保护生态环境,维护生态安全
Protect ecological environment and maintain ecological security
保护生态环境,维护生态安全
Protect ecological environment and maintain ecological security
保护生态环境,维护生态安全
Protect ecological environment and maintain ecological security
保护生态环境,维护生态安全
Protect ecological environment and maintain ecological security
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  • Intraspecific variation in hematological parameters and erythrocyte size among three populations of Batrachuperus tibetanus (Caudata: Hynobiidae)
    作者:Jianli Xiong, Jianping Gou, Guanglu Li, Zhangqiang YouAbstract: Intraspecific variation is a common phenomenon in nature, but to date, research on such variation in hematological traits of urodeles remains scarce. To compare intraspecific variation in hematological traits among populations, and explore whether snout–vent length (SVL) and body mass influence hematological traits, hematolo...
    2023-04-18
  • Initial Carbon Quality of Newly Shed Foliar Litter in an Alpine Forest from Proximate Analysis and 13C NMR Spectroscopy Perspectives
    作者:Jiaping Yang, Junpeng Mu, Yu Zhang, Changkun Fu, Qing Dong, Yulian Yang, Qinggui WuAbstract: The initial carbon (C) quality of plant litter is one of the major factors controlling the litter decomposition rate and regulating C sequestration, but a comprehensive understanding is still lacking. Here, we used proximate analysis and 13C nuclear magnetic resonance (NMR) with spectral editing t...
    2023-04-18
  • Intercropping with Solanum species decreases cadmium uptake and increases phosphorus and potassium uptakes in Amygdalus persica
    作者:Yan Li, Qin Liu, Yuan Liu, Lijin Lin, Xun Wang, Jin WangAbstract: Intercropping with hyperaccumulators can decrease the cadmium (Cd) uptake in nonhyperaccumulators, but there are few studies on fruit trees. To decrease the Cd uptake in fruit trees, three Cd-hyperaccumulator Solanum species (Solanum nigrum var. humile, Solanum americanum, and Solanum photeinocarpum) were intercropped with ...
    2023-04-18
  • Introduced honey bees increase host plant abundance but decrease native bumble bee species richness and abundance
    作者:Ruijun Su, Wenfei Dai, Yulian Yang, Xuelin Wang, Rui Gao, Mengying He, Chuan Zhao, Junpeng MuAbstract: Long-term variation in the population density of introduced honey bees (Apis mellifera) has been shown to be associated with variations in floral traits in alpine lotus (Saussurea nigrescens). However, it remains to be determined whether a high density of honey bees affects the abundance...
    2023-04-18
  • Linkages among the functional traits, insect visitation rate and seed set of Gentiana taxa on the Tibetan Plateau
    作者: Wenfei Dai, RuiGao, Mengying He, YulianYang, Fanglan Li, Junpeng MuAbstract: Maximum plant height (Hmax), stem tissue mass density (SD), leaf mass per area (LMA), and relative growth rate (RGR) have all been linked to flowering phenology. However, it is still unknown whether these functional traits varying with flowering phenology are related to other floral traits associated with pollina...
    2023-04-18
  • Microbial Residue Distribution in Microaggregates Decreases with Stand Age in Subtropical Plantations
    作者: Yanli Jing, Xuechao Zhao, Shengen Liu, Peng Tian, Zhaolin Sun, Longchi Chen, Qingkui WangAbstract: Soil microbial residues contribute to the majority of stable soil organic carbon (SOC) pools, and their distribution among aggregate fractions determines long-term soil carbon (C) stability and, consequently, soil productivity. However, how microbial residue accumulation and distribution res...
    2023-04-18
  • Potential geographic distribution of relict plant Pteroceltis tatarinowii in China under climate change scenarios
    作者: Jingtian Yang, Pan Jiang, Yi Huang, Yulin Yang, Rulin Wang, Yuxia YangAbstract: Pteroceltis tatarinowii (Pteroceltis: Ulmaceae) is a deciduous tree that has a cultivation history of more than 2000 years in China. As an excellent afforestation tree species and rare and endangered tertiary relic plant, P. tatarinowii has high ecological protection value. Due to the forest destruction caused...
    2023-04-18
  • Potential geographical distribution of the endangred plant Isoetes under human activities using MaxEnt and GARP
    作者: Jingtian Yang, Yi Huang, Xue Jiang, Hao Chen, Mei Liu, Rulin WangAbstract: Isoetes L. is a relict genus of Isoetaceae which is of great value to study the systematic evolution of ferns and the flora of East Asia. Due to the impact of human activities on aquatic habitats, the population of Isoetes L. in China is decreasing. In this paper, based on environmental variables including bioclima...
    2023-04-18
  • Predicting the Potential Distribution of the Endangered Plant Magnolia wilsonii Using MaxEnt under Climate Change in China
    作者: JingTian Yang, Xue Jiang, Hao Chen, Pan Jiang, Mei Liu, Yi HuangAbstract: Changes in future climate will have a great impact on biodiversity. Magnolia wilsonii, an endangered tree native to China, has important scientific and medicinal value occurring in western Sichuan, northern Yunnan and western Guizhou. And it has severely declined and become critically endangered in the last years du...
    2023-04-18
  • Prediction of Potential Geographic Distribution of Endangered Relict Tree Species Dipteronia sinensis in China Based on MaxEnt and GIS
    作者: Yi Huang, Yan Zeng, Pan Jiang, Hao Chen, Jingtian YangAbstract: Dipteronia sinensis is an endangered relict tree species in the endemic north temperate flora of China, which has important reference values for studying paleoclimate and species variation as well as geographic zonation changes. Based on 96 occurrence points of D. sinensis and 9 environmental factors, the potential geographic...
    2023-04-18
  • Response of Soil Net Nitrogen Mineralization to a Litter in Three Subalpine Forests
    作者: Li Zhang, Yulian Yang, Zebin Jiao, Zihao Chen, Ya Shen, Yao Liu, Linhui Zhang, Lixia Wang, Sining Liu, Qinggui Wu, Han LiAbstract: Forest litter accumulation can regulate the soil microclimate and alter nutrient distribution, but the effects of litter quality and seasonal differences on soil nitrogen (N) mineralization are still uncertain. The effects of litter change on the rates of net ...
    2023-04-18
  • Seasonal variations in the composition and diversity of gut microbiota in white-lipped deer (Cervus albirostris)
    作者: Zhangqiang You, Jing Deng, Jialin Liu, Junhua Fu, Huan Xiong, Wei Luo, Jianli XiongAbstract: The gut microbiota has key physiological functions in host adaptation, although little is known about the seasonal changes in the composition and diversity of the gut microbiota in deer. In this study, seasonal variations (grassy and withering season) in the gut microbiota of white-lipped deer (Ce...
    2023-04-18
  • Sequencing and Characterization of the Complete Mitochondrial Genome of Tufted Deer, Elaphodus cephalophus (Artiodactyla: Cervidae) and its Phylogenetic Position within the Family Cervidae
    作者: Lichun Jiang, Lan Zhu, Meiqi Li, Xinyue Bao, Zhenkun Zhao, Haifen Qin, Wei ChenAbstract: The tufted deer (Elaphodus cephalophus) is a unique species in the genus Elaphodus. Currently, very little is known about its nuclear and mitochondrial genomes and their phylogenetic position within the family Cervidae. In this study, we have determined the complete sequence of the mitochondrial genom...
    2023-04-18
  • Sexual dimorphism in the mountain dragon, Diploderma micangshanensis (Squamata: Lacertilia: Agamidae) from central China
    作者: Jianli Xiong, Yinlong Bai, Guanglu Li, Zhangqiang YouAbstract: Sexual dimorphism (SD) is a common phenomenon in the animal kingdom, especially in lizards. The mountain dragon (Diploderma micangshanensis) is a Chinese endemic that is widely distributed in montane regions of northern Sichuan, western Hubei Province, southern Gansu, Henan, and Shanxi Provinces. However, little is known about...
    2023-04-18
  • Soil moisture affects plant–pollinator interactions in an annual flowering plant
    作者: Wenfei Dai, Yulian Yang, Harland M. Patch, Christina M. Grozinger, Junpeng MuAbstract: Many environmental factors impact plant and pollinator communities. However, variation in soil moisture and how it mediates the plant–pollinator interactions has yet to be elucidated. We hypothesized that long-term variation in soil moisture can exert a strong selective pressure on the floral and veget...
    2023-04-18
  • A Benzothidiazole-Based Reversible Fluorescent Probe with Excellent Performances in Selectively and Sensitively Sensing of Hg+2 in Water
    作者:BoYu, RuiminYuan, Tianzhi He, Lijuan Liang, KunHuangAbstract: The development of mercury ion selective fluorescent probe is significant because it is one of toxic heavy metals and poses great risks and hazards to human health. Herein, we develop a mercury ion-selective fluorescent probe, namely IB, based on imidazole decorated benzothiadiazole that obtained by a facile palladium catalytic...
    2023-03-22
  • A quinoline-rhodamine hybrid probe for ratiometricly sensing of Hg2+ in water and cell imaging application
    作者:Kun Huang, Yuting Liu, Qi Li, Bo Yu, Lijuan Liang, Dabin QinAbstract: To develop efficient tools for monitoring toxicant Hg2+ in aqueous solution attracts great attention because the abnormal distribution of Hg2+ in environment poses great threat to human health. We here report the preparation of a novel quinoline-rhodamine hybrid fluorescent probe P7RHg for ratiometricly sensing of Hg2+ ...
    2023-03-22
  • Adventitious Shoot Regeneration from Leaf Explants in Sinningia Hybrida ‘Isa’s Murmur’
    作者: Honglin Yang, Yihua Yang, Qiang Wang, Jinyu He, Liyun Liang, Hui Qiu, Yue Wang, Lijuan ZouAbstract: As a valuable ornamental plant, Sinningia hybrida ‘Isa’s Murmur’ (S. hybrida) has genetic flower diversity, which has great potential to develop different flower characters in the horticultural market. The present study focuses on establishing a practical approach for the sustainable pro...
    2023-03-22
  • Application of the gleization soil layer to assess centurial drops in shallow groundwater levels across the southeastern coast of China
    作者:Youlin Luo, Yuehan Dou, Delong Li, Dagang Yuan, Qing Dong, Kai Wang
    2023-03-22
  • Can pollinators track plant expansions A case study on the genetic structure of a host-dependent pollinating wasp
    作者: Yang Yang, Yating Wang, Yan Chen, Rong Wang, Junyin Deng, Xiaoyong ChenAbstract: 1. Plants and their pollinators may respond differently to environmental changes like climate warming. As a consequence, whether the pollinators can successfully track the migration of the plants and rebuild an effective pollinator network are crucial for mutualistic relationships, especially obligate mutuali...
    2023-03-22
  • 年青性染色体及鉴定方法
    作者:楚张卿、罗玮、夏云摘要:性染色体进化及性别决定机制是脊椎动物进化研究的热点,近些年更是提出了性别组学的概念。脊椎动物各类群的性别决定机制呈现出多种形式,尤其是具有年青性染色体系统的类群的演化模式更为多样。由于年青性染色体在核型形态上差异不大,传统的研究方法难以识别,因此本文从细胞遗传学方法、性染色体上的DNA序列/RNA序列及其表达、蛋白质表达等多个维度阐述了年青性染色体和性别决定系统的鉴定方法...
    2023-03-22
  • 增温和植物去除对青藏高原东部高寒灌丛土壤不同形态氮的影响
    作者:刘美、马志良摘要:研究青藏高原东部窄叶鲜卑花(Sibiraea angustata)高寒灌丛土壤不同形态氮含量对增温和植物去除的响应,以理解高寒灌丛土壤氮转化和植物氮素营养过程。结果表明,增温仅在生长季中期和末期使去除植物样方的土壤全氮和有机氮含量显著降低。同时,增温在去除植物样方使生长季末期土壤无机氮含量显著降低16.1%,使生长季初期土壤微生物生物量氮含量显著升高37.7%;在不去除植物样方,增温分别使生长季中...
    2023-03-22
  • A Novel and Efficient In Vitro Organogenesis Approach for Ajuga lupulina Maxim
    作者: Qinggui Wu, Honglin Yang, Yulin Yang, Jinyu He, Erga Aer, Yonghong Ma, Lijuan ZouAbstract: This work was aimed at establishing an effective approach for in vitro propagation of Ajuga lupulina Maxim, a medicinal and ornamental plant mainly found in eastern Xizang, in the western Sichuan region of China. We report an optimum response in the proliferation of axillary shoots from nodal segmen...
    2023-03-21
  • A Xanthene Dye‐based Sensor for Viscosity and Cell Imaging
    作者: Bo Yu, Ying Zhou, Lihua Dou, Yunyun Li, Zhengwen HuangAbstract: A new xanthene dye, namely ImX, has been facilely prepared by reaction of 4-(1H-Imidazol-1-yl)benzaldehyde with N, N-diethyl-3-aminophenol in concentrated propionic acid, and then treated by p-chloranil. ImX presents the maximum absorption and emission band centered at 562 nm and 583 nm in water, respectively. Fluorescent spe...
    2023-03-21
  • Blood cells and hematological parameters of the mountain dragon, Diploderma micangshanensis (Squamata: Lacertilia: Agamidae)
    作者: Yinlong Bai, Guanglu Li, Shuaichao Lin, Jianli XiongAbstract: Hematological characteristics reflect the health status of animals and their physiological adaptation to the environment. However, few studies focused on the species of Diploderma. In this study, the blood cells and the hematological parameters of Diploderma micangshanensis, a species endemic to China, were examined based on 48...
    2023-03-21
  • De novo transcriptome analysis provides insights into the salt tolerance of Podocarpus macrophyllus under salinity stress
    作者: Lijuan Zou, Taotao Li, Bingbing Li, Jing He, Chunli Liao, Lianzhe Wang, Shouyu Xue, Tao Sun, Xuan Ma, Qinggui WuAbstract: Background: Soil salinization is causing ecosystem degradation and crop yield reduction worldwide, and elucidation of the mechanism of salt-tolerant plants to improve crop yield is highly significant. Podocarpus macrophyllus is an ancient gymnosperm species with a uniq...
    2023-03-21
  • Decreased Soil Organic Carbon under Litter Input in Three Subalpine Forests
    作者: Zihao Chen, Ya Shen, Bo Tan, Han Li, Chengming You, Zhenfeng Xu, Xinyu Wei, Xiangyin Ni, Yulian Yang , Li ZhangAbstract: Soil organic carbon (SOC) is the largest terrestrial organic carbon pool. Plant litter is an important source of SOC, but the knowledge gap between SOC fractions and plant litter input remains inconsistent. Here, a litter input control experiment was conducted at three ...
    2023-03-21
  • Dual effects of insect fecundity overdispersion on the Wolbachia establishment and the implications for epidemic biocontrol
    作者: Xin Tong, Stephen G. Compton, Jing Jiao, Yan Chen, Yuanyuan Ding, Rong Wang, Xiaoyong ChenAbstract: The utilization of the most prevalent endosymbionts Wolbachia spp. to tackle insect-borne viral diseases is growing rapidly. Understanding how and how often Wolbachia establish in a local population is fundamental to replacement releases but remains unclear. Previous models make the predict...
    2023-03-21
  • Fighting the enemy: How rice survives the blast pathogen’s attack
    作者: Junjie Yin, Lijuan Zou, Xiaobo Zhu, Yuyan Cao, Min He, Xuewei ChenAbstract: Global food security is threatened by rice blast disease caused by the filamentous fungus Magnaporthe oryzae. An understanding of rice resistance mechanisms is fundamental to developing strategies for disease control. In this review, we summarize recent advances in pathogen-associated molecular patterntriggered im...
    2023-03-21
  • In Vitro Propagation via Organogenesis and Formation of Globular Bodies of Salvia Plebeia: A Valuable Medicinal Plant
    作者: Qinggui Wu, Honglin Yang, Yuxi Sun, Jinyao Hu, Lijuan ZouAbstract: Background: As a highly valued medicinal plant, Salvia plebeia R. Brown belongs to the Lamiaceae family that has been subjected to over exploitation in its natural habitat for phytochemical and pharmacological studies. Alternative collection methods need to be developed for the large-scale propagation of Salvia plebeian.Re...
    2023-03-21
  • Molecular mechanisms of mutualistic and antagonistic interactions in a plant-pollinator association
    作者: Rong Wang , Yang Yang, Yi Jing, Simon T. Segar , Yu Zhang, Gang Wang , Jin Chen, Qingfeng Liu, Shan Chen, Yan Chen, Astrid Cruaud , Yuanyuan Ding, Derek W. Dunn, Qiang Gao, Philip M. Gilmartin, Kai Jiang, Finn Kjellberg , Hongqing Li, Yuanyuan Li, Jianquan Liu, Min Liu, Carlos A. Machado, Ray Ming , Jean-Yves Rasplus, Xin Tong, Ping Wen, Huanming Yang, Jingjun Yang, Ye Yin, Xingtan ...
    2023-03-21
  • Non-additive effects of nitrogen and phosphorus fertilization on microbial biomass and residue distribution in a subtropical plantation
    作者: Yanli Jing, Xueli Ding, Xuechao Zhao, Peng Tian, Fuming Xiao, Qingkui WangAbstract: High nitrogen (N) and phosphorus (P) availability has significant influence on microbial-driven soil carbon (C) sequestration. Microbial residues are a significant contributor of soil stable C pool, their distribution among aggregate fractions determines long-term soil C stability. However, very little is ...
    2023-03-21
  • Nutrient effects on aquatic litter decomposition of free-floating plants are species dependent
    作者: Yaobin Song, Mengyao Zhou, Yulu Qin, Johannes H.C. Cornelissen, Ming DongAbstract: Among the most important ecosystem processes in wetlands is plant litter decomposition, which provides the detrital food chains with matter and energy and consequently could affect ecosystem health and integrity. Varying degrees of anthropogenic eutrophication mostly due to urbanization, are prevalent probl...
    2023-03-21
  • Physiological Responses of Agriophyllum Squarrosum and Setaria Viridis to Drought and Re-watering
    作者: Juanli Chen, Xueyong Zhao, Yuqiang Li, Yongqing Luo, Yaqiu Zhang, Mei Liu, Yan LiAbstract: The drought resistance of psammophytes determines their survival and growth under natural conditions or after transplanting. However, their responses to drought are not well understood. Agriophyllum squarrosum is a pioneer psammophyte in Horqin sandy land’s vegetation community, and Setaria viridis...
    2023-03-21
  • Plant–soil feedback effects on the performance and functional traits of Dodonaea viscosa in a dry-hot valley, China
    作者: Xuemei Wang, Bangguo Yan, Liangtao Shi, Gangcai LiuAbstract: Plant–soil feedback has been widely studied and may be particularly important in resource-poor areas. However, the roles of direct and indirect biotic effect in affecting plant growth and functional traits in this process still remained unclear. The aim of this study was to explore the roles of soil biota in affecting plant per...
    2023-03-21
  • Potential distribution of the extremely endangered species Ostrya rehderiana (Betulaceae) in China under future climate change
    作者: Shuangli Tang, Yaobin Song, Bo Zeng, Ming DongAbstract: Global climate change is a major threat to biodiversity, which may increase the extinction risk of rare species, particularly those like Ostrya rehderiana Chun (Betulaceae) with very few remaining extant wild individuals. We aimed to estimate the potential distribution of O. rehderiana under climate change and to analyze possible rel...
    2023-03-21
  • Pretreatment with Danshensu Promotes Germination of Cucumber (Cucumis sativus L.) Seeds by Regulating ReactiveOxygen Species and Endogenous Phytohormones
    作者: Lijun Zhu, Xiaoju Feng, Qiuyu Mou, Baoguo DuAbstract: Danshensu (DSS), the aqueous extracts of Salvia miltiorrhiza has been widely used in biomedical science due to its outstanding capacity in ROS scavenger. However, studies regarding its effects on plant physiology are still scare. In the present study, cucumber seeds were soaked in different concentrations of DSS solution for 24 h befor...
    2023-03-21
  • Relationship between diameter at breast height and tree age in populations of a rare and endangered plant, Davidia involucrata
    作者: Ruijun Su, Qinggui Wu, Yulian Yang, Tingxing HuAbstract: The growth rate of the diameter of trees is significantly correlated with their age; therefore, a growth model can be established to predict the dynamics of the population. To reveal the relationship between individual age and diameters at breast height (DBH) of D. involucrata,five populations were chosen in the largest distribution...
    2023-03-21
  • Responses to Drought Stress in Germinating Seeds of Agriophyllum Squarrosum (L.) And Setaria viridis (L.)
    作者: Juanli Chen, Xueyong Zhao, Yaqiu Zhang, Yongqing Luo, Zhaoquan He, Rui Zhang, Hailun Yu, Runxia ZhangAbstract: To understand how germinating psammophyte seeds adapt to drought stress in China's Horqin Sandy Land, we examined how the seedling growth and physiological properties of Agriophyllum squarrosum (L.) and Setaria viridis (L.) respond to drought. Results showed that Agriophyllum squ...
    2023-03-21
  • Seed bank characteristics of a rare and endangered plant, Davidia involucrate
    作者: Ruijun Su, Tingxing HuAbstract: Objectives: Research of soil seed bank pays close attention to regeneration of plant populations to better predict the direction of population regeneration after environmental changes. At the same time, existence of canopy seed bank is an important reproductive strategy for plants to deal with unfavorable environments.Methods: This paper studies characteris...
    2023-03-21
  • Soil microbial respiration in forest ecosystems along a north-south transect of eastern China: Evidence from laboratory experiments
    作者: Peng Tian, Xuechao Zhao, Shengen Liu, Zhaolin Sun, Yanli Jing, Qingkui WangAbstract: Soil microbial respiration (MR) is a key process controlling the soil-atmosphere CO2 flux, and is widely studied at individual sites. Yet its spatial variation and underlying mechanism at larger spatial scales are still poorly understood,limiting our estimates of the carbon cycle in terrestrial ecosystems...
    2023-03-21
  • Spatiotemporal evolution and influencing factors of land use in Tibetan region: 1995–2025
    作者: Li chen, Qing wangAbstract: Constant alterations of landscape pattern, triggered by specific natural and human driving forces, have aroused some heated discussions in the field of regional environmental change research especially in mountainous settlements. To explore changes in land use from the microcosmic scale of mountainous settlements enables a clearer, more direct reflection on the...
    2023-03-21
  • The complete chloroplast genome of Ottelia acuminate var. crispa, an endangered aquatic herb with extremely narrow distribution
    作者: Chaoyong Tu, Hao Lin, Qiang Wang, Lijun Wu, Yulian Yang, Lijuan Zou , Qinggui Wu Abstract: Ottelia acuminate var. crispa is an endangered aquatic herb with extremely narrow distribution. In this study, we assembled the chloroplast genome of this species based on the second-generation high-throughput sequencing. The genome is 157,783bp in length with a typical quadripartite structure inclu...
    2023-03-21
  • The complete chloroplast genome sequence of Davidia involucrata
    作者: Ang Li, Zhe HouAbstract: Davidia involucrata Baill. is a kind of tertiary paleotropical plant floristic relic species unique to China. This rare plant is disappearing due to poor adaptability and serious poaching. Davidia involucrata has been listed as a national first-level protected wild plant, a unique genus plant unique to China, a relic plant, and a well-known ornamental plant in the...
    2023-03-21
  • Warming increases soil carbon input in a Sibiraea angustata-dominated alpine shrub ecosystem
    作者: Mei Liu, Jiahao Wen, Yamei Chen, Wenjuan Xu, Qiong Wang, Zhiliang MaAbstract: Plant-derived carbon (C) inputs via foliar litter, root litter and root exudates are key drivers of soil organic C stocks. However, the responses of these three input pathways to climate warming have rarely been studied in alpine shrublands. By employing a 3-year warming experiment (increased by 1.3℃), we inves...
    2023-03-21
  • Watershed landscape ecological risk assessment and landscape pattern optimization: Take Fujiang River Basin as an example
    作者: Xuemao Zhang, Huaming Du, Ying Wang, Yan Chen, Li Ma , Tingxu DongAbstract: Landscape pattern optimization is an effective method to reduce the landscape ecological risks and construct ecological security pattern. Ten factors from three dimensions (nature, social, landscape pattern)were selected to construct the landscape ecological risk evaluation index system, and spatial principal comp...
    2023-03-21
  • 柏木人工林林窗位置对香椿细根分解及土壤真菌群落多样性的影响
    作者:李德会、李相君、吴庆贵、尹海峰、李贤伟摘要:为了解林窗位置对香椿细根分解及土壤真菌群落多样性的影响,以川中丘陵区30a生柏木人工林为研究对象,采用Illumina Miseq高通量测序技术研究200m²人工林窗中心位置(GC)、边缘位置(GB)、郁闭林(CC)对香椿细根2a自然分解后土壤真菌群落结构及多样性的影响。结果表明,林窗内不同位置之间微环境差异显著(P<0.05),土壤理化性质对林窗位置变化的响应较细根养分元素更积...
    2023-03-21
  • “川九路”裸地斑块的成因及防护措施评价
    作者:徐亮、杨洪、刘美、潘倩、袁川、谢奇言、邬锐、周登杰、陈艳摘要:“川九路”为我国首条生态环保示范公路,在我国山区公路的建设和保护中起着示范和引领作用;“8·8”九寨沟地震导致公路沿线不良地质发育,次生灾害频发,公路破坏严重。“川九路”修复新示范工程被列为灾后“基础设置和公共服务重建”的重要项目。为监测和评价“川九路”灾后重建的成效,本文通过遥感影像解译确定公路两侧裸地斑块,并对裸地斑块进行实地...
    2023-03-21
  • 地果花粉供应格局成因和适生区分析
    作者:袁川、谭露、徐亮、童鑫、游章强、陈艳摘要:被子植物的性别表达与分配具有环境依赖性,使其性器官和雌雄功能在不同环境中趋于合理。地果雄果的花药胚珠比在不同地域间存在极大的变幅,同时呈现出不同的雄花分布格局,苞片口型(OS型)的花药胚珠比显著低于果腔散布型(SS型)。基于地果的339个实际分布点,使用最大熵模型模拟不同雄花分布类型地果的适生区,并对各适生区的环境贡献因子、区域间扩散的环境限制因子进行分...
    2023-03-21
  • 涪江流域土地利用变化及其驱动力分析
    作者:杜华明摘要:为了掌握涪江流域土地利用格局变化及其驱动机制,本文采用空间主成分分析法、土地利用转移矩阵等方法,对涪江流域200l-2018年土地利用状况进行了研究,结果显示:(1)2001-2018年涪江流域土地利用总体格局以耕地和林地为主,占比约93%,草地、水域、耕地、建设用地和其他用地的占比均较小;(2)2001-2018年,涪江流域耕地、草地、建设用地、水域面积分别增加3611.12、90.03、251.54、221.45 km²,而林地、...
    2023-03-21
  • 基于景观生态风险评价的涪江流域景观格局优化
    作者:张雪茂、董廷旭、杜华明、廖传露、王飞摘要:以流域为尺度进行景观生态风险评价以及景观格局优化,有利于为流域生态系统服务的提高和人类活动管控提供科学依据。以涪江流域为研究区域、从“自然-社会-景观格局”3个维度选取10个评价因子建立评价指标体系,采取空间主成分分析法(SPCA)对流域景观生态风险进行综合评价,再基于生态风险评价的结果和生态源地利用最小累积阻力模型(MCR)和网络分析等方法实现流域景观格局...
    2023-03-21
  • 九寨沟县四川羚牛生境适宜性评价
    作者:陈星、朱必清、金贵祥、冷志成、古晓东、官天培摘要:掌握物种栖息地空间分布格局及其环境影响因子,是开展物种保护及栖息地管理的基础。据近5年的红外相机位点和样线调查记录,利用MaxEnt模型,首次对九寨沟县四川羚牛栖息地的适宜性进行了分析评价。结果表明:1)气候、地形、植被和干扰因子均对九寨沟县四川羚牛栖息地适宜性产生了不同程度的影响,四川羚牛的最适宜栖息地的特征为季节性降水约75.5~78.6 mm、海拔约为2...
    2023-03-21
  • 空气污染对信鸽比赛个体归巢速度的影响
    作者:于丛、游章强、万月、李忠秋摘要:空气污染作为一种有害的环境因素,对人类及动物的生理、心理均有影响。在鸟类中,信鸽(Columba livia)是研究空气污染影响的理想模型。为探究空气污染的行为学效应,通过收集并筛选2018和2019年成都市信鸽协会春秋两个季节举办的64场赛事共285羽参赛5场及以上的信鸽不同空距等级下的归巢速度,利用混合线性模型分析了6种大气污染物(CO、NO2、O3、PM2.5、PM10、SO2)及气温、季节、天气...
    2023-03-21
  • 模拟增温对青藏高原东部高寒灌丛土壤氮转化的影响
    作者:刘美、马志良摘要:本文研究了青藏高原东部窄叶鲜卑花高寒灌丛生长季前期、生长季后期和非生长季3个生育期的土壤氮转化速率对模拟增温的响应,分析全球气候变暖对高寒灌丛土壤氮循环过程的影响。结果表明:模拟增温使高寒灌丛土壤温度显著升高1.2℃,土壤水分显著降低2.5%。高寒灌丛生长季土壤净氯矿化(氨化和硝化)速率显著高于非生长季,但土壤净氮固持速率显著低于非生长季。土壤氮矿化在生长季前期以硝化作用为主,...
    2023-03-21
  • 气候和土地利用变化下黄河流域农业干旱时空演变及驱动机制
    作者:黎云云、畅建霞、樊晶晶、余波摘要:为全面剖析气候和土地利用变化下黄河流域农业干旱时空演变特征及驱动机制,该研究首先构建黄河流域SWAT分布式水文模型,模拟黄河流域水循环过程,基于标准化土壤湿度指数(Standard Soil Moisture Index,SSMI),识别不同干旱等级下的农业干旱历时、强度及干旱事件,分析黄河流域不同分区农业干旱特征值以及干旱事件频率在年季尺度上的演变特征;在此基础上,通过SWAT模型驱动农业干...
    2023-03-21
  • 青藏高原东部典型林灌交错带地被物和土壤持水量数据集
    作者:刘美、马志良摘要:森林地被物层(枯落物和苔藓)和土壤对森林生态系统水源涵养和水文调节等服务功能的发挥起着关键性作用。位于青藏高原东部的岷江源头区森林水源涵养功能变化对整个岷江流域,乃至长江上游的生态环境建设与水资源安全保障都有重要意义。通过野外调查和室内分析实验,本数据集整合了岷江源头区一个典型的针叶林—灌丛交错带地被物储量、最大持水量以及0—20cm土壤容重、最大持水量、毛管持水量数据。本数...
    2023-03-21
  • 王朗国家级自然保护区岩羊集群结构及季节变化
    作者:刘明星、陈星、侯星羽、黎运喜、蒋文龙、杨孔、李晟、官天培摘要:岩羊(Pseudois nayaur)是青藏高原常见的食草动物,但对边缘分布区的种群了解较少。2018年6月到2019年8月,我们利用红外相机在四川王朗国家级自然保护区对岩羊的集群结构、特征及其季节变化进行了描述与分析。结果显示:调查共记录到岩羊1921群次,共计6623只次。按照性别和年龄组,可将岩羊集群划分为混合群、母仔群、雄性群、独雄、独雌、雌性群。研究...
    2023-03-21
  • 西藏色林错国家级自然保护区鸟类区系和多样性
    作者:唐敏、廖家红、覃海芬、赵振坤、钱前、杨凯霖、陈红州、毛世平、谢坤军、陈哲宇、陈伟摘要:为了解高海拔地区西藏色林错国家级自然保护区的鸟类区系及其多样性,2019年8月至2020年7月,采用样点法、样线法和文献查阅法,对该保护区的鸟类进行了调查。结果表明:该区域共有鸟类14目30科101种。在分类组成上,雀形目Passerines鸟类最多(10科41种),其次为鸻形目Charadriiformes鸟类(5科14种);鹈形目Pelletiformes、沙...
    2023-03-21
  • 西秦岭地区景观生态风险评价及格局优化研究
    作者:杜华明摘要:以西秦岭地区景观生态风险评价为出发点,基于土地利用数据类型、DEM数据、道路、城镇用地、居民点、河流等数据资料,运用ArcGIS空间分析技术,采用空间主成分分析法、加权叠加分析,获得西秦岭地区景观生态风险空间分布格局图,并利用最小累积阻力模型构建生态廊道以优化该区域生态网络结构。结果表明,西秦岭地区生态环境整体状况偏差,低、较低、中、较高、高生态风险区的占比分别为11.57%、19.11%、22.44%...
    2023-03-21
  • 有机添加剂柠檬酸与乙二胺四乙酸吸附在Mg(0001)表面的计算模拟研究
    作者:王群、林小龙、孙静、肖蔺娟、彭思杰、阿力莫子牛、魏荣伯、孙玉希摘要:镁及镁合金具有良好的生物降解性,生物相容性和优异的力学相容性,作为新一代理想的可降解医用金属材料具有巨大的潜力,但植入人体后,极易腐蚀和降解。本工作用密度泛函理论计算模拟方法研究了有机添加剂柠檬酸与乙二胺四乙酸在Mg(0001)表面的吸附,通过吸附能,分态密度,差分电荷密度及布居电荷分析发现柠檬酸与乙二胺四乙酸在Mg(0001)表面...
    2023-03-21
  • 元宝草高频植株再生体系的建立
    作者:杨鸿淋、何金玉、张欣钰、候英英、吉能么友喝、邹利娟摘要:以元宝草(Hypericum sampsonii)无菌苗顶芽和茎段为实验材料,以MS为基本培养基,研究不同植物生长调节物质种类及浓度对愈伤组织诱导、丛生芽发生及植株再生的影响。结果表明:顶芽通过间接器官发生途径,在MS+0.3mg·L-1IAA+2.0mg·L-1TDZ中,15d左右诱导出再生能力极强的愈伤组织,诱导率100%;30d后愈伤组织在此培养基上分化出绿色丛生芽,平均每个外植体形成...
    2023-03-21
  • 中国鹿属动物近30年研究现状的文献计量分析
    作者:刘家林、熊欢、罗华林、游章强摘要:为了解中国鹿属动物的研究现状,本文以中国鹿属动物及其拉丁学名为关键词,在CNKI和WOS检索出1990-2021年三十年间关于中国鹿属动物研究的中英文学术论文1130篇。经筛选后,用于本研究计量分析的学术论文886篇,使用VOS viewer对中国现有鹿属动物研究成果发表时间、作者及所在单位、研究主题和载文期刊进行了可视分析。结果表明:中国鹿属动物的研究自1990年以来发文数量分别于2004年和...
    2023-03-21
  • A Fluoran-Based Cu 2+-Selective Fluorescent Probe and its Application in Cell Imaging
    作者: Qi Qiu, Bo Yu, Kun Huang, Dabin Qin Abstract: Based on a fluoran skeleton, we herein reported a new fluorescent probe FLACu for Cu2+ by facile modification of the spirolactone of dye 1 with phenylhydrazine. Taking advantage of the spirolactam moiety, FLACu only delivers a specific “off-on” fluorescence signal output towards Cu2+ when treated with various metal ions, which has been well ...
    2023-03-20
  • Altitudinal pattern of shrub biomass allocation in Southwest China
    作者: Mei Liu, Dandan Li, Jun Hu, Dongyan Liu, Zhiliang Ma, Xinying Cheng, Chunzhang Zhao, Qing Liu Abstract: Shrubs play an important role in the global carbon cycle and are particularly sensitive to climate change. However, the altitudinal pattern of biomass allocation in mountainous shrubs and its responses to climate change are still unclear. In this study, biomass accumulation and allocati...
    2023-03-20
  • Assessment of effective conservation of the Sichuan takin by giant panda reserves through functional zoning
    作者: Haiyang Gao, Tianpei Guan, Di Zhu, Wenwen Li, Fangyi Zhou, Ding Zhao, Changlin Li , Li Zhang Abstract: The flagship species conservation strategy is widely practiced in nature reserves. However, few studies have quantitatively explored whether the current functional zoning adequately conserves the habitats of other species. To examine this problem, we selected the Tangjiahe, Xuebaoding, a...
    2023-03-20
  • Association of leaf silicon content with chronic wind exposure across and within herbaceous plant species
    作者: Yaobin Song, Yukun Hu, Xu Pan, Guofang Liu, Wei Xiong, Ming Dong, Johannes H. C. Cornelissen Abstract: Aim: High foliar silicon (henceforth Si) concentration protects plant tissues against herbivory, but protection against several abiotic stressors has also been proposed, although the adaptive significance of these functions is still being debated. We aimed to explore the potential relati...
    2023-03-20
  • Brassinosteroids regulate root meristem development by mediating BIN2-UPB1 module in Arabidopsis
    作者: Taotao Li, Wei Lei, Ruiyuan He, Xiaoya Tang, Jifu Han, Lijuan Zou, Yanhai Yin, Honghui Lin, Dawei ZhangAbstract: Plant steroid hormones brassinosteroids (BRs) regulate plant growth and development at many levels. While negative regulatory factors that inhibit development and are counteracted by BRs exist in the root meristem, these factors have not been characterized. The functions of UPB...
    2023-03-20
  • Characteristics of the mitochondrial genome of Rana omeimontis and related species in Ranidae Gene rearrangements and phylogenetic relationships
    作者: Lichun Jiang, Min Zhang, Lu Deng, Zhongwen Xu, Hongyan Shi, Xiaodong Jia, Zhenli Lai, Qiping Ruan, Wei Chen Abstract: The Omei wood frog (Rana omeimontis), endemic to central China, belongs to the family Ranidae. In this study, we achieved detail knowledge about the mitogenome of the species. The length of the genome is 20,120 bp, including 13 protein-coding genes (PCGs), 22 tRNA genes, t...
    2023-03-20
  • Characterization of complete mitochondrial genome of Hylarana guentheri (Anura: Ranidae) and its phylogenetic implication
    作者: Lichun Jiang, Bingxiu Wu, Jing Luo, Zhongwen Xu, Nenghao HuangAbstract: The Gunther's frog (Hylarana guentheri) belongs to a member of the family Ranidae. We provide a complete mitogenome of H. guentheri and examine its phylogenetic position with other related species. Its mitogenome is a closed circular molecule 18,698 bp in length including 13 protein coding genes, 22 tRNA coding genes,...
    2023-03-20
  • Characterization of the complete mitochondrial genome of the paddy frog Fejervarya multistriata (Anura Dicroglossidae) and its phylogeny 期刊:Mitochondrial DNA Part B
    作者: Lichun Jiang, Guihua Lv, Lei Liu, Bingxiu Wu, Zhongwen Xu, Yu LiAbstract: The mitochondrial genome has proven to be a highly successful resource for the investigation of evolution and population genetics. Here, we present the complete mitochondrial genome of Fejervarya multistriata. The circle genome was found to be 17,759bp in length, containing 13 protein-coding genes, 23 transfer RNA g...
    2023-03-20
  • Characterization of the complete mitogenome of the Hongyuan Yak Bos grunniens (Artiodactyla Bovidae) and its phylogenetic analysis
    作者: Lichun Jiang, Xia Zhu, Jing He, Ximin Fu, Xiwen Chen, Bingxiu Wu, Tian Sun, Jing Luo Abstract: The Hongyuan breed Yak (Bos grunniens) belongs to a member of t the subfamily Bovinae. We provide a complete mitogenome of B. grunniens and analyze its phylogenetic relationship with other related species. Its mitogenome is a circular molecule with 16,322bp in size, including 13 protein coding g...
    2023-03-20
  • Differential effects of N addition on the stoichiometry of microbes and extracellular enzymes in the rhizosphere and bulk soils of an alpine shrubland
    作者: Xiaomin Zhu, Mei Liu, Yongping Kou, Dongyan Liu, Qing Liu, Ziliang Zhang, Zheng Jiang, Huajun YinAbstract: Background and aims While large differences inmicrobial biomass and extracellular enzyme activities (EEAs) between rhizosphere and bulk soils have been demonstrated, the potentially different response of microbes and their EEAs in rhizosphere and bulk soils to nitrogen (N) deposition...
    2023-03-20
  • Conservation implications of fine scale population genetic structure of Ficus species in South African forests
    作者: Junyin Deng, Simon van Noort, Stephen G. Compton, Yan Chen, Jaco M. Greeff
    2023-03-20
  • Differential impacts of nitrogen addition on rhizosphere and bulk-soil carbon sequestration in an alpine shrubland
    作者: Xiaomin Zhu, Ziliang Zhang, Dongyan Liu, Yongping Kou, Qian Zheng, Mei Liu, Juan Xiao, Qing Liu, Huajun YinAbstract: 1. Due to complex root–soil interactions, the responses of carbon (C) dynamics in the rhizosphere to elevated nitrogen (N) deposition may be different from those in bulk soil. However, the potentially different response of C dynamics in the rhizosphere and bulk soils and t...
    2023-03-20
  • Drought differently affects growth properties, leaf ultrastructure, nitrogen absorption and metabolism of two dominant species of Hippophae in Tibet Plateau
    作者: Juan Chen, Yudong Li, Yan Luo, Weiguo Tu, Ting Wan Abstract: Hippophae has been exploited as food, medicine as well as pioneer species for fixing nitrogen (N) and preventing desertification in Tibetan Plateau. In the paper, the eco-physiological responses and adaptive abilities of Hippophae rhamnoides and Hippophae thibetana seedlings under two levels of drought (50% and 30% field capacit...
    2023-03-20
  • Ecophysiological responses of two poplar species to intraspecific and interspecific competition under different nitrogen levels
    作者: Yan Li, Jieyu Kang, Zhijun Li, Helena Korpelainen, Chunyang Li Abstract: Aims Populus deltoides and P. euramericana are widely used in China as major forestry species. At present, little is known about their responses to nitrogen (N) deficiency when grown in monocultures or mixed plantations. The aim of this investigation was to analyze the growth, and morphological and physiological resp...
    2023-03-20
  • Effects of Litterfall on the Accumulation of Extracted Soil Humic Substances in Subalpine Forests
    作者: Xinyu Wei, Yulian Yang, Ya Shen, Zihao Chen, Yuliang Dong, Fuzhong Wu, Li ZhangAbstract: Plant litter is one of the main sources of soil humus, but which can also promote primary humus degradation by increasing microbial activity due to the higher availability of energy released, resulting in a confusing relationship between litterfall and soil humus. Therefore, an in situ incubation expe...
    2023-03-20
  • Effects of temperature on growth and development of amphibian larvae across an altitudinal gradient in the Tibetan Plateau
    作者: Liqing Peng, Min Tang, Jiahong Liao, Shiyuan Liang, Litao Gan, Kejun Hua, Yan Chen, Hong Li, Wei Chen, Juha MeriläAbstract: Organisms living in extreme environments, such as amphibians inhabiting the Tibetan plateau, are faced with a magnitude of potentially strong selection pressures. With an average elevation exceeding 4500 m, the Tibetan plateau is mainly characterized by low temperatu...
    2023-03-20
  • Elevated temperature and CO2 interactively modulate sexual competition and ecophysiological responses of dioecious Populus cathayana
    作者: Juan Chen, Quan Liu, Lei Yu, Helena Korpelainen, Ülo Niinemets, Chunyang Li
    2023-03-20
  • First record of disk-footed bat Eudiscopus denticulus (Chiroptera, Vespertilionidae) from China and resolution of phylogenetic position of the genus
    作者: Wenhua Yu, Gabor Csorba, Zhenglanyi Huang,Yannan Li, Shuo Liu, Ruichang Quan, Qiaoyan Wang, Hongyan Shi, Yi Wu, Song LiAbstract: The disk-footed bat Eudiscopus denticulus(Osgood, 1932) is a rare species in Southeast Asia. During two chiropteran surveys in the summer of 1981 and 2019, eight and three small Myotis-like bats with distinct disk-like hindfeet were collected from Yunnan Provinc...
    2023-03-20
  • Impacts of a biocontrol agent on invasive Ageratina adenophora in Southwest China: Friend or foe?
    作者: Chuan Yuan, Qin Wang, Yan Chen, Lidan Zhang, Lu Tan, Ronghua Fu, Jingtian Yang, Yan Li, Mei Liu, Stephen G. ComptonAbstract: Classical biological control of invasive plants depends on the introduction of host-specific natural enemies. Many natural enemies have provided successful control, but the impacts of herbivorous insects on their hosts are highly variable and context dependent. Unde...
    2023-03-20
  • Mitogenome, gene rearrangement and phylogeny of Dicroglossidae revisited
    作者: Lichun Jiang, Guihua Lv, Xiaodong Jia, Qiping Ruan, Wei ChenAbstract: The paddy frog (Fejervarya multistriata) belonging to the family Dicroglossidae, is a species widely distributed in temperate and tropical Asia. In this study, the complete mitochondrial genome of F. multistriata was sequenced. The mitogenome was 17 677 bp in size, consisting of 13 protein-coding genes (PCGs), 23 transf...
    2023-03-20
  • Nitrogen and phosphorus translocation of forest floor mosses as affected by a pulse of these nutrients
    作者: Xin Liu, Zhe Wang, Xiaoming Li, Weikai BaoAbstract: Aims Mosses are dominant in many ecosystems where nutrients from deposition are one of the main nutrient sources. However, it is difficult to evaluate mosses’ role in nutrient cycling without knowledge of how mosses use deposited nutrient inputs. To fill this gap, the present study aims to investigate: (i) how nitrogen (N) and phosphoru...
    2023-03-20
  • No Male Preference for Large Females in the Asian Common Toad (Duttaphrynus melanostictus): Effect of the Sex Ratio and Breeding System
    作者: Lixia Zhang, Xiangyu Yuan, Yongsun Sheng, Xueting Zhong, Jiahong Liao, Zhenhao Liu, Wei ChenAbstract: Mating preferences are common in natural populations of animals. Numerous studies have shown that male mate choice can occur in a wide range of taxa. However, male mating preferences are still poorly understood in anurans. Sexual selection theory predicts that male mate choice is not expe...
    2023-03-20
  • Organogenesis and high-frequency plant regeneration in Caryopteris terniflora Maxim. using thidiazuron
    作者: Qinggui Wu, Honglin Yang,Yuxi Sun, Jinyao Hu, Lijuan ZouAbstract: In vitro culture is employed as a means of producing plant materials from medicinal plants to meet the increasing demands of the market. Herein, we focused on an efficient protocol for organogenesis through two pathways in six explant types from Caryopteris terniflora Maxim (C. terniflora), a medicinal and ornamental plant....
    2023-03-20
  • Phylogeographic analyses of poplar revealed potential glacial refugia and allopatric divergence in southwest China
    作者: Ang Li, Zhe HouAbstract: The distribution pattern and genetic structure of plant species have been profoundly influenced by climate oscillations. Phylogeographic analyses have been numerously conducted in biodiversity hotspot regions and some general conclusions have been documented. However, other regions have received less attentions and these places may serve as potential glacial refug...
    2023-03-20
  • Phytochrome-interacting factor 4 (PIF4) inhibits expression of SHORT HYPOCOTYL 2 (SHY2) to promote hypocotyl growth during shade avoidance in Arabidopsis
    作者: Taotao Li, Bingbing Li, Lianzhe Wang, Zhaohui Xie, Xiaotao Wang, Lijuan Zou, Dawei Zhang, Honghui LinAbstract: Plants sense the presence of competing neighboring vegetation as a change in light quality. These changes initiate shade avoidance syndrome (SAS) responses. PHYTOCHROME INTERACTING FACTORS (PIFs) are crucial factors in the SAS response. In particular, they mediate the expression ...
    2023-03-20
  • Pollen Protein: Lipid Macronutrient Ratios May Guide Broad Patterns of Bee Species Floral Preferences
    作者: Anthony D. Vaudo, John F. Tooker, Harland M. Patch, David J. Biddinger, Michael Coccia, Makaylee K. Crone, Mark Fiely, Jacob S. Francis, Heather M. Hines, Mackenzie Hodges, Stephanie W. Jackson, Denis Michez, Junpeng Mu, Laura Russo, Maliheh Safari, Erin D. Treanore, Maryse Vanderplanck, Eric Yip, Anne S. Leonard, Christina M. Grozinger Abstract: Pollinator nutritional ecology provides in...
    2023-03-20
  • Potential effects of climate change on the distribution of invasive bullfrogs Lithobates catesbeianus in China
    作者: Liqing Peng, Min Tang, Jiahong Liao, Haifen Qing, Zhenkun Zhao, David A. Pike, Wei ChenAbstract: Climate plays important roles in determining the geographical distribution of species, including the invasion area of alien species. Little is known, however, about the influence of climate change on the distribution area of invasive amphibian species in China. We adopted a maximum entropy mod...
    2023-03-20
  • Proximate mechanisms responsible for random mating by size in the Himalayan toad Duttaphrynus himalayanus
    作者: Lixia Zhang, Yongsun Sheng, Xiangyu Yuan, Fei Yu, Xueting Zhong, Jiahong Liao, Zhenhao Liu, Wei ChenAbstract: Exploring the mechanisms that affect mating pattern with respect to body size has implications for understanding the evolution of sexual selection. Theory predicts that the absence of a relationship between female body size and fecundity, unbiased operational sex ratio, and a shor...
    2023-03-20
  • Sexual Shape Dimorphism in the StreamDwelling Salamander Batrachuperus pinchonii (Caudata: Hynobiidae)
    作者: Jianli Xiong, Yong Huang, Hongtao Ren, Xiaochan Gao, Zhangqiang YouAbstract: Sexual dimorphism is a widespread phenomenon throughout the animal kingdom and has attracted considerable interest in evolutionary biology. Studies on sexual dimorphism in hynobiid salamanders, which exhibit external fertilization and have two different habitat preferences, are limited. In this study, we analyzed...
    2023-03-20
  • SHY2 as a node in the regulation of root meristem development by auxin, brassinosteroids, and cytokinin
    作者: Taotao Li, Xinke Kang, Wei Lei, Xiuhong Yao, Lijuan Zou , Dawei Zhang, Honghui LinAbstract: In multicellular organisms, the balance between cell division and differentiation determines organ size, and represents a central unknown in developmental biology. In Arabidopsis roots, this balance is mediated between cytokinin and auxin through a regulatory circuit converging on the IAA3/SHORT HY...
    2023-03-20
  • Sky islands as foci for divergence of fig trees and their pollinators in southwest China
    作者: Junyin Deng, Ronghua Fu, Stephen G. Compton, Mei Liu, Qin Wang, Chuan Yuan, Lushui Zhang, Yan ChenAbstract: The dynamics of populations and their divergence over time have shaped current levels of biodiversity and in the case of the ‘sky islands’ of mountainous SW China have resulted in an area of exceptional botanical diversity. Ficus tikoua is a prostrate fig tree sub-endemic to the a...
    2023-03-20
  • Temperature and soil nutrients drive the spatial distributions of soil macroinvertebrates on the eastern Tibetan Plateau
    作者: Yulian Yang, Qinggui Wu, Wanqin Yang, Fuzhong Wu, Li Zhang, Zhenfeng Xu, Yang Liu, Bo Tan, Han Li, Wei ZhouAbstract: Improved knowledge of biological diversity patterns associated with elevation and their driving factors is indispensable for developing ecological theories. However, the results for the elevational distribution patterns of soil fauna are not consistent due to differing clim...
    2023-03-20
  • The complete mitochondrial genome sequence of big-eyed Mountain keelback Pseudoxenodon macrops
    作者: Jiahong Liao, Min Tang, Liqing Peng, Lichun Jiang, Zhangqiang You, Wei Chen Abstract: In this study, the complete mitochondrial genome of big-eyed mountain keelback Pseudoxenodon macrops was sequenced adopting Illumina high-throughput sequencing technology. The complete mitogenome of the species was 19,444 bp in length, including 13 protein-coding genes, 22 transfer RNA (tRNA) genes, two ...
    2023-03-20
  • The complete mitochondrial genome sequence of Himalayan toad Duttaphrynus himalayanus (Anura: Bufonidae)
    作者: Jiahong Liao, Min Tang, Liqing Peng, Lichun Jiang, Zhangqiang You, Wei ChenAbstract: In this study, the complete mitochondrial genome of Duttaphrynus himalayanus was sequenced adopting Illumina high-throughput sequencing method. The complete mitogenome of the species was 17,172 bp in length, including 13 protein-coding genes, 22 transfer RNA (tRNA) genes, two ribosomal RNA genes, and a no...
    2023-03-20
  • The complete mitochondrial genome sequences of Nanorana chayuensis
    作者: Min Tang, Jiahong Liao, Liqing Peng, Lichun Jiang, Zhangqiang You, Wei ChenAbstract: In this study, we obtained the complete mitochondrial genome sequence of Nanorana chayuensis. The mitogenome length is 17,882 bp, including 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNA), 2 ribosomal RNA genes (rRNA), and 1 non-coding control region (CR). Present data will contribute to furt...
    2023-03-20
  • The genetic consequences of habitat specificity for fig trees in southern African fragmented forests
    作者: Junyin Deng, Simon van Noort, Stephen G. Comptond, Yan Chen, Jaco M. GreeffAbstract: Theory predicts that fragmentation will lead to reduced gene flow between populations, with loss of genetic diversity and increased population differentiation. However, these predictions may not always hold true, especially for long-lived woody plants and some fig trees (Ficus species) may not be affected...
    2023-03-20
  • 被子植物性系统及其可塑性
    作者: 刘美、黎云祥、陈艳摘要: 繁殖是生物适合度的最终表现,有性繁殖相关性状的多态性极大地促进了物种分化和生物多样性的维持,并影响着植物对环境变化的响应。在种群水平上,被子植物的花有雌花、雄花和两性花三种性表型,三种性表型在种群中的分布和频率即定义了种群的性系统。被子植物的性系统包含植物影响性分配和交配的相关特性,决定着雌配子、雄配子在种群中的频率、交配机会及交配方式,是有性繁殖的关键性状,在被...
    2023-03-20
  • 川中丘陵区柏木(Cupressus funebris)土壤浸提液对3种农作物种子萌发和幼苗生长的影响
    作者: 杨玉莲、刘小丽、吴丽君、刘瑶、吴庆贵摘要: 某些植物和土壤浸提液的化感作用会影响种子萌发和幼苗生长。关于川中丘陵区的柏木(Cupressus funebris)土壤浸提液对作物种子萌发和幼苗生长是否有影响以及如何影响,推测柏木的土壤浸提液可能抑制作物的种子萌发和幼苗生长。采用室内种子萌发实验,研究土壤浸提液(0.00 g/mL、0.01 g/mL、0.02 g/mL、0.05 g/mL和0.10 g/mL)对番茄(Lycopersicon esculentum)、辣椒(Capsi...
    2023-03-20
  • 冻融循环对川西亚高山森林土壤酶活性的影响
    作者: 陈子豪、张晓蓉、谭波、卫芯宇、谌亚、杨玉莲、吴庆贵、张丽摘要: 土壤酶活性的研究有助于认识植物-微生物-土壤有机质之间的相互关系,土壤酶的生产遵循“经济法则”,冻融循环将会改变生产土壤酶的资源分配,最终影响土壤的有机质分解过程。亚高山森林土壤具有明显的季节性冻融循环,为深入研究亚高山森林冬季土壤生态过程,以川西亚高山针阔混交林、针叶林以及阔叶林土壤为研究对象,通过室内培养研究冻融循环对6种与碳...
    2023-03-20
  • 涪江中游不同林分土壤水分—物理性质研究
    作者: 林浩、吴丽君、曾艳、李卫忠、刘谣、杨玉莲、吴庆贵摘要: 研究区域内森林土壤水分—物理性质对评价该区域森林涵养水源功能具有重要指导意义。为揭示涪江中游区域森林涵养水源的能力,选取7种典型林分为研究对象,通过野外调查和环刀法,对涪江中游7种不同林分0~20 cm (M1)、20~40 cm (M2)土壤的物理性质和持水能力进行分析。结果表明:(1)不同林分间土壤容重均值为1.35~1.85 g·cm-3,依次是桤木 × 洋槐混交林>...
    2023-03-20
  • Complete mitochondrial genome sequence of the Himalayan Griffon, Gyps himalayensis (Accipitriformes: Accipitridae): Sequence, structure, and phylogenetic analyses
    作者: Lichun Jiang, Liqing Peng, Min Tang, Zhangqiang You, Min Zhang, Andrea West, Qiping Ruan, Wei Chen, Juha MeriläAbstract: This is the first study to describe the mitochondrial genome of the Himalayan Griffon, Gyps himalayensis, which is an Old World vulture belonging to the family Accipitridae and occurring along the Himalayas and the adjoining Tibetan Plateau. Its mitogenome is a closed c...
    2023-03-14
  • Ecotoxicological effects of metals with different concentrations and types on the morphological and physiological performance of wheat
    作者: Kun Jiang, Bingde Wu, Congyan Wang, Qiong RanAbstract: Large amounts of heavy metals end up in the environment as a result of ever-increasing anthropogenic activities and economic development. At least two specific types of heavy metals occur in the soil sub-ecosystem in most regions of China, especially in farmland. The morphological and physiological performance of wheat play a vital ro...
    2023-03-14
  • Transcription factor WRKY30 mediates resistance to Cucumber mosaic virus in Arabidopsis
    作者: Lijuan Zou, Feng Yang , Yonghong Ma, Qinggui Wu, Kexian Yi, Dawei ZhangAbstract: WRKY transcription factors are key regulators in regulating abiotic or biotic stress response in Arabidopsis. Previous studies showed that WRKY30 expression was induced by oxidative stress treatment, fungal elicitor, SA and ABA. However, functions of WRKY30 on viral defense are not well studied. Here, we foun...
    2023-03-14
  • The enhancement of root biomass increases the competitiveness of an invasive plant against a co-occurring native plant under elevated nitrogen deposition
    作者: Guangqian Ren, Qin Li, Yan Li, Jian Li, Michael Opoku Adomako, Zhicong Dai, Guanlin Li, Lingyun Wan, Bin Zhang, Chris B. Zou, Qiong Ran, Daolin DuAbstract: Nitrogen (N) is one of the most important nutrition controlling plant functioning and ecological stability, which is predicted to increase rapidly in the future. Despite numerous attempts to clarify the effects of N deposition on the g...
    2023-03-14
  • Protein chip analysis of cytokines reveals a key mechanism of the antitumor and immunostimulatory activities of Tricholoma Matsutake polysaccharide
    作者: Xiang Ding, Nan Zhang, Yiling Hou, Hongqing ZhuAbstract: Polysaccharide has been widely used in medical and health field because of its function of immune regulation. The aim of present study was to use protein chip to test the 200 cytokines secreted by macrophages which were induced by the polysaccharides of Tricholoma matsutake (TMP-A) to study the role of TMP-A acting on macrophages an...
    2023-03-14
  • Loss of top-down biotic interactions changes the relative benefits for obligate mutualists
    作者: Rong Wang, Xiaoyong Chen, Yan Chen, Gang Wang, Derek W. Dunn, Rupert J. Quinnell, Stephen G. ComptonAbstract: The collapse of mutualisms owing to anthropogenic changes is contributing to losses of biodiversity. Top predators can regulate biotic interactions between species at lower trophic levels and may contribute to the stability of such mutualisms, but they are particularly likely to b...
    2023-03-14
  • Litter removal reduced soil nitrogen mineralization in repeated freeze-thaw cycles
    作者: Yulian Yang, Li Zhang, Xinyu Wei, Ya Chen, Wanqin Yang, Bo Tan, Kai Yue, Xiangyin Ni, Fuzhong Wu Abstract: Repeated freeze-thaw cycles (FTCs) can alter the relationships between plant litter and soil nitrogen (N) mineralization in subalpine ecosystems, but little information is available about the underlying mechanisms. Therefore, a controlled soil incubation experiment was carried out to...
    2023-03-14
  • In vitro propagation of the Chinese traditional and medicinal plant Heracleum scabridum Franch
    作者: Lijuan Zou, Jinyao Hu, Minghua Luo, Qinggui WuAbstract: Three explants such as stem tips, leaves and petioles of Heracleum scabridum were compared for their shoot development/differentiation ability by using different plant growth regulators (PGRs). The most effective PGRs combination for callus induction and organogenesis was determined. TDZ, Kn, Zn and IAA were used to induce multiple s...
    2023-03-14
  • 四川邛崃山脉雪豹与散放牦牛潜在分布重叠与捕食风险评估
    作者:史晓昀、施小刚、胡强、官天培、付强、张剑、姚蒙、李晟摘要:由雪豹(Panthera uncia)捕食散放家畜引起的人兽冲突是目前中国雪豹保护面临的主要挑战之一。四川邛崃山脉地处雪豹分布范围的东南缘,本研究以邛崃山中部的自然保护区群为研究区,收集了2014–2018年红外相机调查和动物粪便DNA分析中采集到的雪豹与散放牦牛的分布位点,使用MaxEnt物种分布模型预测两物种在研究区内的潜在分布范围,以两物种分布重叠的程度作...
    2023-03-14
  • 冻融循环对亚高山森林土壤微生物生物量及群落结构的影响
    作者:谌亚、贾雨桥、王欣宇、杨万勤、吴福忠、张丽、卫芯宇、陈子豪、杨玉莲、谭波摘要:土壤冻融循环过程释放的碳和养分是维持亚高山森林冬季土壤微生物活性的重要保障。为了解冻融循环对土壤微生物群落的影响,以川西亚高山针叶林、阔叶林和针阔混交林土壤为对象,采用微缩实验研究了冻融循环(-5℃冻结12 h,5℃解冻12 h为一个冻融循环,共80次)对土壤微生物群落磷脂脂肪酸(PLFAs)含量和结构的短期影响。结果表明:土壤...
    2023-03-14
  • 增温对高寒灌丛根际和非根际土壤微生物生物量碳氮的影响
    作者:马志良、赵文强、刘美、刘庆摘要:本文对青藏高原东缘窄叶鲜卑花高寒灌丛生长季根际和非根际土壤微生物生物量碳和氮对增温的响应进行研究。结果表明:窄叶鲜卑花灌丛生长季初期根际和非根际土壤微生物生物量碳和氮均显著高于生长季中期和末期。在多数时期,增温对根际土壤微生物生物量碳和氮的影响不显著。在非根际土壤中,增温对土壤微生物生物量碳和氮的影响因不同生长季节而不同:增温使生长季初期土壤微生物生物量碳...
    2023-03-14
  • 西藏林芝下察隅镇发现黑眶蟾蜍
    作者:张丽霞、盛永笋、袁翔宇、安东、刘振豪、廖家红、陈伟摘要:2019年4月,在西藏自治区林芝地区察隅县下察隅镇(97°01′11″E,28°29′58″N,海拔1 550 m)附近草丛及石堆间采集到一批两栖类标本。经分类鉴定,其中一种为蟾蜍科(Bufonidae)头棱蟾属(Duttaphrynus)的黑眶蟾蜍(D.melanostictus),为西藏地区分布新记录种。主要鉴别特征:雄性成体平均体长(67.1±10.6)mm(n=10),雌性(76.3±13.7)mm(n=10)。头宽...
    2023-03-14
  • 唐家河自然保护区不同植被带草本层生物量及其影响因素
    作者:张枥丹、徐亮、谌利民、谭露、陈艳摘要:为揭示唐家河自然保护区不同植被带草本植物生物量的差异及其影响因素,连续三年采用样方法对唐家河4个植被带(常绿阔叶林、常绿落叶阔叶混交林、落叶阔叶林、针叶林)的草本植物种类、多度、盖度及其所在群落的乔木层郁闭度和灌木层盖度进行调查。结果显示:1)不同植被带的草本生物量存在显著差异(P <0.001),落叶阔叶林的草本生物量最高,常绿落叶阔叶混交林的草本地上生物量...
    2023-03-14
  • 四川中江桔梗产地加工炮制一体化工艺研究
    作者:罗明华、康卫龙、陈桂芳、顾冰、敬章书摘要:本研究以桔梗皂苷D、桔梗总皂苷、黄酮、多糖和乙醇浸出物为研究对象,考察产地加工炮制一体化方法和传统加工方法、切片厚度和干燥温度对桔梗饮片质量的影响,采用归一距离评价法对实验数据进行分析。研究结果表明,加工炮制一体化方法优于传统加工方法,干燥工艺会对桔梗中4种成分和乙醇浸出物的含量造成影响,桔梗饮片产地加工炮制一体化的最佳加工工艺为:桔梗药材捡去沙石...
    2023-03-14
  • 基于地形的牲畜空间利用特征及干扰评价-以王朗国家级自然保护区为例
    作者:陈星、赵联军、胡茜茜、罗春平、梁春平、蒋仕伟、梁磊、郑维超、官天培
    2023-03-14
  • 南方农牧交错带降水变化及旱涝多时间尺度特征
    作者:张雪茂、董廷旭、杜华明、邱豪、严霜摘要:[目的]分析南方农牧交错带降水变化及旱涝多时间尺度特征,为该区旱涝灾害防治决策、牧区生态重建及保护提供科学参考。[方法]基于南方农牧交错带1960—2017年20个气象站点逐月降水量资料,采用标准化降水指数(SPI)、反距离权重插值、M-K突变检验等方法对南方农牧交错带近58 a的降水特征及旱涝灾害时空格局进行研究。[结果]①近58 a以来南方农牧交错带年平均降水量以3.98 mm/10 ...
    2023-03-14
  • 基于红外相机的四川亚丁国家级自然保护区鸟兽多样性初报
    作者:胡茜茜、李佳琦、罗旭、泽翁他许、陈星、张卢水、官天培摘要:2017年5~11月,我们在四川亚丁国家级自然保护区内共布设64台红外相机,对保护区内的兽类和鸟类多样性进行了调查。经过8 394个相机工作日的调查,我们共鉴定出分属9目26科共56种的野生兽类和鸟类,其中国家Ⅰ级、Ⅱ级重点保护野生动物分别有5种和13种,被IUCN红色名录评估为濒危(EN)、易危(VU)、近危(NT)的野生动物分别有2种、3种和6种。相对多度指数居...
    2023-03-14
  • 增温对高寒灌丛土壤呼吸不同组分的影响机制
    作者:马志良、刘美、赵文强摘要:陆地生态系统土壤呼吸对气候变暖的响应研究方面目前还没有一致的结论,其原因可能为土壤呼吸不同组分对土壤温度变化的敏感性及相应的非生物和生物机制存在显著差异。文章分别从非生物因素和生物因素系统地论述了增温对青藏高原东部窄叶鲜卑花(Sibiraea angustata)高寒灌丛土壤呼吸不同组分的影响机制,发现增温可通过提高土壤微生物群落和植物根系的生理活性直接促进土壤异养呼吸和根系呼吸...
    2023-03-14
  • 高寒灌丛生长季根际和非根际土壤多酚氧化酶和过氧化氢酶活性对增温的响应
    作者:马志良、赵文强、刘美摘要:研究青藏高原东部窄叶鲜卑花高寒灌丛生长季根际和非根际土壤多酚氧化酶和过氧化氢酶活性对增温(1.3℃)的响应,分析全球气候变暖对高寒灌丛根际土壤生态过程的影响。结果表明:生长季中期根际和非根际土壤多酚氧化酶活性显著高于生长季初期和末期;而土壤过氧化氢酶活性在非根际土壤中随生长季节逐步提高,在根际土壤中没有表现出明显的季节变化。在非根际土壤中,增温使生长季末期土壤多酚氧...
    2023-03-14
  • Pitfall of big databases
    作者: Zhangqiang You, Junhua Hu, Qing Wei, Chunwang Li, Xiaofei Deng, and Zhigang Jiang 
    2023-03-14
  • Spatial variation of the hypsometric integral and the implications for local base levels in the Yanhe River, China
    作者: Mingliang Luo, Yali Xu, Kai Mu, Rulan Wang, Yang Pu Abstract: The hypsometric integral (HI) is a terrain analysis factor that reflects the landform erosion stage. As a macroscopic parameter, application of HI could reveal the quantitative characteristics of landform evolution at the catchment scale. A 1-arc-second resolution Advanced Spaceborne Thermal Emission and Reflection Radiometer g...
    2023-03-14
  • The first complete mitochondrial genome sequence of Nanorana parkeri and Nanorana ventripunctata (Amphibia Anura Dicroglossidae), with related phylogenetic analyses
    作者: Lichun Jiang, Zhangqiang You, Peng Yu, Qiping Ruan, Wei ChenAbstract: Members of the Nanorana genus (family Dicroglossidae) are often referred to as excellent model species with which to study amphibian adaptations to extreme environments and also as excellent keystone taxa for providing insights into the evolution of the Dicroglossidae. However, a complete mitochondrial genome is current...
    2023-03-14
  • The complete chloroplast genome of Antiaris toxicaria, a medicinal and extremely toxic species
    作者: Lushui Zhang, Xiaoyue Yang, Xingxing Mao, Zefu WangAbstract: Antiaris toxicaria (Antiaris, Moraceae) is a medicinal and extremely toxic species. To facilitate species identification and provide genetic information, we determined the complete chloroplast genome of A. toxicaria using the Illumina platform. The genome was 161,412 bp in length, comprising a large single-copy region (LSC) of ...
    2023-03-14
  • Metagenomic analysis of sichuan takin fecal sample viromes reveals novel enterovirus and astrovirus
    作者: Tian-Pei Guan, Jade L.L. Teng, Kai-Yan Yeong, Zhang-Qiang You, Hao Liu, Samson S.Y. Wong, Susanna K.P. Lau, Patrick C.Y. WooAbstract: The Sichuan takin inhabits the bamboo forests in the Eastern Himalayas and is considered as a national treasure of China with the highest legal protection and conservation status considered as vulnerable according to The IUCN Red List of Threatened Species....
    2023-03-14
  • Plant reproductive strategies vary under low and high pollinator densities
    作者: Junpeng Mu, Qinggui Wu, Yulian Yang, Mei Huang, Christina M. GrozingerAbstract: Long-term variation in the population density of honey bees Apis mellifera across landscapes has been shown to correlate with variation in the floral traits of plant populations in these landscapes, suggesting that variations in pollinator population density and foraging rates can drive floral trait evolution ...
    2023-03-14
  • High Altitude Frogs (Rana kukonoris) Adopt a Diversified Bet-hedging Strategy in the Face of Environmental Unpredictability
    作者: Wei CHEN, Liqing PENG, Lichun JIANG, David A. PIKE, Christopher R. FRIESEN, Gregory BROWNAbstract: Environmental unpredictability can influence strategies of maternal investment among eggs within a clutch. Models predict that breeding females should adopt a diversified bet-hedging strategy in unpredictable environments, but empirical field evidence from Asia is scarce. Here we tested this...
    2019-03-13
  • Effect of six years of nitrogen additions on soil chemistry in a subtropical Pleioblastus amarus forest, Southwest China
    作者: Guan-tao Chen, Li-hua Tu, Guang-sheng Chen, Jin-yao Hu, Zhou-lin HanAbstract: Soil chemistry influences plant health and carbon storage in forest ecosystems. Increasing nitrogen (N) deposition has potential effect on soil chemistry. We studied N deposition effects on soil chemistry in subtropical Pleioblastus amarus bamboo forest ecosystems. An experiment with four N treatment levels (0, ...
    2023-03-14
  • Soil Nitrogen Responses to Soil Core Transplanting Along an Altitudinal Gradient in an Eastern Tibetan Forest
    作者: Li Zhang, Ao Wang, Fuzhong Wu, Zhenfeng Xu, Bo Tan, Yang Liu, Yulian Yang, Lianghua Chen, Wanqin YangAbstract: To understand the differential effects of altitudinal gradient on soil inorganic nitrogen concentration and associated ammonia-oxidizingbacteria (AOB) and archaea (AOA), intact soil cores from a primary coniferous forest were in situ incubated in an alpine forest at a 3582-m alti...
    2023-03-14
  • Soil respiration in a subtropical forest of southwestern China Components, patterns and controls
    作者: Kaijun Yang, Yulian Yang, Zhenfeng Xu, Qinggui WuAbstract: Partitioning the components of soil respiration is crucial to understand and model carbon cycling in forest ecosystems. In this study, total soil respiration (RS), autotrophic respiration (RA), heterotrophic respiration (RH), litter respiration (RL), litterfall input and environmental factors were synchronously monitored for 2 yea...
    2023-03-14
  • Complete mitochondrial genome of Chinese Noctule bat, Nyctalus plancyi (Microchiroptera Vespertilionidae)
    作者: Lichun Jiang, Rendan Meng, Hao Liu, Zhangqiang You, Ling Zhao, Xiaodong Jia, Hongyan ShiAbstract: The Chinese Noctule bat, Nyctalus plancyi, is an endemic bat species of China, which has been listed as Least Concern on the IUCN red list of Threatened Species. Here we sequenced and characterized the complete mitochondrial genome of N. plancyi for the first time. The mitogenome is 17,494 bp...
    2019-03-13
  • 四川9种有蹄类动物夏秋季活动节律研究
    作者:孙佳欣、李佳琦、万雅琼、李晟、官天培、王杰、夏万才、徐海根摘要:基于全国哺乳动物观测网络中四川王朗、四姑娘山、贡嘎山及亚丁4个自然保护区2017年6—11月红外相机数据,利用相对丰富度指数RAI对四川羚牛(Budorcas tibetanus)、中华鬣羚(Capricornis milneedwardsii)、水鹿(Cervus unicolor)、毛冠鹿(Elaphodus cephalophus)、林麝(Moschus berezovskii)、高山麝(Moschus chrysogaster)、小麂(Muntiacus...
    2023-03-14
  • 四姑娘山国家级自然保护区鸟兽多样性初步调查
    作者:胡茜茜、郑维超、李佳琦、李晟、杨晗、陈星、官天培
    2023-03-14
  • 岷山蟾蜍释放叫声的特征研究
    作者:陈伟、彭丽清、甘立涛、任旭丽、华珂君、蔡荣强、刘昊摘要:声音研究是两栖动物学研究的一个重要范畴。本文研究了四川省若尔盖湿地自然保护区分布的岷山蟾蜍释放叫声的特征,并比较了繁殖期处于抱对和未抱对的雄性个体释放叫声的差异,结果表明,该蟾蜍释放叫声的鸣声数为(4.778 2±1.157 9)次,鸣声平均时长为(0.040 2±0.137 8)s,鸣声间隔时间为(0.209 8±0.165 83)s,能量为(71.457 6±5.270 7)dB,脉冲数为(72....
    2023-03-14
  • 我国自然保护区两栖动物的分布格局研究
    作者:陈伟、侯思宇、彭丽清、周治成、文琳摘要:[目的]了解我国两栖动物资源的分布状况。[方法]基于49个自然保护区两栖动物的调查数据,研究了我国自然保护区两栖动物的分布规律。使用一般线性模型分析了保护区面积、平均海拔、平均纬度、年平均气温和年平均降雨量5个环境因子对我国两栖动物分布的影响。[结果]保护区的平均海拔对我国两栖动物科、属、种的数量分布均没有明显影响;保护区面积除了对两栖动物科水平的分布有影响...
    2023-03-14
  • 岷江源头区乔灌交错带地被物和土壤持水能力
    作者:马志良、赵文强、刘美、朱攀、刘庆摘要:通过野外调查和室内试验,定量评价了岷江源头区交错带云杉针叶林、云杉针叶林-山生柳灌丛交错区(乔灌)和窄叶鲜卑花灌丛3个林型的地被物(枯落物和苔藓)和土壤持水特征。结果表明:3个林型地被物储量差异显著,其大小顺序为乔灌(72.67t/hm2)>针叶林(43.87t/hm2)>灌丛(11.00t/hm2);针叶林和乔灌的苔藓层的储量分别为27.00,44.71t/hm2,占地被物总储量的61.5%以上。地被物...
    2023-03-14
  • 生态文明视角下普通高校专业硕士生态学教学模式初探
    作者:慕军鹏、陈艳摘要:生态文明建设是我国经济、文化、社会协调发展的重大战略部署。如何培养具有生态知识、生态意识、生态精神、生态智慧、生态品德和生态文化的"生态人"是实现这一战略的基本保障。本文对生态文明视角下普通高校专业硕士生态学课程教学模式进行了探索,旨在为培养生态学专业人才提供建议。关键词:生态文明;课程实践;教学改革;人才培养DOI: 10.16276/j.cnki.cn51-1670/g.2018.08.01
    2023-03-14
  • 土壤呼吸组分对气候变暖的响应研究进展
    作者:马志良、赵文强、刘美、朱攀、刘庆摘要:气候变暖正在深刻地改变全球碳循环过程。土壤呼吸作为全球碳循环的重要环节,连接着植物-土壤-微生物之间的碳转移过程。土壤呼吸可分为异养呼吸和根源呼吸(根系呼吸和根际微生物呼吸)等组分。土壤呼吸各组分的发生部位与利用的有机碳源不同,其对气候变暖的响应可能存在显著差异。然而,目前的研究还不能完全实现土壤呼吸各组分的精确区分和量化,气候变暖对土壤呼吸各组分的影...
    2023-03-14
  • 珍稀濒危植物距瓣尾囊草(Urophysa rochkii)的开花物候和繁育系统特性
    作者:别鹏飞、唐婷、胡进耀、蒋炜
    2023-03-14
  • 密度和种间竞争对高原林蛙蝌蚪生长发育的影响
    作者:陈伟、文琳、彭丽清、华珂君、甘立涛、任旭莉、蔡荣强、侯思宇、周治成、石磊、索朗夺尔基摘要:[目的]研究密度和种间竞争对高原林蛙蝌蚪生长发育的影响。[方法]试验组和对照组均设置了高、中、低3个密度水平,试验组将高原林蛙蝌蚪和岷山蟾蜍卵共同饲养,而对照组则单独饲养林蛙蝌蚪,第11天测定了试验组和对照组林蛙蝌蚪的发育阶段、体重、体长、头宽、背宽、尾长。[结果]种间竞争对高原林蛙蝌蚪的发育阶段和背宽都有显...
    2023-03-14
  • 鳞叶龙胆雌蕊先熟和雄蕊先熟适合度比较
    作者:慕军鹏、王勤、代文霏、冯茂洁摘要:对青藏高原东缘早春开花物种鳞叶龙胆(Gentiana squarrosa)雌蕊先熟和雄蕊先熟的适合度进行了比较。试验表明,雌蕊先熟花寿命较长、花粉胚珠比低、投资在雌蕊生产上的资源较多、花朵较小,符合自花授粉特征。雄蕊先熟花寿命较短、花粉胚珠比高、投资在雄蕊生产上的资源较多、花朵较大,符合异花授粉特征。初花期,居群中以雌蕊先熟为主,未发现访花昆虫,自交率较高。盛花期,居群中...
    2023-03-14
  • 蓝白龙胆种子萌发影响因素分析
    作者:慕军鹏、张枥丹、冯茂洁、代文霏摘要:采用室内控制实验研究了蓝白龙胆种子萌发对种子贮藏时间、萌发温度、土壤水分、光照强度、土层厚度的响应。结果显示:贮藏时间、萌发温度、土壤水分、光照强度和土层厚度均影响种子萌发。(1)种子成熟后0-30 d萌发率最高,之后随贮藏时间增加其萌发率开始下降,180 d后萌发率不足3%;(2)种子萌发温度幅较宽,10-30℃均能使其萌发;(3)随土壤含水量的增加,种子萌发率呈现先增加...
    2023-03-14
  • 构树叶性状分化的生态功能初步研究
    作者:慕军鹏、陈红利摘要:叶性状分化在自然界中较为普遍,不同的叶性状特征与植物对资源获得及利用效率密切关联,反映了植物适应特定环境所形成的生存对策。叶性状分化的生态功能一直以来备受生态学家和进化生物学家的广泛关注。自然界构树(Broussonetia papyifera)在个体发育过程中出现全缘叶和裂缺叶的分化,但其生态功能尚不清楚,推测两者的叶型分化是构树对虫害规避的结果。为了探讨构树叶性状分化对应的可能生态功能...
    2023-03-14
  • 高寒灌丛生长季土壤转化酶与脲酶活性对增温和植物去除的响应
    作者:马志良、赵文强、刘美、朱攀、刘庆摘要:对青藏高原东缘窄叶鲜卑花土壤转化酶与脲酶活性对增温(0.6-1.3℃)和植物去除的响应进行研究,以了解气候变暖和植被干扰对高寒灌丛生长季不同时期土壤生态过程的影响。结果表明:增温在整个生长季节使去除/不去除植物处理土壤转化酶活性显著增加了3.7%-13.3%。增温除在生长季末期对不去除植物处理土壤脲酶活性影响不显著以外,在其他时期使去除/不去除植物处理土壤脲酶活性显著增...
    2023-03-14
  • 不同退化演替阶段高寒草甸土壤理化性质对功能群植物地上生物量的影响
    作者:慕军鹏、付荣华、谭露摘要:笔者对若尔盖高寒草甸红原县境内不同退化演替草甸土壤理化性质和功能群植物地上生物量进行了调查。结果发现:不同退化演替阶段土壤理化性质存在显著差异;随退化程度加剧,莎草科地上生物量显著降低,而禾本科地上生物量未达到差异显著水平,群落地上生物量和杂草生物量在草地草甸阶段最高;不同退化演替阶段,土壤理化性质对莎草科、禾本科和杂草地上生物量的影响程度不同,在退化草甸中,土...
    2023-03-14
  • 不同光照时间对航天诱变凤仙花SP5和SP8代幼苗生长的影响
    作者:闫秋洁、彭兰、李建华、王红玉、李艳摘要: 以航天诱变凤仙花诱变第5代(SP5)和第8代(SP8)种子为试材,采用光照时间对比处理的方法,研究了不同光照时间(9、12、15h·d-1)对普通凤仙花幼苗、航空诱变凤仙花SP5代和SP8代幼苗生长、叶绿素含量和可溶性蛋白质含量的影响,以期明确航天诱变凤仙花不同诱变世代对光照时间的响应。结果表明:除幼苗的根长外,航天诱变凤仙花SP8代在苗高、根冠比、叶面积、叶绿素a含量、叶绿...
    2023-03-14
  • 白水河国家级自然保护区羚牛适宜栖息地评价
    作者:胡大明、邓玥、温平、梁磊、夏奎、官天培摘要: 羚牛是青藏高原-横断山脉的特有濒危物种。其中的四川羚牛主要分布在四川省的岷山和邛崃山系。识别栖息地适宜性是科学管理和保护栖息地的前提。为提高局域尺度羚牛种群的保护,2017年—2018年笔者在白水河国家级自然保护区通过样线调查和红外相机调查相结合的方式对羚牛的栖息地适宜性进行了分析和评价。结果显示,模型可靠(AUC> 0.85)且保护区内羚牛适宜栖息地分布局限(...
    2023-03-14
  • A Protocol for Rapid and High-Frequency In Vitro Propagation of Solanum nigrum L.
    作者: Lijuan Zou, Jingtian Yang, Qinggui WuAbstract: Solanum nigrum L. is a species highly valued for its medicinal properties. In the present study, an efficient propagation system was established by using five explants of S. nigrum namely, roots, leaves, rooted hypocotyls, nodal segments and petioles. Various types of plant growth regulators (PGRs) were used to determine the most effective ho...
    2023-03-21
  • Analysis of the resistance to rice blast and false smut of 18 varieties of hybrid rice in Sichuan Province, China
    作者: Yan Li, Jun Shi, Zufen Xiang, Rongping Hu, Shoupei Shi, Tao Peng, Dingyou Liu, Tingyou HuangAbstract: Rice blast and false smut are severe diseases of rice reducing not only rice yield but also affect grain quality. The most effective and economical mean of controlling diseases is to breed disease-resistant rice cultivars. Here, we used 18 hybrid rice varieties for identifying their funct...
    2023-03-21
  • Development of 15 polymorphic microsatellite markers for Ficus virens (Moraceae)
    作者: Ronghua Fu, Yunxiang Li, Mei Liu, Qiumei QuanAbstract: Premise of the study: Ficus virens (Moraceae) is distributed widely in South and Southeast Asia, Melanesia, and northern Australia, and it is also cultivated outside its original northern range limit in southwestern China. Therefore, the species is well suited to explore the mechanism of range limits of Ficus species. However, little ...
    2023-03-21
  • Effect of microtopography on soil respiration in an alpine meadow of the Qinghai-Tibetan plateau
    作者: Guoyong Li, Junpeng Mu, Yinzhan Liu, Nicholas G. Smith, Shucun SunAbstract: Background and aims Soil respiration is an important component of terrestrial carbon cycling and is sensitive to environmental change. Most previous studies focus on the effect of soil temperature and moisture on soil respiration, whereas the impact of spatial heterogeneity (e.g., microtopography) is seldom studie...
    2023-03-21
  • Evidence for directional testes asymmetry in Hyla gongshanensis jindongensis
    作者: Qinggui Wu, Wenbo LiaoAbstract: The compensation hypothesis predicts that one testis may grow more for compensating for a reduced function in the other testis, thus exhibiting a directional asymmetry in testis size. In this study, we tested the prediction of the compensation hypothesis in the Chinese endemic Tree Frog Hyla gongshanensis jingdongensis in a population in Kegong Reserve site...
    2023-03-21
  • Host-parasitoid relationships within figs of an invasive fig tree: a fig wasp community structured by gall size
    作者: Stephen G. Compton, Xiaoyong Chen, Yan Chen, Melanie J. Hatcher, Yanqiong Peng, Rupert J. Quinnell, Lillian J. Rodriguez, Hui Yu, Ao Ouyang, Fanglu Wei, Zheting Cai, Rong WangAbstract: 1. Revealing the host specificity of the predators/parasitoids of invasive species is a prerequisite when assessing the suitability of biocontrol agents,while the host ranges of top predators are likely to ...
    2023-03-21
  • Pollinator preference and pollen viability mediated by flower color synergistically determine seed set in an Alpine annual herb
    作者: Junpeng Mu, Yulian Yang, Yanling Luo, Ruijun Su, Karl J. NiklasAbstract: Gentiana leucomelaena manifests dramatic flower color polymorphism, with both blue-and white-flowered individuals (pollinated by flies and bees) both within a population and on an individual plant. Previous studies of this species have shown that pollinator preference and flower temperature change as a function of fl...
    2023-03-21
  • Sex and weaponry the distribution of toxin-storage glands on the bodies of male and female cane toads (Rhinella marina)
    作者: Wei Chen, Cameron M. Hudson, Jayna L. DeVore, Richard ShineAbstract: The parotoid macroglands of bufonid anurans store (and can expel) large volumes of toxic secretions and have attracted detailed research. However, toxins also are stored in smaller glands that are distributed on the limbs and dorsal surface of the body. Female and male cane toads (Rhinella marina) differ in the location ...
    2023-03-21
  • The complete mitochondrial genome sequence of the Sichuan Digging Frog Kaloula rugifera (Anura: Microhylidae) and its phylogenetic implications
    作者: Lichun Jiang, Li Zhao, Dongmei Cheng, Lilan Zhu, Min Zhang, Qiping Ruan, Wei ChenAbstract: The Sichuan Digging Frog (Kaloula rugifera) belongs to the family Dicroglossidae, which is endemic to northeastern Sichuan and southernmost Gansu provinces, in southwestern China. In this study, the complete mitochondrial genome of K. rugifera was sequenced. The mitogenome was 17,074 bp in length, c...
    2023-03-21
  • GPS跟踪技术在中华山蝠家域及觅食活动研究中的应用
    作者:石红艳、刘昊、严雪、孟仁丹、李海艳、唐中海、贾小东、游章强摘要:家域及觅食活动的研究在探讨动物对资源环境的适应与选择、物种保护等方面有着重要的作用。中华山蝠 Nyctalus plancyi 是伴生人类的房屋栖居型蝙蝠,其家域及觅食活动区域的研究尚属空缺。2016年4月至8月,采用GPS跟踪技术结合标记重捕法对四川省南充市中华山蝠的家域和觅食活动进行了研究。采用颈部捆绑法对14只(11♀﹕3♂)中华山蝠佩戴了Pinpoint10 ...
    2023-03-21
  • 矮壮素对鼓粒期大豆铬亚细胞分布的影响
    作者:李艳、冷燕、韦俊位、彭伟、杨远祥、刘飞摘要:为研究植物外源激素对植物抗重金属特性的影响,以日本青、韩国三青豆2个大豆品种为材料,通过用不同浓度(0、0.50、0.75、1.00、1.50、2.00 g/L)的矮壮素进行浸种处理,研究铬污染土上大豆鼓粒期根、茎、叶、籽粒各器官亚细胞组分(细胞壁、细胞器、细胞可溶性组分)中的铬含量。结果表明,从大豆各器官亚细胞组分中的铬积累及分布比例来看,矮壮素浸种可以提高2个品种各器...
    2023-03-21
  • 中矮壮素施用对大豆土壤有效态重金属含量的影响
    作者:陈李艳、冷燕、韦俊位、彭伟、杨远祥摘要:本文以大豆(Glycine max)品种“日本青”和“韩国三青豆”为研究材料,通过盆栽实验进行土壤锌、铬复合污染模拟,探讨不同浓度矮壮素浸种和喷施处理(0、0.50、0.75、1.00、1.50、2.00g/L)对大豆土壤有效态重金属含量的影响。结果表明,在鼓粒期,矮壮素喷施和浸种降低了“日本青”和“韩国三青豆”根际土有效态锌含量,但与对照相比降低程度未达到显著水平;与对照组相比,浸...
    2023-03-21
  • 斑羚线粒体基因组序列分析与系统分类地位
    作者:姜立春、石红艳、游章强、刘昊、陈伟摘要:斑羚Naemorhedus goral隶属于牛科Bovidae羊亚科Caprinae,分布于喜马拉雅地区包括不丹、印度北部、尼泊尔、西藏南部、巴基斯坦北部、缅甸西部等地。采用Long-PCR技术和Primer-walking测序方法,获取斑羚线粒体全基因组序列,并对其序列结构和特征进行分析。结果表明,斑羚线粒体基因组全长为16,533bp,包括13个蛋白质编码基因、2个rRNA基因、22个tRNA基因和一个非编码区;正如...
    2023-03-21
  • 不同试剂对水稻种子萌发和幼苗生长的影响
    作者:李兰、石军、卫作源、尓戈木加、李艳摘要:[目的]研究不同试剂处理对水稻种子萌发力和幼苗生长的影响。[方法]以水稻种子为研究材料,以清水浸泡作为对照,经NaCl、CuSO4、CaCl2、KNO3、Na2B4O7不同浓度试剂浸泡处理水稻种子后,在培养皿中进行发芽试验,测定和计算其发芽势、发芽率、发芽指数、种子活力指数、地上鲜重、根重、根长、苗高。[结果]除CuSO4外,其他试剂对水稻种子的发芽力均有促进作用,其中以1.5%CaCl2作用...
    2023-03-21
  • 川西高山森林不同时期土壤转化酶和脲酶活性对模拟气候变暖的响应
    作者:张丽、吴福忠、徐振锋、谭波、刘洋、杨玉莲、王奥、杨万勤摘要:为了解气候变化对不同时期川西高山森林土壤生态过程的影响,于2010年5月—2011年4月期间,通过原状土柱移位实验,模拟理论增温1.78℃和3.52℃对岷江冷杉原始林(3582 m)土壤转化酶和脲酶活性的影响。结果表明,海拔下降284 m和559 m分别使全年平均气温实际增高1.39℃和2.64℃,但由于季节性雪被的影响,海拔降低559 m后土柱的土壤有机层和矿质土壤层的全年...
    2023-03-21
  • 海拔对珍稀濒危植物珙桐叶片特征的影响
    作者:吴尚明、李曲、蒋玉林、沙正局、李艳摘要:本研究分析了珙桐分布区龙苍沟国家森林公园内不同海拔(1400,1580,1720m)梯度珙桐叶片的叶绿素含量,碳氮特征及超微结构,探讨其对海拔梯度的适应机制。结果表明,珙桐不同海拔种群与光合特性相关的光合色素含量随着海拔梯度的升高而下降;叶绿体结构随着海拔的升高无显著差异,但叶绿体中淀粉积累增加;与中等海拔相比,高海拔和低海拔种群的碳氮比均降低,但差异未达到显著...
    2023-03-21
  • 基于RS & GIS的龙门山地区土地利用动态变化研究
    作者:胡利利、赵唯茜、李亦秋、陈盼盼摘要:土地利用作为人地关系交叉最为密切的环节,对区域发展具有重要指导意义。本文运用eCognition软件解译得到龙门山地区1980年、1995年、2005年、2015年的土地利用数据,借助于ARCGIS10.1空间分析功能,采用土地利用程度模型、土地利用动态度模型和土地利用变化区域差异模型对龙门山地区土地利用变化进行分析。结果显示:1980—2015年土地利用程度持续加大,社会经济处于发展期;各时期...
    2023-03-21
  • 龙门山地区水土流失敏感性评价及其空间分异
    作者:陈盼盼、胡利利、李亦秋、邓欧摘要:[目的]确定水土流失优先保护区和需要生态修复的区域,为龙门山的生态环境治理和社会经济发展提供重要的决策依据。[方法]主要考虑降水、土壤侵蚀和地形起伏和植被覆盖等通用土壤流失方程中的水土流失影响因子,对龙门山地区水土流失敏感性进行辨识,并借助于3S技术强大的空间数据采集和分析功能,计算水土流失敏感性综合得分值,按照ArcGIS自然断点分类方法将水土流失敏感性分为不敏感...
    2023-03-21
  • 萘对川西亚高山森林土壤呼吸、养分和酶活性的影响
    作者:杨帆、杨万勤、吴福忠、王惠、蓝丽英、刘育伟、郭彩虹、谭波摘要:萘作为土壤动物化学抑制剂已在土壤动物生态功能的研究中广泛使用,但其非目标效应使其应用仍存在很大的不确定性。为了了解在亚高山森林土壤应用萘抑制土壤动物群落是否存在非目标效应,以青藏高原东缘的川西亚高山森林土壤为研究对象,采用微缩试验研究了萘对土壤呼吸速率、养分含量和酶活性的短期影响。结果表明:萘处理显著抑制了培养0~10 d的土壤呼吸...
    2023-03-21
  • 四川狭口蛙的求偶期鸣声分析
    作者:陈伟、杨攀、符自娟、文琳、官天培、贾小东、刘昊、游章强摘要:动物的鸣声在动物之间的信息交流具有重要作用,其中重要的一项作用就是求偶。为了研究雄性四川狭口蛙(Kaloula rugifera)在求偶期鸣声的特征,在四川省绵阳市绵阳师范学院北校区以及其旁边的森林公园里,采用Sony录音笔,录制了该物种的声音样本。然后通过使用Praat声音分析软件对四川狭口蛙求偶期声音特征进行了分析。结果表明,狭口蛙雄性个体发出的求偶...
    2023-03-21
  • 四川狭口蛙线粒体全基因组序列结构特征及其系统进化关系
    作者:姜立春、陈伟、石红艳、游章强、刘昊、阮期平摘要:四川狭口蛙Kaloula rugifera属姬蛙科Microhylidae,主要分布四川东北、甘肃南部和中国西南部。为澄清其线粒体全基因组序列结构特征与系统分类地位,利用Long-PCR技术和Primer-walking测序法,获得其线粒体全基因组序列,并对序列结构和特征分析;结合现有Microhyloidea总科线粒体基因组数据,基于线粒体基因组13个蛋白编码基因序列,采用贝叶斯推论法(bayesian inferen...
    2023-03-21
  • 四川中江桔梗规范化种植技术标准操作规程
    作者:罗明华、康卫龙、顾冰、田徽、邹丽娟、吴庆贵、陈秀清、陈学川、敬章书摘要:本操作规程明确规定了在四川省中江县种植桔梗的生产环境、采收和储藏种子方法、大田育苗和病虫防治技术和药材采收加工方法和检验方法等。规定了产品以干燥根计,桔梗皂苷D含量不低于0.1%;产品各项质量指标均达到国家相关规定。关键词:桔梗;规范化种植;操作规程DOI: 10.3969/j.issn.1672-612X.2017.02.01
    2023-03-21
  • 重金属镉胁迫下不同栽培模式对水稻生长的影响
    作者:李艳、石军、艾玲、程琳、吴尚明、辜小琴摘要:以宜香优2115(YX),川农优华占(HZ),F优498(FY)为试验材料,通过盆栽实验模拟重金属镉污染,研究不同混作方式和单作方式下水稻生长和物质积累的差异。结果表明:两两混作模式和三品种混作模式下水稻地上和地下部干物质积累均比单作模式下低;光合作用受混作处理影响不大,但4种混作处理下地下部可溶性总糖含量均较单作下显著升高,而地下部淀粉含量在HZ与FY混作以及三...
    2023-03-21
  • 重金属镉胁迫下秸秆还田对水稻光合特性的影响
    作者:辜小琴、石军、吴尚明、程琳、李艳摘要:通过模拟重金属污染并在土壤中施用油菜、小麦秸秆,研究不同秸秆处理对水稻在重金属胁迫下的生长及光合特性影响。结果表明:油菜和小麦秸秆处理均显著提高了水稻的净光合速率、气孔导度和蒸腾速率;小麦秸秆处理显著提高了水稻的生物量;油菜秸秆处理对地上部和地下部的淀粉及可溶性总糖含量均无显著影响,但小麦秸秆处理显著提高了地上部的淀粉和可溶性总糖含量,降低了地下部的...
    2023-03-21
  • A coastal and an interior Douglas fir provenance exhibit different metabolic strategies to deal with drought stress
    作者: Baoguo Du, Kirstin Jansen, Anita Kleiber, Monika Eiblmeier, Bernd Kammerer, Ingo Ensminger, Arthur Gessler, Heinz Rennenberg, Jürgen Kreuzwieser
    2023-03-20
  • Development of fourteen polymorphic microsatellite loci for Ficus tikoua
    作者: Lushui Zhang, Lu Tan, Daimei Hu, Yan ChenAbstract: Premise of the study: Polymorphic microsatellite markers were developed to facilitate studies on the fine-scale population genetic structure of Ficus tikoua (Moraceae), a prostrate shrub known to have highly restricted gene flow.  Methods and Results: Microsatellite primers were developed using the biotin-streptavidin capture method and s...
    2023-03-20
  • Ecological species groups and interspecific association of vegetation in natural recovery process at Xiejiadian landslide after 2008 Wenchuan earthquake
    作者: Qingwei Yang, Shoujiang Liu, Cuihua Hu, Yebin Lin, Bin Zhang, Mingliang Luo, Huiling PengAbstract: Wenchuan earthquake on 12 May 2008 triggered numerous landslides, which disturbed vast areas of vegetation in northwest Sichuan. However, based on our primary field investigation at Xiejiadian landslide in July 2009, we found an obvious increase of the number of plant species and then we mad...
    2023-03-20
  • Effects of experimental warming on soil microbial communities in two contrasting subalpine forest ecosystems, eastern Tibetan Plateau, China
    作者: Didi Sun, Yuejiao Li, Wenqiang Zhao, Ziliang Zhang, Dandan Li, Chunzhang Zhao, Qing LiuAbstract: Soil microbial communities are primarily regulated by environmental temperature. Our study investigated the effects of global warming on soil microbial community composition as measured via phospholipid fatty acid (PLFA) analysis and soil chemical characteristics in relation to soil depth in a...
    2023-03-20
  • Extremely high proportions of male flowers and geographic variation in floral ratios within male figs of Ficus tikoua despite pollinators displaying active pollen collection
    作者: Junyin Deng, Ronghua Fu, Stephen G.Compton, Daimei Hu, Lushui Zhang, Fan Yang, Yan Chen, Finn KjellbergAbstract: Most plants are pollinated passively, but active pollination has evolved among insects that depend on ovule fertilization for larval development. Anther-to-ovule ratios (A/O ratios, a coarse indicator of pollen-to-ovule ratios) are strong indicators of pollination mode in fig t...
    2023-03-20
  • Genetic Diversity and RNA-seq Transcriptome Analysis of Tricholoma matsutake from Sichuan Province, China
    作者: Xiang Ding, Panpan Wang, Yiling Hou, Mei Wang, Wanru Hou, Yuming LiAbstract: The sequences of the internal transcribed spacer (ITS) regions of ectomycorrhizal fungi collected from Sichuan Province were analyzed using a PCR primer pair specific to T. matsutake. The amplified fragments were sequenced and compared with each other to build a phylogenetic tree. The mRNA deep sequencing approac...
    2023-03-20
  • Isolation and characterization of 13 polymorphic microsatellite loci for the fig wasp, Ceratosolen sp. (Hymenoptera: Agaonidae)
    作者: Lu Tan, Junyin Deng, Ronghua Fu, Yan ChenAbstract: Fig wasps are short-lived, delicate and weak-flying. Their long-distance dispersal is highly dependent on the air flow above the canopy. The life forms of their host Ficus species determine their place of release, and so their ability of entering the fast-flowing air above the canopy. Ficus tikoua Bur. is a dioecious prostrate shrub with ...
    2023-03-20
  • Leaching and Freeze-Thaw Events Contribute to Litter Decomposition - A Review
    作者: Liping Jiang, Kai Yue, Yulian Yang, Qinggui WuAbstract: Litter decomposition is vital for carbon and nutrient turnover in terrestrial ecosystems, and this process has now been thoroughly demonstrated to be regulated by various mechanisms. The total environment has been continuously changing in recent decades, especially in high-latitude regions; these alterations, however, profoundly cont...
    2023-03-20
  • lmpacts of temperature on giant panda habitat in the north Minshan Mountains
    作者: Gang Liu, Tianpei Guan, Qiang Dai, Huixin Li, Minghao GongAbstract: Understanding the impacts of meteorological factors on giant pandas is necessary for future conservation measures in response to global climate change. We integrated temperature data with three main habitat parameters (elevation, vegetation type, and bamboo species) to evaluate the influence of climate change on giant pan...
    2023-03-20
  • Males exhibit competitive advantages over females of Populus deltoides under salinity stress
    作者: Yan Li, Baoli Duan, Juan Chen, Helena Korpelainen, Ülo Niinemets, Chunyang Li
    2023-03-20
  • Role of New Nature Reserve in Assisting Endangered Species Conservation - Case Study of Giant Pandas in the Northern Qionglai Mountains, China
    作者: Tianpei Guan, Jacob R.Owens, Minghao Gong, Gang Liu, Zhiyun Ouyang, Yanling SongAbstract: The creation of nature reserves is the most direct way to save endangered species populations and their habitat. Development of the giant panda(Ailuropoda melanoleuca) nature reserve network in China was initiated in the 1960s, though the effort to create new reserves boomed considerably after the ye...
    2023-03-20
  • Seed predators can increase nectar volumes in an alpine daisy: but do the insects benefit?
    作者: Junpeng Mu, Yan Chen, Yuliian Yang, Ronghua Fu, Hui Wang, Stephen G. ComptonAbstract: Pollinators and pre-dispersal seed predators can interact via the plants they share. We examined how pre-dispersal seed predators modify nectar quality and quantity and thereby influence pollinator behaviour. Working in a Tibetan alpine meadow, we hypothesized that increasing levels of pre-dispersal seed...
    2023-03-20
  • Spawning location is linked to the relative size of olfactory nerves in anurans
    作者: Qinggui Wu, Shangling Lou, Yu Zeng, Wenbo LiaoAbstract: The brain is the most important organ associated with demands on cognitive ability, and selection pressures have been implicated to explain variation in brain size and brain architecture in a wide range of taxa. Using phylogenetic comparative methods, we studied the effect of spawning location (terrestrial, lentic and lotic) on varia...
    2023-03-20
  • The complete mitochondrial genome sequence of the Xizang Plateau frog, Nanorana parkeri (Anura: Dicroglossidae)
    作者: Lichun Jiang, Qiping Ruan, Wei ChenAbstract: The Xizang Plateau frog (Nanorana parkeri) belongs to the family Dicroglossidae, which distributes in southern and eastern Xizang, southern-most Qinghai in China, high elevations of north-central Nepal, Himalayan Bhutan, northeastern Kashmir and India. In this study, the complete mitochondrial genome of N.parkeri was sequenced. The mitogenome w...
    2023-03-20
  • Traditional grazing regimes promote biodiversity and increase nectar production in Tibetan alpine meadows
    作者: Junpeng Mu, Yuling Zeng, Qinggui Wu, Karl J. Niklas, Kechang NiuAbstract: Pastoralists claim that traditional management practices involving light to moderate grazing ensure sustainable yield and promote the multifunctional services provided by rangeland ecosystems. Nectar production is a key ecosystem function crucial to successful apiculture and to the sustainability of services provide...
    2023-03-20
  • 3S技术与应用课程教学对专业硕士生工程实践能力的培养
    作者: 李亦秋、邓欧、陈盼盼、胡利利摘要: 以绵阳师范学院专业硕士研究生3S技术与应用课程为例,根据课程所具有的实践性、先进性、扩展性、交叉性、集成性等显著特点,针对学院研究生学科背景和知识结构不同,研究生对课程知识需求的多样性和复杂性,以及3S技术与应用课时偏少之间的矛盾,确定课程以专题形式组织教学。通过与案例相结合,讲解3S技术的基本原理、基础知识和基本技能,通过3S技术在不同研究领域的具体应用培养学...
    2023-03-20
  • 柑橘全爪螨热激蛋白基因PcHsp90的克隆及表达模式分析
    作者: 杨丽红、豆威、蒋红波、牛金志、丁天波、王进军摘要: 【目的】研究热激蛋白基因Hsp90在柑橘全爪螨Panonychus citri生长发育及响应高温和低温胁迫方面的作用。【方法】采用RT-PCR和RACE技术克隆柑橘全爪螨Hsp90基因cDNA全长序列;利用生物信息学软件分析该基因的序列特性;运用荧光Real-time PCR技术,分析Hsp90基因mRNA在该螨各发育阶段、高温及低温胁迫条件下的表达模式。【结果】克隆鉴定出柑橘全爪螨一条Hsp90基因的cD...
    2023-03-20
  • 高山森林林窗对凋落叶分解的影响
    作者: 吴庆贵、吴福忠、谭波、杨万勤、何伟、倪祥银摘要: 林窗对降水和光照等环境条件的再分配以及分解者群落的影响可能深刻作用于森林凋落物分解过程,但有关高山森林林窗大小对凋落物分解的影响尚无研究报道。采用凋落物分解袋法,研究了川西高山森林不同大小林窗对非生长季节和生长季节红桦(Betula albosinensis)和岷江冷杉(Abies faxoniana)凋落叶质量损失的影响。结果显示,经过1a的分解,不同生境下红桦和岷江冷杉凋...
    2023-03-20
  • 龙门山地震带坡耕地土壤侵蚀对有机碳迁移的影响
    作者: 苏正安、李艳、熊东红、董一帆、张素、张宝军摘要: 坡耕地土壤再分布对土壤有机碳(SOC,soil organic carbon)迁移的作用机制研究已成为土壤侵蚀学研究的热点,然而目前极少有研究关注地震后生态脆弱的龙门山地震带坡耕地土壤侵蚀机理及其导致的土壤有机碳再分布规律。该研究选择龙门山地震带内(都江堰市)一块陡坡耕地和一个梯田系列,采用137Cs法和野外调查,对比分析强震导致田垣垮塌和未受损情况下坡耕地土壤侵蚀空间...
    2023-03-20
  • 秦岭大熊猫种群扩散格局及研究方法
    作者: 龚明昊、刘刚、官天培、李惠鑫、岳建兵、周天元摘要: 种群扩散格局是研究种群扩散规律和机制的关键信息,也是制定物种保护对策的重要基础。大型动物种群扩散格局研究方法为扩散生态学研究的薄弱领域,并制约扩散生态学的发展。以秦岭大熊猫为研究对象,根据2000年以来的种群调查数据,基于大熊猫领域的特性,利用GIS的扩展区分析功能和景观分析方法研究了大熊猫种群分布区及动态;基于聚集的特性,利用GIS的核密度分析功...
    2023-03-20
  • 生态旅游对大熊猫影啊评价方法研究-以四川唐家河国家级自然保护区为例
    作者: 刘刚、龚明昊、官天培、谌利民、李惠鑫、张翼、周天元摘要: 旅游活动及伴随的人流、车流逐渐成为野生动物的主要干扰源,威胁着濒危物种的繁殖和生存。准确认识旅游活动对野生动物的影响是制定保护对策和提高保护成效的基础,但生态学领域有关旅游对野生动物影响的量化研究还比较少,可借鉴的评估方法仍较为缺乏。本研究比较唐家河国家级自然保护区旅游开发前(2000年)和开发后(2012年)大熊猫(Ailuropoda melanoleuca...
    2023-03-20
  • 亚高山森林林窗大小对凋落叶木质素降解的影响
    作者: 吴庆贵、谭波、杨万勤、吴福忠、何伟、倪祥银摘要: 木质素降解是认识高寒森林凋落物分解过程的关键环节,可能受到林窗大小及其在不同季节水热环境的影响。采用分解袋法,研究了川西亚高山森林不同面积大小林窗下红桦(Betula albosinensis)和岷江冷杉(Abies faxoniana)凋落叶在初冻期、深冻期、融化期、生长季节初期、生长季节中期和生长季节后期的木质素分解动态特征。研究结果表明,采样时间和林窗面积大小对两种凋...
    2023-03-20
  • 长江上游流域水电开发现状与存在的问题
    作者: 姚磊、陈盼盼、胡利利、李亦秋摘要: 流域水利开发促进了流域经济社会快速发展,也对流域生态系统产生了各种负面影响。长江流域的水电开发已从三峡上溯到金沙江及其它上游支流。该文在大量文献调研的基础上,对长江上游流域水电开发现状进行梳理,采用excel统计软件和ArcGIS地理信息系统软件,以统计图表形式予以清晰表达。研究表明:长江上游流域水电开发规模大、梯级密、水坝高,举世罕见。由于政出多头,加上急功近利,...
    2023-03-20
  • Artificial asymmetric warming reduces nectar yield in a Tibetan alpine species of Asteraceae
    作者: Junpeng Mu, Youhong Peng, Xinqiang Xi, Xinwei Wu, Guoyong Li, Karl J. Niklas, Shucun SunAbstract: Background and Aims Asymmetric warming is one of the distinguishing features of global climate change, in which winter and night-time temperatures are predicted to increase more than summer and diurnal temperatures. Winter warming weakens vernalization and hence decreases the potential to flo...
    2023-03-20
  • Breeding Biology of the Upland Buzzard (Buteo hemilasius) on the Tibetan Plateau
    作者: Wei Chen, Lichun Jiang, Zhangqiang You, Mao ChenKeywords: Upland Buzzard, Buteo hemilasius, breeding, conservation, reproductive rate, Tibetan plateauDOI: 10.3356/JRR-14-104.
    2023-03-20
  • Carbon, Nitrogen and Phosphorus Stocks in Soil Organic Layer as Affected by Forest Gaps in the Alpine Forest of the Eastern Tibet Plateau
    作者: Bo Tan, Wanqin Yang, Xiangyin NiAbstract: Carbon (C) and nutrients storages in soil organic layer play an important role in forest productivity in the alpine-gorge area. However, forest gaps during forest regeneration could regulate carbon and nutrients stocks in soil organic layer by controlling hydro-thermal environment conditions, but little information has been available on it. Theref...
    2023-03-20
  • Complete mitochondrial genome sequence of the Sichuan digging frog Kaloula rugifera (Anura: Microhylidae)
    作者: Lichun Jiang, Li Zhao, Xiaoling Shuai, Zhilin Ren, Wei ChenAbstract: The Sichuan Digging Frog (Kaloula rugifera) belongs to the family Dicroglossidae, which is endemic to northeastern Sichuan and southernmost Gansu provinces, in southwestern China. In this study, the complete mitochondrial genome of K. rugifera was sequenced. The mitogenome was 17 074 bp in length, consisting of 13 prote...
    2023-03-20
  • First report of Chilli ringspot virus infection of Solanum xanthocarpum in China.
    作者: Jinyao. Hu, Jian Liu, Dongzhou Deng, Wuxian YanAbstract: Solanum xanthocarpum (yellow-berried nightshade) is a common weed in southwest China. In august 2014, two S. xanthocarpum plants with leaves displaying ringspots were observed near Mianyang (Sichuang province, China). Total RNAs was extracted from symptomatic and symtomless leaves using Trizol (Invitrogen, USA), and first strand cDN...
    2023-03-20
  • Insect responses to host plant provision beyond natural boundaries: Latitudinal and altitudinal variation in a Chinese fig wasp community
    作者: Rong Wang, Stephen G. Compton, Rupert J. Quinnell, Yanqiong Peng, Yan ChenAbstract: Many plants are grown outside their natural ranges. Plantings adjacent to native ranges provide an opportunity to monitor community assembly among associated insects and their parasitoids in novel environments, to determine whether gradients in species richness emerge and to examine their consequences for ...
    2023-03-20
  • Isolation and characterization of 18 microsatellite loci in the Chinese Noctule bat, Nyctalus plancyi
    作者: Hao Liu, Yujie Ran, Hongyan Shi, Xiaodong Jia, Lin ZhaoAbstract: Nyctalus plancyi is an endemic species restricted to China. Its population is declining drastically, because of habitat loss. Here, we describe 18 microsatellite loci that were isolated from N. plancyi. All loci were highly polymorphic. The number of alleles per locus ranged from 5 to 11. The observed and expected heterozygo...
    2023-03-20
  • MET18 Connects the Cytosolic Iron-Sulfur Cluster Assembly Pathway to Active DNA Demethylation in Arabidopsis
    作者: Chengguo Duan, Xingang Wang, Kai Tang, Huiming Zhang, Satendra K Mangrauthia, Mingguang Lei, Chuan-Chih Hsu, Yueh-Ju Hou, Chunguo Wang, Yan Li, W. Andy Tao, Jian-Kang ZhuAbstract: DNA demethylation mediated by the DNA glycosylase ROS1 helps determine genomic DNA methylation patterns and protects active genes from being silenced. However, little is known about the mechanism of regulation o...
    2023-03-20
  • Nature reserve requirements for landscape-dependent ungulates: The case of endangered takin (Budorcas taxicolor) in Southwestern China
    作者: Tianpei Guan, Fang Wang, Sheng Li, William J. McSheaAbstract: Large ungulates commonly perform seasonal or annual movements that encompass considerable land area and various habitat types. Effective conservation of these species relies not only on insights on their basic ecology, but also an understanding on their requirements to move across landscapes. To determine the key landscape char...
    2023-03-20
  • New Process of Preparing Manganese Tetroxide from Flue Gas DesulPHuriSation with Waste Dry Battery
    作者: Bo Yu, Yongjia Lei, Zhengshan Li, Zhengwen HuangAbstract: The present study was based on the current situation that traditional waste battery recycling technology was complex, high-cost and not appropriate with the actual situation. Besides that, the process of preparing manganese tetroxide (Mn3O4) was high-cost, with high energy consumption, and no effective measures to avoid emission of...
    2023-03-20
  • Prehibernation Energy Storage in Heilongjiang Brown Frogs (Rana amurensis) from Five Populations in North China
    作者: Wei Chen, Tianpei Guan, Lina Ren, Dujuan He, Ying Wang, Xin LuAbstract: Energy storage is an important component in the life history of species that directly influences survival and reproduction. The energetic demands of amphibian reproduction can differ between the sexes, with environmental conditions, reproductive pattern or process of the species, and depending upon the timing of breed...
    2023-03-20
  • Reproductive ecology of Sichuan digging frogs (Microhylidae: Kaloula rugifera)
    作者: Wei Chen, Lina Ren, Dujuan He, Ying Wang, David PikeAbstract: We investigated the reproductive ecology of Sichuan digging frog (Microhylidae: Kaloula rugifera) in Mianyang, China during the wet season (from May to Septemper) of 2013. Male K. rugifera first appeared at temporary ponds following the first heavy rain of the wet season and initiated calling. Male frogs formed choruses through...
    2023-03-20
  • The complete mitochondrial genome sequence ofthe Xizang Plateau frog, Nanorana parkeri (Anura:Dicroglossidae)
    作者: Lichun Jiang, Qiping Ruan, Wei ChenAbstract: The Xizang Plateau frog (Nanorana parkeri) belongs to the family Dicroglossidae, whichdistributes in southern and eastern Xizang, southern-most Qinghai in China, high elevations of north-central Nepal, Himalayan Bhutan, northeastern Kashmir and India. In this study, the complete mitochondrial genome of N. parkeri was sequenced. The mitogenome w...
    2023-03-20
  • The fig wasp followers and colonists of a widely introduced fig tree, Ficus microcarpa
    作者: Rong Wang, Robert Aylwin, Louise Barwell, Xiaoyong Chen, Yan Chen, Lien-Siang Chou, James Cobb, Daniel Collette, Lamara Craine, Robin M. Giblin-Davis, Salah Ghana, Maximilian Harper, Rhett D. Harrison, John R. McPherson, Yanqiong Peng, Rodrigo A.S. Pereira, Alfredo Reyes-Betancort, Lillian J.V. Rodriguez, Emily Strange, Simon van Noort, Huiwen Yang, Hui Yu, Stephen G. ComptonAbstract: 1. ...
    2023-03-20
  • 不同土地利用方式对大型土壤动物群落结构的影响
    作者:杨丽红,石红艳,游章强,唐中海,刘昊,贾小东摘要:【目的】研究不同土地利用方式对大型土壤动物群落结构的影响。【方 法】野外手拣法采集大型土壤动物,运用Shannon-wiener多样性指数 H′、Pielou均匀性指数J、Simpson优势度指数C、Margalef丰富度指数D及密度-类群指数DG描述土壤动物群落结构特征,利用SPSS16.0对数据进行分析。【结果】共捕获大型土壤动物181只,隶属25个类群,其中小蚓类和膜翅目为优势类群;大型...
    2023-03-20
  • 大熊猫保护区社区管理模式的现状与发展
    作者:傅之屏、谌利民、杨远兵、陈伟、刘雷、余波、刘昊、何万红摘要:保护区的建立对大熊猫的保护发挥了有效作用,但却限制了社区对资源的使用。20世纪80年代引进的“社区共管”模式,在一定程度上弥补了保护区封闭式管理的弊端,促进了生态保护与社区经济的协调发展。而大熊猫保护区大多位于中西部偏远贫困山区,对生态干扰比较大的贫困社区却基本没有被纳入社区共管试点范围。作者在20年岷山保护区社区调研资料的基础上,参...
    2023-03-20
  • 颠茄植株再生体系的建立
    作者:邹利娟、吴庆贵、谢沐杉、刘丹丽、罗明华摘要:以颠茄种子萌发的无菌苗为试材,采用组织培养方法,以MS为基本培养基,研究IAA、NAA、6-BA、KT对愈伤组织诱导及分化的影响,探索适宜颠茄愈伤组织诱导和分化的培养基。结果表明:在MS+KT 0.5mg/L+6-BA 1.0mg/L和MS+KT 1.0mg/L+6-BA 0.5mg/L培养基上,愈伤诱导率较高达100%,KT、6-BA添加生长素配比诱导愈伤组织效果不佳。KT单独诱导的愈伤组织宜在20d后转接,KT和6-BA配合使...
    2023-03-20
  • 果园-交错带-针叶林秋季大型土壤动物群落结构及时间动态
    作者:杨丽红摘要:对四川绵阳市果园、针叶林及其交错带三种生境的秋季大型土壤动物群落结构特征及时间动态进行了研究。采用手拣法分离大型土壤动物,根据《中国土壤动物检索图鉴》鉴定土壤动物标本。共获得大型土壤动物标本762只,隶属23个类群,其中小杆目 Rhabditida、正蚓目 Lumbricida、等翅目 Isoptetra 及蜘蛛目 Araneae 为本研究优势类群 。各生境中,果园的大型土壤动物最丰富,捕获 460只,隶属17个类群,其中小杆目...
    2023-03-20
  • 片口自然保护区不同海拔团竹克隆生长研究
    作者:刘美、张涛、谭永燕、刘兰娇、马李红摘要:通过对四川省北川县片口自然保护区不同海拔梯度下团竹的分株形态特征进行调查,研究其克隆生长特征及克隆繁殖的大小依赖关系。结果表明:母株高度、当年生立竹生物量及高度、间隔子直径、比间隔子长、间隔子分枝强度随海拔的改变均有显著性变化;母株、间隔子的生物量受海拔影响不明显。在各海拔环境中,母株大小均显著影响间隔子大小,并通过间隔子的作用显著影响当年生立竹的...
    2023-03-20
  • 首都生态圈生态功能分区与评价
    作者:鲁春霞、李亦秋、闵庆文、张彪、李娜、孙艳芝、张静摘要:受自然与人为的双重作用,北京面临着一系列生态环境问题,其中水资源短缺、空气污染、风沙肆虐更是因危害严重、涉及面广而备受人们关注。对于这些区域性生态问题,远不是北京一个城市所能够独立解决,需要根据其形成的原因,打破行政界线,明确维持城市新陈代谢的生态圈,并制定相应的生态环境联防控制对策。本文在课题组所划定的首都生态圈的基础上,基于“生态...
    2023-03-20
  • 四川羚牛春季地形选择特征的初步研究
    作者:官天培、谌利民、郑维超、陈万里、宋延龄摘要:地形是动物栖息地中非常稳定的环境因素。了解有蹄类特殊时期对地形的偏好,既有助于揭示动物行为策略形成的机制,又有助于我们实施保护和管理。本文对羚牛(Budorcas taxicolor tibetana)春季地形选择特征进行了初步探讨,数据来自于4只佩戴GPS无线电颈圈的羚牛3月中旬至4月中旬的定位数据。通过对羚牛活动位点与可选择地形的7个地形因素(坡度、坡向、坡位、海拔、地形起...
    2023-03-20
  • 四川羚牛的生态和保护研究进展
    作者:官天培、唐中海、游章强、刘昊、赵玲摘要:四川羚牛是分布于四川与甘肃南部,现存种群数量最大的羚牛亚种,被国际自然保护联盟(IUCN)列为易危,是我国1级重点保护野生动物。该文从分布、种群、栖息地、行为节律、迁移、保护等方面概述了四川羚牛的生态习性,并提出了进一步的研究方向和保护建议。关键词:扭角羚;四川;生态学;保护生物学;分布;行为DOI: 10.5846/stxb20140304037
    2023-03-20
  • 四川省不同种质金银花绿原酸含量的比较
    作者:罗明华、谢天资、张卢水、阮期平、邹丽娟、刘玉琴、姜银摘要:为了为四川省引进和培育金银花品种提供依据,采用高效液相色谱法,比较不同品种金银花的绿原酸含量。结果表明,从山东省引进的九丰一号、大毛花和从河南省引进的豫封一号的绿原酸含量分别为3.72%、3.15%、3.27%,从重庆市引种至四川省江油市、南江县的渝蕾一号的绿原酸含量分别为7.12%、6.94%它们与原产地没有明显的差异;四川省的细毡毛忍冬中的绿原酸含量高...
    2023-03-20
  • 四川省耕地生态系统服务价值估算
    作者:王建华、李亦秋摘要:生态系统服务研究是当前生态学与生态经济学研究的热点问题之一,目前直接针对耕地生态系统服务价值的研究正在越来越受到重视。该文对四川省 2011 年耕地生态系统的服务运用市场价值法、替代价格法进行了经济价值的估算。结果表明:四川省耕地生态系统服务正价值 2261.72 亿元,包括农产品服务价值、耕地固碳造氧价值、农作物净化大气环境服务价值和耕地保持养分循环服务价值;负价值 66.63 亿元,主...
    2023-03-20
  • 唐家河国家级自然保护区扭角羚环境容纳量
    作者:官天培、谌利民、符建荣、宋延龄摘要:扭角羚(Budorcas taxicolor)是唐家河自然保护区主要保护对象之一,在近年的监测线路上有较多死亡记录。疾病和饥饿均有可能导致扭角羚异常死亡并与种群数量过大而导致的密度制约效应相关。因此,为了评价唐家河扭角羚的种群数量是否达到了饱和状态,自2012年12月~2014年10月,我们对唐家河扭角羚的种群现状及环境容纳量进行了调查和分析。结果显示,唐家河扭角羚冬季适宜栖息地中6...
    2023-03-20
  • 唐家河自然保护区旅游线路鸟类多样性研究术
    作者:官天培、胡婧、朱磊、阙品甲、谌利民、陈万里摘要:2012年8-10月,对四川省唐家河国家级自然保护区的4条旅游线路进行了鸟类多样性调查。4条旅游线共调查鸟类103种,隶属于9目28科62属。Shannon—Wiener多样性指数最高的是红石河与摩天岭线路,Simpson多样性指数最高的是红石河线路。国庆节前、后各条线路鸟类响应模式不同,可能是各线路旅游特征和干扰要素不同所致。鸟类是监测环境变化的良好指示,建议加强自然保护区旅...
    2023-03-20
  • 小麂秋季利用人工盐场的节律
    作者:官天培、龚明昊、胡 婧、仇 剑、谌利民、陈万里、郑维超、宋延龄摘要:舔食盐分是野生动物的常见习性,但针对具体物种的研究较少。我们于 2013年秋季(9 ~ 10月份)利用4台红外触发相机在唐家河国家级自然保护区对小麂(Muntiacus reevesi)利用人工盐场的时间格局进行了初步研究。共收集照片记录 398 条,其中可鉴别性别的记录288条。结果显示,小麂日均访问盐场(12.97 ± 2.14)次,舔盐高峰出现在8:00 ~ 9:00时以及14:...
    2023-03-20
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