2016—2022年京杭运河丹阳段水质变化趋势分析

Trend Analysis of Water Quality in Danyang Section of Grand Canal from 2016—2022

以京杭运河丹阳段为研究对象,根据2016—2022年京杭运河丹阳段5个控制断面每月的监测数据,利用单因子评价法、综合污染指数法、Spearman秩相关系数法,分析京杭运河丹阳段水质变化趋势。结果表明:“十三五”以来,随着水污染防治工作的大力开展,京杭运河丹阳段的水质明显好转。通过对京杭运河水环境质量和变化趋势进行分析评价,为其水环境改善及污染防治提供依据。

Taking the Danyang Section of the Grand Canal as the research object,based on the monthly monitoring data of fi ve control sections of the Danyang Section of the Grand Canal from 2016—2022,the variation trend of water quality in the Danyang Section of the Grand Canal was analyzed by single factor evaluation,comprehensive pollution index and Spearman rank correlation coeffi cient.The results show that the water quality of Danyang section has improved signifi cantly with the vigorous development of water pollution prevention and control since the“13th Five-Year Plan”.Through the analysis and evaluation of the water environment quality and change trend of the Grand Canal,it provides the basis for the improvement of the water environment and the prevention and control of pollution.