Eutrophication in the Yuyuantan Lake

摘要

Seasonal characteristics of the total nitrogen TN), total phosphorus (TP) and other factors in the sediment and water in the Yuyuantan Lake were analyzed. Correlation among all forms of P was estimated considering the seasonal variations of TP. The result showed that the concentrations of TN and TP are lower in summer and higher in autumn. All nutritional indexes are much higher in the west of lake than that in the east of lake. The study on seasonal occurrence characteristics of N and P provided basis for the evaluation of ecological security in the lake.