Water-quality Monitoring and Protection Measures of Huanlong Lake Reservoir

According to monitoring 15 indexes including Total Nitrogen,Total Phosphorus,Biochemical Oxygen Demand of Huanlong Lake Reservoir from 2011 to 2013,and analysing the water quality change trend with the comprehensive eutrophication state index in nearly 3 years,the results indicated that: the water quality of Huanlong Lake Reservoir was basically up to the standard II of Environmental quality standards for surface waterand it was fairly good,TN and TP exceeded that standard; water quality from 2011 to 2013 got worse year by year,water quality of the reservoir downstream better than that of the upstream; the degree of eutrophication was mesotropher and the reservoir had eutrophication trend. Reservoir pollution sources were analyzed and some protection measures about Huanlong Lake Reservoir were put forward considering the social and economic regulation,control of water pollution,ecosystem regulation and ecologicalsecurity management these four aspects.