Evaluation of Eutrophication of Jiangjiazhai Reservoir

Based on the water quality monitoring data in four quarters of each year in 2014-2018,comprehensive eutrophication level index TLI(∑) and eutrophication level index TLI were used to evaluate the eutrophication of Jiangjiazhai Reservoir in Shidian County,Baoshan.The results showed that Jiangjiazhai Reservoir was at poor nutrition state in 2014-2017.The state of medium nutrition was emerged in 2018.The main pollution index was TN.Its change trend was examined.The eutrophication status showed an upward trend but no significant change in recent 5 years.The water quality was stable.