Spatial-temporal differentiation and influencing factors of rural settlements in mountainous areas: an example of Liangshan Yi Autonomous Prefecture, Southwestern China

作     者：WANG Yumeng DENG Qingchun YANG Haiqing LIU Hui YANG Feng ZHAO Yakai WANG Yumeng;DENG Qingchun;YANG Haiqing;LIU Hui;YANG Feng;ZHAO Yakai

作者机构：School of Geographical SciencesChina West Normal UniversityNanchong 637009China Sichuan Provincial Engineering Laboratory of Monitoring and Control for Soil Erosion in Dry ValleysChina West Normal UniversityNanchong 637009China Liangshan Soil Erosion and Ecological Restoration in Dry Valleys Observation and Research StationXide 616753China 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2024年第21卷第1期

页      面：218-235页

核心收录：

学科分类：060201[历史学-历史地理学] 12[管理学] 120203[管理学-旅游管理] 1202[管理学-工商管理] 06[历史学] 07[理学] 070502[理学-人文地理学] 08[工学] 0705[理学-地理学] 0833[工学-城乡规划学] 0602[历史学-中国史] 083302[工学-城乡规划与设计] 

基　　金：funded by the National Natural Science Foundation of China (Grant Nos. 41971015) Doctoral research program of China West Normal University (Grant Nos.19E067) 

主　　题：Rural settlements Location entropy Geographical detector Spatiotemporal differentiation Influencing factors 

摘      要：Rural settlement is the basic spatial unit for compact communities in rural area. Scientific exploration of spatial-temporal differentiation and its influencing factors is the premise of spatial layout rationalization. Based on land use data of Liangshan Yi Autonomous Prefecture(hereinafter referred to as Liangshan Prefecture) in Sichuan Province, China from 1980 to 2020, compactness index, fractal dimension, imbalance index, location entropy and the optimal parameters-based geographical detector(OPGD) model are used to analyze the spatial-temporal evolution of the morphological characteristics of rural settlements, and to explore the influence of natural geographical factors, socioeconomic factors, and policy factors on the spatial differentiation of rural settlements. The results show that:(1) From 1980 to 2020, the rural settlements area in Liangshan Prefecture increased by 15.96 km^(2). In space, the rural settlements are generally distributed in a local aggregation, dense in the middle and sparse around the periphery. In 2015, the spatial density and expansion index of rural settlements reached the peak.(2) From 1980 to 2020, the compactness index decreased from 0.7636 to 0.7496, the fractal dimension increased from 1.0283 to 1.0314, and the fragmentation index decreased from 0.1183 to 0.1047. The spatial morphological structure of rural settlements tended to be loose, the shape contour tended to be complex, the degree of fragmentation decreased, and the spatial distribution was significantly imbalanced.(3) The results of OPGD detection in 2015 show that the influence of each factor is slope(0.2371) traffic accessibility(0.2098) population(0.1403) regional GDP(0.1325) elevation(0.0987) poverty alleviation(0). The results of OPGD detection in 2020 show that the influence of each factor is slope(0.2339) traffic accessibility(0.2198) population(0.1432) regional GDP(0.1219) poverty alleviation(0.0992) elevation(0.093). Natural geographical facto