新通扬运河(泰州段)水质变化趋势分析

Analysis on water quality change trend of Xintongyang Canal(Taizhou section)

本文采用时间序列法和季节性Kendall检验法,选取溶解氧、高锰酸盐指数、氨氮和五日生化需氧量指标,对2010—2018年新通扬运河(泰州段)水质变化趋势进行了分析评价。结果显示:总体上新通扬运河(泰州段)水质浓度逐年好转,上游水质优于下游,上游水质浓度较好且年际变化较小,下游水质浓度年际变化幅度较明显。在此基础上分析原因并提出改善水环境质量的措施。

This paper uses time series method and seasonal kendall test method,selects dissolved oxygen,permanganate index,ammonia nitrogen and five-day biochemical oxygen demand index to analyze and evaluate the water quality change trend of Xintongyang Canal(Taizhou section)from 2010 to 2018.The results show that the water quality concentration of Xintongyang Canal(Taizhou section)has improved year by year.The upstream water quality is better than that of the downstream.The upstream water quality concentration is better and its interannual variation is smaller.The interannual variation range of the downstream water quality concentration is obvious.Based on this,the reasons are analyzed and the measures to improve the water environment quality are put forward.