摘要
基于压力-状态-响应(Pressure-State-Response,PSR)模型构建三峡水库消落带生态环境综合评价指标体系,结合遥感影像解译与调研数据,应用层次分析法对三峡水库消落带的生态环境综合状况进行评价,度量消落带生态环境综合状况指数(Comprehensive Situation Index,CSI);基于ANOVA分析方法阐述CSI对于河流区段的响应。结果表明,三峡水库消落带总体生态环境综合评价指数为0.47,处于一般等级,三峡水库消落带各区域的生态环境综合指数分布在0.37～0.65范围内,83.3%的区域消落带生态环境综合状况等级为一般;不同区段间消落带生态环境状况存在显著差异(P<0.05),为上游段>中游段>下游段。
Based on the Pressure-State-Response （PSR） model, the index system of eco-environmental assessment of water-level-fluctuating zone in the Three Gorges Area was established. Combined with the remote sensing image interpretation data and survey date, AHP method was applied to evaluate the comprehensive situation of ecological environment. The evaluation result was expressed by the comprehensive situation index （CSI）. Results showed that ： （ 1 ） the comprehensive situation of water-level-fluctuating zone of the Three Gorges Reservoir was in the ＂normal＂ grade with CSI 0.47, and the distribution of CSI in each region or country ranged from 0.37 - 0.65, within which 83.3% was in the ＂normal＂ grade; （2） results of ANOVA analysis revealed that the CSI value of upstream segment was significantly higher than that of downstream segment （P 〈 0.05 ）.
出处
《水生态学杂志》
北大核心
2012年第5期13-19,共7页
Journal of Hydroecology
基金
国家"十二五"水专项课题(2012ZX07104-003)
重庆市自然科学基金重点项目(cstc2012jjB20003)
关键词
三峡水库
消落带
PSR模型
生态环境
综合评价
Three Gorges Reservoir
water-level-fluctuating zone
PSR model
ecological environment
compre- hensive assessment
