大渡河泸定县段水环境质量分析OACSTPCD
Analysis of Water Environment Quality in Luding County Section of the Dadu River
掌握大渡河泸定县段水环境质量整体情况和变化趋势对于更好的保护大渡河中游开始段水质,更有针对性的提出水污染防治措施很有必要.以大渡河泸定县段入境上游断面及其出境断面水质的例行监测数据为依据,利用单因子评价法、内梅罗指数法和Spearman秩相关系数法对大渡河泸定县段水质进行分析评价.结果表明2018-2022年,泸定县出境断面水质好于入境上游断面水质,泸定县出境断面水质呈逐年向好的趋势,于2021年水质趋于平稳,其总磷和高锰酸盐指数浓度为丰水期＞平水期＞枯水期,各月份中6-8月水质相对差些.2017-2022年,其出境断面高锰酸盐指数浓度下降趋势具有显著意义.系统地对大渡河泸定段水质情况和变化趋势开展分析,可为地方政府开展大渡河水环境保护工作提供数据支撑.
In order to master the overall water environment quality and trends of the Dadu River in Luding County and better protect the water quality at the beginning of the middle reaches of the Dadu River,it is important to propose more specific water pollution prevention and control measures.Based on routine monitoring data of water quality at the upstream and outlet sections of the Dadu River in Luding County,the single factor index method,Nemerow index method,and Spearman rank correlation coefficient method were used to analyze and evaluate the water quality of the Dadu River in Luding County.The results showed that from 2018 to 2022,the water quality at the exit section of Luding County was better than that at the upstream section of the entry.The water quality at the exit section of Luding County was increasing year by year,and the water quality tended to stabilize in 2021,The concentration of total phosphorus and permanganate index were as follows:wet season＞normal water level period＞dry season,and the water quality in June to August was relatively poor.From 2017 to 2022,the concentration of permanganate index in its exit section showed a significant downward trend.Systematic analysis on water quality and change trends of in Luding county section of the Dadu river can provide data support to local governments to carry out environmental protection work for the Dadu River.
陈雨艳;史箴;余恒;易丹;唐兆军;柳强
四川省生态环境监测总站,成都 610091
环境科学
大渡河水质趋势分析
Dadu Riverwater qualitytrend analysis
《四川环境》 2024 (002)
40-44 / 5
川藏铁路沿线敏感水环境影响的空天地一体化监测方法及技术研究(2022YFS0502).
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