Water Quality Analysis and Eutrophication Assessment for Danxi Reservoir of Yueqing
In order to evaluate and analyze the water environment quality of Danxi Reservoir objectively and comprehensively,apply single factor evaluation method,entropy weight-TOPSIS model and comprehensive nutrient state index method analyze the water quality and nutrient degree of the reservoir.And apply correlation analysis and PCA analyze the pollution sources.The results showed:The water quality of the reservoir is overall good,the degree of eutrophication in Danxi reservoir is moderate,the water in reservoir area has strong self-purification ability.Five principal components were extracted from the 10 water quality index,which explained 86.583％of information of water quality.Organic pollutants,nitrogen and phosphorus nutrients were the major factors influencing the water quality.The concentrations of TP and TN were higher than Ⅱ standard because of External pollution causes phytoplankton proliferation.The measure of nitrogen and phosphorus reduction should be taken to improve the water quality of the Danxi reservoir.
Danxi reservoirwater quality analysiseutrophication assessmentTOPSIS model
万方数据
维普
