Qian lake water system of Nanchang city was selected as the object to evaluate the eutrophication using the for-mula of log power function universality index.At the same time,correlation analysis was conducted to explore the relationship between water quality and environmental factors and water eutrophication level.The results showed that the pollutant content of CODMn,NH3-N,TP,TN,and BOD5 in Qian lake water system of Nanchang City exhibited significant spatial distribution char-acteristics;the water eutrophication index(VE)of Qian lake ranged from 51.34 to 70.52,all of which displayed eutrophication status,and the associations of TN and TP with eutrophication were 0.917 and 0.912,respectively,indicated that nitrogen and phosphorus were the main cause of water eutrophication.The average ratio of nitrogen and phosphorus was 19.57,and the sew-age treatment plant and the pollution from the urban and surrounding areas were the main sources of pollutants in Qian lake water system of Nanchang city.Qian lake water system was researched in order to improve the attention of the water environ-ment in the suburban junction.
关键词
前湖水系/富营养化/氮磷比/污染来源
Key words
Qian lake water system/eutrophication/total nitrogen to total phosphorus ratios/source of pollution
维普
万方数据