贵阳南明河浮游植物调查与水质评价

INVESTIGATION ON PHYTOPLANKTON IN GUI YANG NANMING RIVER WATERSHED AND THE EVALUATION OF ITS WATER QUALITY

通过丰水期、平水期和枯水期3个时期对南明河的浮游植物进行了调查,共鉴定出浮游植物143种,隶属于8门10纲21目34科67属.调查显示:2005～2006年浮游植物以绿藻居多,其次是硅藻和蓝藻.在四个采样点三次采样中,花溪大坝细胞密度最大.通过浮游植物多样性指数、Shannon-Wiener多样性指数和均匀度指数分析,显示南明河水体属于中-重污染型.

By a survey of phytoplankton in the flood season, average water season and the dry season of the Gui Yang Nanming River, phytoplankton 143 species were identified. They belong to 67 genera, 34 families, 21 orders, 10 classes and 8 divisions respectively. The results showed that Chlorophyta were the most important component, followed by Diatoms and Cyanophyceae in the period of 2005 - 2006. In three samples of four places, the cell density of Huaxi Dam is largest. Results based on phytoplankton index, Shannon - Wiener index and Evennes Index Revealed that Nanming River belonged to middle pollution - heavy pollution.