Status Evaluation of Water Eutrophication in Menlou Reservoir and Its Countermeasures

Based on the measures of water quality index in Menlou reservoir in 2004,the indexes of chlorophyl-a,total phosphorus,total nitrogen,permanganate value and transparency,which were as the tokens of water eutrophication,were used to evaluate and analyze Menlou Reservoir water eutrophication by means of quantitative analysis.The results showed that the entire Menlou reservoir was in the state of medium nutrition,the pollution rate of the total nitrogen shared in 39.2%,thereby the total nitrogen was the most dominating polluter.Furthermore,the cause of the pollution leading to the reservoir eutrophication had been found,the leading pollution source was surface source pollution.Finally,the countermeasures of controlling Menlou Reservoir eutrophication were put forward.