The water pollution and eutrophication were judged by the assessment of hydrobiology with the species and quantity measure and analysis of phytoplankton,zooplankton,bottom dwelling biology and fish.

• 水生生物的评价是通过对浮游植物、浮游动物、底栖生物、鱼类种类和数量变化的测定和分析,判定水体的污染和富营养化状况。