基于SRP模型的安徽省生态脆弱性时空分异及其驱动机制  

Spatio-temporal Differentiation of Ecological Vulnerability and Its Driving Mechanism in Anhui Province Based on SRP Modeling

作　　者：汪勇政 张嘉琦 WANG Yongzheng;ZHANG Jiaqi(School of Architecture and Planning,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学建筑与规划学院,安徽合肥230601

出　　处：《安徽建筑大学学报》2024年第6期23-33,共11页Journal of Anhui Jianzhu University

基　　金：安徽省高校省级自然科学研究项目(2022AH050242)。

摘　　要：安徽省地处长江、淮河中下游,是国家六个一级生态区的重要组成部分,地貌及经济发展差异性较强,深入研究其生态脆弱性时空分异并揭示驱动机制,对区域土地资源合理利用及生态环境保护具有重要意义。研究基于“敏感性-恢复力-压力度”模型(SRP模型),进行2000—2020年安徽省生态脆弱性评估,并探究各影响因素。研究结果表明:1)时间变化上,2000—2020年研究区整体为中度脆弱性,综合指数先上升后下降,于2015年达到峰值。2)空间分布上,研究区生态脆弱性等级呈南高北低、西高东低;2000—2010年间,大部分城市由轻度或中度脆弱恶化至重度脆弱;2010—2020年,轻度脆弱区增多,部分重度脆弱城市转回中度脆弱。3)生态脆弱性是多因素综合作用的结果,高程、干燥度、年降水量等为主要驱动因子。Anhui Province is located in the middle and lower reaches of the Yangtze River and Huai River,and is an important part of the six first level ecological zones in China.The differences in topography and economic development are strong.In depth research on the spatiotemporal differentiation of ecological vulnerability and the revelation of driving mechanisms is of great significance for the rational utilization of regional land resources and ecological environment protection.Based on the Sensitivity Resilience Pressure(SRP)model,this study conducted an ecological vulnerability assessment of Anhui Province from 2000 to 2020 and explored various influencing factors.The research results indicate that:①In terms of temporal changes,the overall vulnerability of the study area from 2000 to 2020 was moderate,with the comprehensive index first increasing and then decreasing,reaching its peak in 2015.②In terms of spatial distribution,the ecological vulnerability level in the study area is high in the south and low in the north,and high in the west and low in the east;Between 2000 and 2010,most cities deteriorated from mild or moderate vulnerability to severe vulnerability;From 2010 to 2020,the number of mildly vulnerable areas increased,and some severely vulnerable cities returned to moderately vulnerable.③Ecological vulnerability is the result of multiple factors,with elevation,dryness,and annual precipitation being the main driving factors.

关 键 词：生态脆弱性 SRP模型 时空分异 地理探测器 

分 类 号：X826[环境科学与工程—环境工程]