乐清市淡溪水库水质分析及富营养化评价  

Water Quality Analysis and Eutrophication Assessment for Danxi Reservoir of Yueqing

作　　者：秦永泰 QIN Yongtai(Yueqing Water Conservancy Construction&Management Center,Yueqing 325600,Zhejiang,China)

机构地区：[1]乐清市水利建设和管理中心,浙江乐清325600

出　　处：《浙江水利科技》2024年第5期29-35,共7页Zhejiang Hydrotechnics

摘　　要：为了客观全面评价分析淡溪水库水环境质量,采用单因子评价法、熵权-TOPSIS模型、综合营养状态指数对淡溪水库的水质和富营养程度进行分析,并采用相关性分析法和主成分分析法进行污染源解析。结果表明:淡溪水库水质整体良好,营养化程度为中营养,水体具有较强的自净能力;采用主成分分析法从10项水质指标提取5个主成分,可反映水库水质86.583%的信息,影响水质的主要因素为有机污染物、氮磷营养盐;TP和TN浓度超Ⅱ标准的原因是外源污染引起浮游植物大量繁殖导致,应采取氮磷减量措施,提升水库水质。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.

关 键 词：淡溪水库 水质分析 营养化评价 TOPSIS模型 

分 类 号：X522[环境科学与工程—环境工程]