2005~2018年涡河玄武河段水质演变趋势分析  

Analysis of water quality evolution trend of Xuanwu section of Guohe River from 2005 to 2018

作　　者：王淑丽 李志萍 赵贵章 姚思雨 袁巧灵 WANG Shuli;LI Zhiping;ZHAO Guizhang;YAO Siyu;YUAN Qiaoling(College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450011,China)

机构地区：[1]华北水利水电大学地球科学与工程学院,河南郑州450011

出　　处：《人民长江》2021年第5期13-17,共5页Yangtze River

基　　金：国家自然科学基金项目(41372260,41202178);中国科学院流域地理学重点实验室开放基金项目(WSG2015004);河南省高校科技创新人才支持计划项目(13HASTIT035)。

摘　　要：水质演变趋势分析是水质研究的基础,也是水质污染防治的有效手段,在水环境研究中具有重要意义。基于涡河流域玄武河段2005~2018年水质指标数据,通过综合污染指数法、模糊综合评价法和灰色关联度评价法,对涡河玄武河段水质进行了综合评价,分析水质中的组分变化特征;采用线性趋势、累积距平法、Mann-Kendall突变检验相结合的方式,识别涡河流域河流2005~2018年水质指标的变化趋势,并进行突变分析。结果表明:2010年前后水质明显好转,水质主要为Ⅱ类和Ⅲ类水,且较稳定;溶解氧总体呈上升的趋势,氨氮、高锰酸盐指数、化学需氧量和总磷含量总体呈下降趋势,且氨氮、高锰酸盐指数和化学需氧量下降趋势显著;各水质指标突变次数和突变时间存在着差异,且集中出现在2008~2013年和2016年。研究结果可为涡河水环境治理提供依据。The analysis of water quality evolution trend is the basis of water quality research,and is also an effective means to achieve water quality pollution prevention and control,which is of great significance in water enviroment research.In this paper,based on the water quality index data of Xuanwu section of the Guohe River Basin from 2005 to 2018,the water quality was comprehensively evaluated through the comprehensive pollution index method,fuzzy comprehensive evaluation method and grey correlation degree evaluation method,and the variation characteristics of components in water quality were analyzed.In addition,the variation trend of water quality index in the Guohe River Basin from 2005 to 2018 were identified by using linear trend method,cumulative anomaly method and Mann-Kendall mutation test.The results showed that before and after 2010,the water quality was improved significantly,the water quality was mainly in class II and class III water-level with relatively stable status;the dissolved oxygen showed an upward trend,the ammonia nitrogen,permanganate index,chemical oxygen demand and total phosphorus content showed a downward trend,and the ammonia nitrogen,permanganate index and chemical oxygen demand decreased significantly;the mutation frequency and time of each water quality index were different,concentrated in 2008~2013 and 2016.The results can provide a basis for the water environment control of the Guohe River.

关 键 词：水质变化 综合污染指数法 Mann-Kendall突变检验 涡河流域 

分 类 号：X522[环境科学与工程—环境工程]