宁夏星海湖湿地水质监测及生态系统健康评估

Research on Water Quality Monitoring and Ecosystem Health Assessment of Xinghai Lake Wetland in Ningxia

在对星海湖湿地湖水水质调查取样分析的基础上,建立湿地生态系统评价指标体系,用PSR模型和AHP分析法对星海湖生态健康状况进行综合分析评价.结果表明,星海湖水体整体污染级别为"轻污染",水质为Ⅵ类;星海湖的营养状态较差,综合营养指数为57.268;星海湖各采样点的浮游植物生物量为6.2～22.3mg/L、平均值为14.71mg/L,浮游动物生物量为0.02～0.06 mg/L、平均值为0.055 7 mg/L,底栖动物生物量平均值为13.55g/m2;星海湖湿地的生态系统健康综合指数为0.228 0,处在不健康状态.

On the basis of investigating sampling analysis on water quality of Xinghai lake wetland,the article established wetland ecosystem assessment index system,and comprehensively analyzed and evaluated its ecological health status with PSR model and AHP analysis method.The result shows that,the overall pollution level of Xinghai lake water is“slight pollution”,and the water quality belongs to categoryⅥ;The nutritional status of Xinghai lake is poor,and the comprehensive nutritional status index is 57.268;The biomass of phytoplankton in the sampling sites of Xinghai lake is 6.2~22.3 mg/L with the average value 14.71 mg/L,the zooplankton biomass is 0.02~0.06 mg/L with the mean value of 0.055 7 mg/L,and the average biomass of zoobenthos is 13.55 g/m^2;the comprehensive index of Xinghai lake wetland ecosystem health is 0.228 0,which is not healthy.