Analysis of the nutrient dynamics and eutrophication characters in Xinlicheng reservoir

We analyze the nutrient dynamics and eutrophication features in Xinlicheng reservoir.The variation ranges in CODMn,TN,and TP were 3.4-8.6mg/L,0.48-1.66mg/L,and 0.021-0.096mg/L,respectively.TN and TP concentrations exceeded the threshold for eutmphie state.N/P ratios favored algal growth between July and September.The trophic state of Xinlicheng reservoir was meso-tropher to eutrophic.Significant positive correlations were found between Chlorophyll-a and water temperature,pH,and TP.However low correlations were found between Chlorophyll-a and TN and between Chlorophyll-a and dissolved oxygen.