Analysis and Correlation Study on Water Quality Change in Taihu Lake:A Case Study of Changxing Section
With the monitoring data from 2015 to 2022 at six monitoring points as Hexi,Jiapu,Dongcunqiao,Yangjiapu,Xintang and Baoyang River along Changxing Section of Taihu Lake,the principal component analysis was performed,and three pollution indicators,CODMn,NH3-N and TP were selected.The changes of water quality in the last eight years were evaluated by using the rank correlation coefficient method,and with the help of the SPSS software,the pollution indicators of the different monitoring cross-sections were analyzed by the Pearson correlation analysis.The results showed that the water quality was the best in Hexi Section and the worst in Jiapu Section;the fluctuation of water quality was the largest in Xintang Section and the smallest overall in Jiapu Section.There is a certain correlation between the concentrations of pollutant indicators in water bodies,and the correlation is slightly different due to the nature of the water body and the monitoring location,on the basis of which suggestions are made to strengthen the sewage prevention and control.
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