基于PSR-TOPSIS模型的闽侯县生态安全动态评价  

Assessment on the Ecological Security of Minhou County By PSR-TOPSIS Model

作　　者：许红红[1] 李小梅[1] 张江山[1] 吴明珠[1] 

机构地区：[1]福建师范大学环境科学与工程学院,福州350007

出　　处：《亚热带资源与环境学报》2013年第2期72-79,共8页Journal of Subtropical Resources and Environment

基　　金：欧盟第七框架项目:Integrated geo-spatial information technology and its application to resource and environmental management towards the GEOSS(IGIT:247608);福建省国际合作重点资助项目:多尺度生态资产遥感综合测量技术研究(2009I006);福建省省外专局重点项目:基于GIS和遥感的生态环境尺度定量及其在可持续发展中的应用(SZ2011010)

摘　　要：生态安全是区域可持续发展的基础保障,是生态建设的核心内容.闽侯县是福州城市扩展的重点区域,亦是福建省会福州生态安全的关键保障区域.本研究运用PSR("压力-状态-响应")框架模型构建区域生态安全评价指标体系,选择多目标决策方法熵权"TOPSIS法"(逼近于理想值的排序方法)评价闽侯县2005—2010年的生态安全动态变化特征.结果显示2005—2010年闽侯县生态安全平均水平处于预警状态,闽侯县亟待改变区域发展模式,增强内涵发展刻不容缓;研究发现生态安全等级水平为生态压力-状态-响应的综合作用,生态系统状态与生态安全水平密切相关,而生态压力和生态响应对生态安全水平起着系统动态调节作用.Ecological security is the basic guarantee of regional sustainability and core content of eco-logical construction. As an urban expansion area of Fuzhou, the coo-security of Minhou County is closely related to that of the whole city area. This paper uses PSR （pressure-state-response） model to build up an indicator system for the evaluation of regional eco-security, and applies TOPSIS （Tech-nique for Order Preference by Similarity to Ideal Solution） method to integrate the multi-indicators into a comprehensive index according to entropy values for assessing dynamic eco-seeurity of Minhou from 2005 to 2010. Results show that the average level of Minhou eeo-seeurity during the study period is close to a warning level, meaning that it is now an urgent moment to change the developing mode of the county. It is found that the eeo-seeurity level can be a comprehensive indicator of ecological pressure-state-response.

关 键 词：PSR模型 TOPSIS法 生态安全评价 闽侯县 

分 类 号：X171.1[环境科学与工程—环境科学]