大宁调蓄水库水生态监测成果分析及评价

Analysis and evaluation of water ecological monitoring results of Daning Reservoir

针对我国湖泊富营养化现象频繁出现的问题,本文通过分析大宁调蓄水库2017年水质、水生态监测数据,采用单因子评价法、综合营养状态指数法对水库水质和富营养化状态进行了评价。通过整理分析水生态监测数据,研究了大宁调蓄水库浮游植物群落特征。研究结果表明:大宁调蓄水库2017年水质状况良好,达到地表水Ⅱ类标准,水体处于中营养状态。大宁调蓄水库现状生态结构良好,生物群落稳定,每年须在7—10月重点预防蓝藻水华。

In view of the frequent occurrence of lake eutrophication in China,this paper analyzes the water quality and water ecology monitoring data of Daning Reservoir in 2017,and evaluates the water quality and eutrophication status of Daning Reservoir by single factor evaluation method and comprehensive nutrition status index method.Based on the analysis of the water ecological monitoring data,the phytoplankton community characteristics in Daning Reservoir were studied.The analysis results showed that the water quality of Daning Reservoir in 2017 was good,reaching Class II standard of surface water,and the water body was in a medium nutrition state.The Daning Reservoir has a good ecological structure and stable biological communities,but the prevention ofblue-greeen algaebloom should be emphasized fromJuly to October.