双龙湖枯、丰水期交替期间水质变化评价研究

对双龙湖枯、丰水期交替期浮游藻类种类、数量及总氮、总磷、高锰酸盐指数、叶绿素a、透明度、浊度等指标进行监测分析，从浮游藻类营养分级标准法、优势藻类指示法及生物指标评价法和富营养化综合评价法对双龙湖营养状态进行评价，认为双龙湖丰水期初期水质优于枯水期末期，处于中营养化水平，枯水期末期处于富营养状态。研究评价枯、丰水期的水质变化规律，为加强双龙湖污染防治，改善和保持水环境提供科学依据。

Evaluation of Water Quality in Shuanglong Lake Changing from Rainless Season to Rainfall Season

The species composition and density, the contents of TN, TP, CODMn, Chla, transparency, and turbidity in Shuanglong lake have been evaluated with eutrophication biological evaluation methods, standard method on Phytoplankton eutrophic classes, dominant algae indicating method, biological index evaluation method, and eutrophic synthetical eveluation method. At the beginning of rainfall season, the lake water quality was obviously better than that at the end of rainless season.