Evaluation and control measures of eutrophication in Jinwei Lake of Baoji

In order to assess the eutrophication level of Jinwei Lake and investigate the reason of the phenomenon,based on the evaluation factors of Chla、TP、TN、CODMn and SD,this article made a comprehensive evaluation analysis on the eutrophication level and the cause of formation.The monitoring results indicated that the water quality of Jinwei Lake is characterized by low diaphaneity,rich source of nutrient salt and relatively small organic pollutants.TLI(∑) is from 32 to 47 in May,45 to 57 in November.In May,the river mouth of Jinling River is at light-eutrophication level while the rest are at mid-eutrophication level.On the basis of research,the paper advanced the control measures of the eutrophication of Jinwei Lake.