泰湖夏季浮游动物多样性及水质评价

Zooplankton Diversity and Water Quality Assessment in Tai Lake in Summer

摘要: 为了解泰湖夏季浮游动物多样性及水质状况，本次调查在泰湖国家湿地公园内共设置了8个采样点进行样品采集与鉴定，并利用生物多样性指数进行水质评价。研究结果如下：此次调查在泰湖共鉴定出浮游动物31属52种，其中原生动物10种，轮虫26种，枝角类9种，桡足类7种。丰度为360.05~960.05，生物量为1.67~3.24 mg/L。Shannon-Wiener多样性指数为1.58~3.32，Pielou均匀度指数为0.32~0.46。通过对浮游生物生物群落结构的调查及生物多样性指数的分析对水质状况进行了综合评价，结果表明夏季泰湖水质处于中度污染，因此，要持续跟进泰湖湖水的污染治理和生态保护。

Abstract: To understand the zooplankton diversity and water quality in Taihu Lake in summer, 8 sampling sites were set up in Taihu National Wetland Park for sample collection and identification, and the water quality was evaluated by biodiversity index. The results are as follows: 52 species of zooplankton belonging to 31 genera were identified, including 10 protozoa, 26 rotifers, 9 cladophora and 7 copepods. The abundance was 360.05~960.05, and the biomass was 1.67~3.24 mg/L. Shannon-wiener diversity index was 1.58~3.32, and Pielou evenness index was 0.32~0.46. Based on the investigation of plankton community structure and the analysis of biodiversity index, the water quality of Lake Tai was comprehensively evaluated. The results showed that the water quality of Lake Tai was moderately polluted in summer. Therefore, we should continue to follow up the pollution control and ecological protection of Lake Tai.