环境治理工程对蠡湖水生态系统健康的影响评估  

Influence Assessment of Environmental Governance Project on Aquatic Ecosystem Health of Lihu Lake

作　　者：杜昀轩[1,2] 姜霞[2] 王雯雯[2] 李佳璐[2] 王书航[2] 

机构地区：[1]西南大学经济管理学院,重庆400715 [2]中国环境科学研究院,环境基准与风险评估国家重点实验室,北京100012

出　　处：《环境工程技术学报》2014年第3期192-198,共7页Journal of Environmental Engineering Technology

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07101-013)

摘　　要：为揭示环境综合整治工程对蠡湖水生态系统健康状况的影响，构建了由理化指标和生态指标组成的水生态系统健康综合评估指标体系，并采用熵权法确定了各指标的权重系数。结果表明，1992―2012年期间，蠡湖水生态系统健康综合指数为21.65~72.74，总体呈先下降后上升趋势，尤其是2003年环境综合整治工程实施以后，健康等级由Ⅳ级“较差”上升到Ⅱ级“好”的状态；空间上呈西蠡湖优于东蠡湖的分布趋势，其中退渔还湖区（A区）最好，接近Ⅰ级“很好”水平，而在工程措施实施较少的D区较差，仍处于Ⅲ级“中等”水平。该评价结果与蠡湖各分区的实际调查情况相符。评价方法可为其他类似湖泊的水生态系统健康评估提供一定的参照。To reveal the influence of the environmental governance project on aquatic ecosystem health of Lihu Lake, an aquatic ecosystem health comprehensive index （EHCI） system was developed by physicochemical indexes and ecological indexes, and weight coefficient of each index was established based on entropy weight method. The results showed that the aquatic EHCI was between 21.65 and 72.74 during 1992-2012, which mainly decreased first and then rose remarkably. The health level increased from grade Ⅳ“poor” in 2003 to gradeⅡ“good” in 2012 after the implementation of environmental governance project since 2003. Spatially, the aquatic ecological health level in West Lihu Lake was better than that in East Lihu Lake, especially in the returning fishery to lake area （Area A）, which was close to gradeⅠ“very good”. However, due to less management engineering, Area D was worse and was still in grade Ⅲ “medium”. The evaluation results conformed to the actual survey results for aquatic ecosystem in each area of Lihu Lake. The method can provide reference for aquatic ecological health evaluation of other similar lakes.

关 键 词：蠡湖 生态健康综合指数 熵权 水生态系统 环境整治工程 

分 类 号：X524[环境科学与工程—环境工程]