五里湖富营养化及治理对策研究

分析了五里湖水体、底泥的氮、磷含量的变化趋势，并根据富营养评价等级判定了五里湖的富营养化程度．根据测得的数据，五里湖TP含量为0．099mg／L，属于Ⅳ类；TN含量为5．01mg／L．属V类：叶绿素和透明度分别为0．014mg／L和40-60cm，分别属于Ⅳ类和V类；CODMn含量为5．47mg／L，属于重富营养化。最后，基于五里湖的特点提出了鱼类防治、传统植物防治、生态清淤、调水工程和生态浮床技术等治理措施。

The Research of Eutrophication of the Lake Wuli and Its Control Measures

The changing trend, concerning contents of nitrogen and phosphorus, in water and sediments of the Lake Wuli during recent decades were analyzed. The status of eutropication of the Lake Wuli was evaluated by the water quality guideline. According to measured data, the water quality is in Level IV, its TP 0.099 mg/L and in Level V, TN 5.01 mg/L, respectively. Its chlorophyll is 0.014 mg/L, in Level IV, CODMn 5.47 mg/L, implicating a high level of nutrients. Finally, some measures for the eutrophication treatment are put forward based on conditions of the Lake Wuli.