为了了解巢湖东半湖水体富营养化现状，在巢湖东半湖选取3个站点作为采样点，对水体中浮游植物指标和水质指标进行了监测。结果表明，在巢湖东半湖水域浮游植物种类共119种，隶属于8个门，其中硅藻门最多；浮游植物平均密度约为47．36×105个／L，蓝藻门数量占绝对优势，达到水体中浮游植物密度的84．62％。水质监测结果表明，该水域的化学需氧量并不高，说明水体受有机物污染较轻，叶绿素a含量较高，总磷与总氮含量随季节变化明显，水体透明度在2014年变化不大，平均值为0．151 m。对该水域水体富营养化水平进行评价，评价结果表明，巢湖东半湖水域已达到中营养化水平以上。%In order to study the status of eutrophication in Chaohu lake , 3 sites were selected as sampling sites in the eastern half of Chaohu lake , and the phytoplankton and water quality indexes were monitored .The results showed that there were 119 species of phy-toplankton belonging to 8 phyla in which bacillariophyta was the most .The average density of phytoplankton was about 47 .36 ×105 cells/L, and the number of Cyanophyta was dominant in phytoplankton which reached 84.62%in density.Water quality monitoring re-sults showed that the chemical oxygen demand in the water was not high , indicating that the water organic pollution was light .But there was a high Chl-a content , and a obvious changing in total phosphorus and total nitrogen content in seasons .Water transparency in 2014 changed little with the average value of 0.151m.In this study, the eutrophication level of the water was evaluated and the results showed that the quality of water in the eastern half of Chaohu lake has reached the level of middle eutrophication .
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