渭河宝鸡段2016-2021年水环境质量评价研究

Assessment and analysis on water environment quality of Baoji section of Weihe River from 2016 to 2021

评价渭河宝鸡段2016-2021年水环境质量及变化趋势,提出渭河流域水环境保护的思路对策。使用单因子评价法、断面类别比例法、组合类别比例法和模糊综合评价等方法,对渭河宝鸡段水质开展定性评价、量化排序和变化趋势分析。渭河宝鸡段2018年起达到了Ⅲ类水并保持在Ⅲ类或者更好类别,2016-2021年整体呈好转趋势,水质由好到差排序为2020、2021、2019、2018、2017和2016年。渭河宝鸡段水质“十三五”时期明显好转,建议综合施策推动“十四五”持续稳定向好。本研究方法是判断河流健康状况并实现河流水生态环境复苏的关键环节,具有推广应用价值。

This study put forward the ideas and countermeasures of water environment protection in Weihe River basin to evaluate the water environment quality and change trend of Baoji section of Weihe River from 2016 to 2021.Qualitative evaluation,quantitative ranking and change trend analysis of water quality in Baoji section of Weihe River are carried out by using single factor evaluation,section category proportion method,combined category proportion method and fuzzy comprehensive evaluation methods.Since 2018,Class IV water has been eliminated in Baoji section of Weihe River and kept at ClassⅢor better.The overall change trend from 2016 to 2021 is obviously improved.The water quality from good to bad is ranked as 2020,2021,2019,2018,2017 and 2016.The water quality in Baoji section of the Weihe River improved significantly during the 13th Five-Year Plan period.It is suggested that comprehensive measures be taken to promote the water quality of the Weihe River to remain stable and good during the 14th Five-Year Plan period.This research method is the key link to judge the river health condition and realize the recovery of river water ecological environment,and has the popularizing and applying value.