Temporal and spatial variation characteristics of water quality in Lanzhou and Baiyin section of the Yellow River mainstream from 2010 to 2019

被引：0
|
作者：
Xu F. [1 ]
He L. [1 ]
Wang Y. [1 ]
He C. [1 ]
Niu Y. [1 ]
Liu W. [1 ]
Song W. [1 ]
机构：
[1] Gansu Environmental Monitoring Center, Lanzhou
来源：
Water Resources Protection | 2021年 / 37卷 / 04期
关键词：
Baiyin section of the Yellow River mainstream; Comprehensive pollution index method; Lanzhou section of the Yellow River mainstream; Time series analysis; Water quality;
D O I：
10.3880/j.issn.1004-6933.2021.04.007
中图分类号：
学科分类号：
摘要：
Based on the comprehensive pollution index method, combined with single factor pollution index method, cumulative anomaly method and other statistical analysis methods, the temporal and spatial variation characteristics of water quality of 7 sections in Lanzhou and Baiyin section of the Yellow River mainstream were quantitatively analyzed. The results show that the comprehensive water quality of Lanzhou and Baiyin sections was good from 2010 to 2019, and the comprehensive pollution indexes of each section were all below 0. 25. The water quality of each section had significant spatial difference(P<0. 05)and the overall water quality of Lanzhou section was better than Baiyin section. The water quality of Fuhe Bridge section was significantly better than other sections except Xincheng Bridge(P<0. 05). In terms of season, the comprehensive pollution indexes of water quality in spring and winter were higher than those in summer and autumn(P<0. 05)in Lanzhou section while the seasonal fluctuation of water quality in Baiyin section was not obvious. The water quality of Lanzhou section notably improved from 2014 and experienced two periods including the stable decline period of comprehensive pollution index(2014-2017)and rapid decline period of comprehensive pollution index(2018-2019). The water quality change time of Baiyin section lagged behind Lanzhou section(2016)and the water quality improved significantly from 2017 to 2019. © 2021, Editorial Board of Water Resources Protection. All rights reserved.
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页码：44 / 49
页数：5
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