Spatio-temporal characteristics and source identification of water pollutants in the upper and middle reachers of Heihe River

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	Spatio-temporal characteristics and source identification of water pollutants in the upper and middle reachers of Heihe River
	Wang, Yu1,2 ; Lu, Shi-Guo 1; Feng, Qi 2; Liu, Xian-De 3; Liu, Juan-Juan 1; Zhao, Wei-Jun 3; Kong, De-Xing 1; Zuo, Yi-Feng 1
	2019-10-20
发表期刊	Zhongguo Huanjing Kexue/China Environmental Science
ISSN	10006923
卷号	39 期号:10 页码:4194-4204
摘要	Thirty-three water sampling sites in Heihe River of the upper and middle reachers were set to characterize its water quality with spatiotemporal distribution. Water sampling trips were conducted in May (wet period), August (flow period), December (dry period) of 2017. Spatial and seasonal variations of water quality were analyzed by using the multivariate statistical methods and water quality were assessed by employing the comprehensive water quality identification index. The results indicated that the main types of water quality in the region were Class II and Class III, it also had a certain space-time differentiation. In temporal terms, the order of pollution was dry period > wet period > flow period; the spatial pollution situation was the upper tributary > the lower main stream > the middle reaches. According to landscape difference, the sampling sites were divided into 4groups: grazing and industrial area (Group A), reservoir area (Group B), agriculture and urban area (Group C). The results of factor analysis and APCS-MLR show that NH3-N, BOD5 and CODMn were typical pollutants in this region, and the pollution sources of group A were mainly from organic matter, followed by nutrients; the water quality of group B was mainly polluted by the accumulation of organic matter and nutrients, while the influence of natural factors were relatively weak; group C was mainly polluted by biochemistry, followed by non-point source nutrients pollution. The results show that human activities were still the main factors affecting the deterioration of water quality. Although the interception effect of dams could improve the quality of discharge water, the pollutants accumulated in the reservoir area all the year round have the potential risk of secondary pollution with the change of environment, such as the activation and release of nutrients in sediments. © 2019, Editorial Board of China Environmental Science. All right reserved.
关键词	Agricultural robots Ammonia Biogeochemistry Deterioration Drought Multivariant analysis Nutrients Organic compounds Reservoirs (water) Rivers Urban growth Water quality Heihe river Multivariate statistical method Source identification Spatial temporals Water quality indexes
收录类别	EI
语种	中文
出版者	Chinese Society for Environmental Sciences
EI入藏号	20194807763690
EI主题词	River pollution
EI分类号	403.1 Urban Planning and Development - 441.2 Reservoirs - 444 Water Resources - 445.2 Water Analysis - 453 Water Pollution - 481.2 Geochemistry - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 922 Statistical Methods - 951 Materials Science
来源库	Compendex
分类代码	403.1 Urban Planning and Development - 441.2 Reservoirs - 444 Water Resources - 445.2 Water Analysis - 453 Water Pollution - 481.2 Geochemistry - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 922 Statistical Methods - 951 Materials Science
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114751
专题	新能源学院能源与动力工程学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Ecohydrology of Inland River Basin, Chinese Academy of Sciences, Lanzhou; 730000, China; 3.Academy of Water Resources Conservation Forests in Qilian Mountains of Gansu Province, Zhangye; 734000, China
第一作者单位	新能源学院
第一作者的第一单位	新能源学院
推荐引用方式 GB/T 7714	Wang, Yu,Lu, Shi-Guo,Feng, Qi,et al. Spatio-temporal characteristics and source identification of water pollutants in the upper and middle reachers of Heihe River[J]. Zhongguo Huanjing Kexue/China Environmental Science,2019,39(10):4194-4204.
APA	Wang, Yu.,Lu, Shi-Guo.,Feng, Qi.,Liu, Xian-De.,Liu, Juan-Juan.,...&Zuo, Yi-Feng.(2019).Spatio-temporal characteristics and source identification of water pollutants in the upper and middle reachers of Heihe River.Zhongguo Huanjing Kexue/China Environmental Science,39(10),4194-4204.
MLA	Wang, Yu,et al."Spatio-temporal characteristics and source identification of water pollutants in the upper and middle reachers of Heihe River".Zhongguo Huanjing Kexue/China Environmental Science 39.10(2019):4194-4204.