摘要
为进一步研究湟水流域西宁段干支流水质分布特征及污染状况,对2018年1月至2019年12月逐月西宁市湟水干流及其支流共10条河流24项水质参数进行调查监测,结合近十年历史监测数据分析湟水流域西宁段水质分布特征,并采用单因子评价法和基于主成分分析法赋权的模糊综合评价法综合评估湟水流域西宁段水质污染情况。结果表明:2010-2019年湟水流域西宁段水质整体上呈现出明显好转趋势,水质达到或优于Ⅲ类标准的水质断面从40%上升至80%。水质季节性分布特征受径流的影响明显。通过主成分分析-模糊综合评价结果显示,湟水流域河流污染程度为甘河沟>湟水>南川>北川>沙塘川>小南川>云谷川>药水河>西纳川>拉拉河,水质污染与城镇化发展程度高度契合,结果能更好地为西宁城市河流治理和生态修复提供技术支撑。
In order to further study the water quality distribution characteristics and pollution status of the main and tributaries of the Xining section of the Huangshui River Basin,from January 2018 to December 2019,24 water quality parameters of 10 rivers including the Huangshui Mainstream and its tributaries are investigated month by month. The distribution characteristics of water quality in Xining section of Huangshui River Basin are analyzed based on the historical monitoring data in recent decades. The single factor evaluation method and fuzzy comprehensive evaluation method based on principal component analysis are used to comprehensively evaluate the water pollution in Xining section of Huangshui River Basin. The results show that from 2010-2019 the water quality of Xining section of Huangshui River Basin showed a significant improvement trend on the whole,and Section of water quality that meets or exceeds class Ⅲ standards increased from40% to 80%. The seasonal distribution of water quality was obviously affected by runoff. By means of principal component analysis and fuzzy comprehensive evaluation,the results showed that pollution degree of Huangshui Basin was Ganhegou> Huangshui> Nanchuan> Beichuan>Shatangchuan> Xiaonanchuan> Yunguchuan> Yaoshui River> Xinachuan> Lala River. Water pollution was highly compatible with the degree of urbanization development. The results can better provide technical support for Xining urban river governance and ecological restoration.
作者
贾洁
王司阳
张静萍
JIA Jie;WANG Si-yang;ZHANG Jing-ping(Hydrology and Water Resources Forecast Center of Qinghai Province,Xining 810001,China;School of Water Resources and Hydropower Engineering,Wuhan University,Wuhan 430072,China)
出处
《中国农村水利水电》
北大核心
2022年第8期6-13,共8页
China Rural Water and Hydropower
基金
国家重点研发计划课题项目(2018YFC1508404)
国家自然科学基金项目(51979120)。
关键词
湟水流域
主成分分析
模糊综合评价
水质评价
Huangshui River Basin
principal component analysis
fuzzy comprehensive evaluation
water quality evaluation
