观音湖富营养化研究

Study on the Eutrophication of Guanyin Lake

为了解观音湖富营养化变化趋势,对观音湖水质进行了连续几年的调查监测,对溶解氧、总磷和总氮等指标进行了系统分析,采用综合营养状态指数对观音湖富营养化现状和水质情况进行了研究。结果表明:观音湖春季呈现富营养化,其余季节水质良好,达到了《地表水环境质量标准》(GB3838-2002)Ⅲ类标准要求;2015年以前,富营养化逐年加重;2015年以来,观音湖及其支流水质逐年改善,早春富营养化程度呈现下降趋势。

In order to master the change tendency of the eutrophication of Guanyin Lake,the waters were investigated and monitored for several years.The dissolved oxygen,total phosphorus and total nitrogen were systematically analyzed.The current situation of the eutrophication of Guanyin Lake and the water quality was studied.The results show that the water quality of Guanyin Lake is good except eutrophicated in spring.It reaches theⅢstandard of Surface Water Environment Quality Standard(GB3838-2002).The tendency of eutrophication has aggravated gradually until 2015.Ever since the year of 2015,the water quality of Guanyin Lake and its tributaries have improved year by year.The early spring eutrophication of Guanyin Lake presents the downward trend.