四川林业科技2024，Vol.45Issue(5)：10-19,10.DOI:10.12172/202404070001
岷江流域生态脆弱性时空演变及影响因素分析
Analysis on the spatial and temporal evolution and influencing factors of ecological vulnerability in Minjiang River Basin
摘要
Abstract
The Minjiang River Basin,locating in the transition zone on the western edge of the Sichuan Basin,is one of the typical ecological fragile zones in Southwest China.It is very important to explore the spatial and temporal evolution of its ecological environment vulnerability and its influencing factors to maintain the stability of the ecosystems in Sichuan Province.Using the pressure-state-response(PSR)model,remote sensing,meteorological and social statistics data were collected,and the weights were evaluated using the Critic Method-Entropy Value Method,and finally an ecological vulnerability evaluation system for the Minjiang River Basin was constructed.The spatial and temporal evolution characteristics of the ecological environment vulnerability in the Minjiang River Basin from 2012 to 2022 were analyzed,and the influencing factors of the ecological vulnerability of the basin were evaluated by using the geographic detector model.The results showed that:(1)During the study period,the overall vulnerability of Minjiang River Basin increased first and then decreased,and the severe and extremely vulnerable areas expanded first and then shrinked in the middle.Since 2017,the area of mild vulnerability had increased sharply with Chengdu as the center,and the ecological environment of the basin had improved significantly.And it had the spatial distribution characteristics of high-high concentration in the north and low-low concentration in the middle and south.(2)Under the condition of relatively stable policy factors,the main factors affecting the ecological vulnerability of Minjiang River Basin were the average annual precipitation and elevation,and the effects of climatic factors on ecological vulnerability was gradually enhanced.The research results could provide theoretical basis for ecological environment restoration and"Two Mountains"construction in Minjiang River Basin.关键词
生态脆弱性/岷江流域/时空演变Key words
ecological vulnerability/Minjiang River Basin/spatial and temporal evolution引用本文复制引用
李雨露,张继刚..岷江流域生态脆弱性时空演变及影响因素分析[J].四川林业科技,2024,45(5):10-19,10.基金项目
自然资源部国土空间规划监测评估预警重点实验室课题(LMEE-KF2021005) （LMEE-KF2021005）
县域快速发展地区典型村镇建设用地扩张的预测预警方法 （）
