基于PSR模型的杭州市生态安全评价  

Ecological Security Assessment of Hangzhou by PSR Model

作　　者：吕文利[1] 刘玲[1] 翟亚琪[1] 

机构地区：[1]华东师范大学资源与环境科学学院,上海200241

出　　处：《安徽师范大学学报（自然科学版）》2013年第5期489-492,共4页Journal of Anhui Normal University(Natural Science)

摘　　要：随着经济的发展,生态安全问题日益突出.城市作为人口高度集聚的生态系统,其生态系统的安全性更加脆弱,因此,探讨城市生态安全问题也尤为重要.运用PSR(压力-状态-响应)模型建立了城市生态安全评价指标体系,并运用熵值法确定指标权重.以杭州市为例,分析了2001年至2012年杭州市的生态安全状况,指出影响杭州市生态安全水平的主要因素.评价结果表明,杭州市的生态安全状况总体呈安全状态,但仍然面临较严峻的挑战.The problem of the ecological security becoming more and more sharply with the economic development as the highly concentrated ecosystem of the population,the urban ecosystem is more vulnerable.Therefore,the study of urban ecological security issues is particularly more important.This paper established the index system of ecological security assessment based on the PSR（pressure-state-response） model.The weight of index was determined based on entropy method.Taking Hangzhou city as an example,the paper analyzed the ecological security status of Hangzhou city from 2001 to 2012,pointed out the main factors influencing the level of Hangzhou city ecological security.From the evaluation result,the average urban ecological security status in Hangzhou city was staying security,but it is still facing a severe challenge.

关 键 词：生态安全 PSR模型 熵值法 

分 类 号：X826[环境科学与工程—环境工程]