摘要
基于流域生态系统健康理论,针对新疆独特的自然环境特征,建立新疆某河流域生态健康评价指标体系,并基于熵权法评价了流域生态健康状况。结果表明:流域不同区域生态健康状态为:上游(0.5586)>中游(0.4566)>下游(0.4136),熵权综合健康指数最低的为流域中游的单元6(0.3704),最高的为上游的单元5(0.6595)。研究表明该流域特有性或指示性物种保持率、大型底栖动物多样性综合指数较低和土壤保持功能指数较低,水资源开发利用强度较高和河道连通性较好,流域生态健康状况整体良好。
based on the theories of watershed ecological system health and the unique characteristics of natural environment in Xinjiang, an ecological health evaluation index system for a watershed system in Xinjiang has been established and the ecological health status of the watershed has been evaluated based on entropy weight method. The results indicate that the status of the ecological health in different areas of the watershed is as foUows： upstream （0.5586） 〉 midstream （0.4566） 〉 downstream （0.4136）, unit 6 （0.3704） located in the midstream of the watershed has the lowest entropy weight comprehensive health index is and unit 5 （0,6595） located in the upstream has the highest entropy weight comprehensive health index. The studies show that in this watershed system, the conserving rate of specific or indicative species, comprehensive index of macrobenthos diversity and index of soil conservation function are relatively low, the degree of water resources development and utilization is high, the river channel connectivity is high and the overall ecological health status of the watershed is good.
出处
《新疆环境保护》
2015年第4期39-43,51,共6页
Environmental Protection of Xinjiang
基金
新疆环境保护科学研究院创新基金项目(201505)
新疆维吾尔自治区自然科学基金项目(2013211B44)
关键词
流域生态系统
健康评价
熵权法
watershed ecological system
health evaluation
entropy weight method
