基于DPSIR-SPA的安徽省生态承载力评价

Evaluation of Ecological Carrying Capacity of Anhui Province based on DPSIR-SPA

针对资源日益紧缺以及生态环境逐渐恶化的现状,安徽省生态承载力正面临巨大压力。基于DPSIR模型构建生态承载力综合评价指标体系,利用熵权法和集对分析法(SPA)诊断2008—2017年生态承载力状况,采用最大联系度原则确定安徽省各子系统和综合系统的生态承载力等级。结果表明:2008—2017年安徽省生态承载力经历由临界安全到较安全的过程。其中,响应子系统水平的增长对安徽省生态承载力的贡献最大,压力子系统是制约安徽省生态承载力的主要因素。

In view of the increasingly scarce resources and the gradual deterioration of the ecological environment,the ecological carrying capacity of Anhui Province is facing tremendous pressure.Based on the DPSIR model,a comprehensive evaluation index system for ecological carrying capacity was constructed.The entropy weight method and set pair analysis(SPA)were used to diagnose the ecological carrying capacity status of 2008—2017.The maximum degree of connection principle was adopted to determine the ecological carrying capacity grade of each subsystem and comprehensive system in Anhui Province.The results show that the ecological carrying capacity of Anhui Province experienced a process from critical safety to safer from 2008 to 2017.Among them,the increase in the level of response subsystems has contributed the most to the ecological carrying capacity of Anhui Province,and the pressure subsystem is the main factor restricting the ecological carrying capacity of Anhui Province.