南水北调东平湖水质富营养化变化趋势分析及改善对策

Trend analysis and improvement countermeasures of water quality eutrophication in dongping Lake of South-to-North Water Transfer Project

本文在对东平湖水质进行7年全面监测的基础上,以叶绿素a(chla)、总磷(TP)、总氮(TN)、透明度(SD)和高锰酸盐指数(COD_(Mn))5个指标,对东平湖富营养化状态进行调查和评价。水质监测表明,东平湖水质富营养化程度呈现先好转后有反弹的变化趋势,总体水质较好,富营养化处于中营养水平。根据监测结果提出了东平湖水质富营养化的防治对策。

On the basis of the overall monitoring on the water quality of Dongping Lake which has continued about7years,the thesis ranges over five perspectives including chlorophyll-a(Chla),total phosphorus(TP),total nitrogen(TN),SD and permanganate index.Water quality monitoring shows that Dongping Lake water quality eutrophication degree has improved after the first rebound trend,the overall water quality is better,eutrophication in the middle nutrient level.According to the test results,the countermeasures of water quality eutrophication of Dongping Lake were put forward.