作者: Li chen, Qing wang

Abstract: 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 relationship between humans and the land they occupy. Firstly, this paper analyzes the land use change of the mountainous settlements in the upper reaches of the Minjiang River from four aspects: land use change amplitude,single land use dynamics,information entropy and land use transfer matrix. Then, we analyzed the variation characteristic of landscape pattern at patches class level and landscape level by choosing the landscape pattern index as analytical indicators. Finally, we used principal component analysis and multi-regression to derive the relation between land use change and influencing factors. The results show that:(1) The study area was dominated by woodland, grassland and dry land.During the studied period of time(1995-2025),the disorder of the land use system increased and the area tended to develop unevenly. (2) The spatial distribution of landscape elements is unbalanced,the proportion of dominant patch type is decreased, and others increased, patch became ever more diffuse. (3) The main natural influencing forces of land use in mountainous settlements are the sunshine hours, relative humidity and evaporation. And the GDP and per capita GDP are the main factors in economic development.The rapid growth of population, the high-speed development of science and technology and the constant adjustment of national policies are also the main factors of land use change. Understanding the characteristics of land use change and influencing factors in mountainous settlements will help the management authority effectively optimize land resources allocation, increase land utilizes efficiency, and protect the ecological environment.

Keywords: Mountainous settlements, Land use, Spatio-temporal diversity, Infuencing factors

DOI: 10.1007/s12145-021-00627-0