Exploration and application of hydrochemical characteristics method for quantification of pollution sources in the Danjiangkou Reservoir area

doi:10.1016/j.jhydrol.2020.125291

	Exploration and application of hydrochemical characteristics method for quantification of pollution sources in the Danjiangkou Reservoir area
	Wei, Mengjiao 1,3; Duan, Pengfei 3; Gao, Pengcheng 1; Guo, Shengli 4; Hu, Yaxian 4; Yao, Lunguang 3; Li, Ming 1,2
刊名	JOURNAL OF HYDROLOGY
	2020-11-01
卷号	590 页码:12
关键词	Pollution Point source (PS) Non-point source (NPS) Hydrochemical characteristics Ion indicators Nutrients
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125291
通讯作者	Duan, Pengfei(dpf19830905@nynu.edu.cn) ; Li, Ming(lileaf@nwsuaf.edu.cn)
英文摘要	The quantification of point source (PS) pollution and non-point source (NPS) pollution in different regions is needed so that targeted management strategies for water environment managers can be prepared. The aim of this study was to establish a method for quantifying PS and NPS pollution by measuring ion concentrations. The Danjiangkou Reservoir and its main tributaries were selected as the study area. The spatiotemporal variation in the concentration of nutrients and ions was analyzed. The results showed that the main ions did not display any distinct spatiotemporal variations on the reservoir, but spatiotemporal variations were evident in the tributaries: Mg2+, Na+, SO42- and Cl- were lowest in the wet season, K+ was highest in the dry-to-wet transition season, and Si was highest in the wet season. We selected Cl-/TN, SO42-/TN, and Na+/TN as PS pollution tracking indicators and K+/TN, Ca2+/TN, and Si/TN as NPS pollution tracking indicators. The mean contribution rate of NPS pollution calculated using Cl-/TN, Na+/TN, and Si/TN, and by the isotope approach, had a significant linear relationship (p < 0.01). Therefore, Cl-/TN, Na+/TN and Si/TN were used to quantitatively assess the pollution sources. The calculated results indicated the TN load was dominated by the NPS pollution, and the average contribution rates of NPS of TN in the tributaries from the dry season to the wet season were 79%, 83%, and 93%, respectively. The TN load of NPS was highest during the wet season with a maximum value over 400 x 10(-3) t a(-1) km(-2), while the TN load of PS was highest during the dry season with a maximum value of 39.3 t a(-1). This study provides a new approach to the quantitative analysis of pollution sources by using hydrochemical characteristic ion indicators.
资助项目	Scientific Research and Service Platform fund of Henan Province[2016151] ; Scientific and Technological Innovation team of Water Ecological Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province[17454] ; Cyrus Tang Foundation, China
WOS关键词	MULTIVARIATE STATISTICAL TECHNIQUES ; NONPOINT-SOURCE POLLUTION ; MAJOR ION COMPOSITIONS ; HAN RIVER-BASIN ; WATER-QUALITY ; GROUNDWATER CONTAMINATION ; WEATHERING PROCESSES ; POINT-SOURCE ; FRESH-WATER ; CHEMISTRY
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000599754500076
资助机构	Scientific Research and Service Platform fund of Henan Province ; Scientific and Technological Innovation team of Water Ecological Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province ; Cyrus Tang Foundation, China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/137398]
专题	中国科学院地理科学与资源研究所
通讯作者	Duan, Pengfei; Li, Ming
作者单位	1.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China 2.Minist Agr & Rural Affairs, Sci Lab Heyang Agr Environm & Farmland Cultivat, Heyang, Peoples R China 3.Nanyang Normal Univ, Collaborat Innovat Ctr Water Secur Water Source R, Nanyang 473061, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wei, Mengjiao,Duan, Pengfei,Gao, Pengcheng,et al. Exploration and application of hydrochemical characteristics method for quantification of pollution sources in the Danjiangkou Reservoir area[J]. JOURNAL OF HYDROLOGY,2020,590:12.
APA	Wei, Mengjiao.,Duan, Pengfei.,Gao, Pengcheng.,Guo, Shengli.,Hu, Yaxian.,...&Li, Ming.(2020).Exploration and application of hydrochemical characteristics method for quantification of pollution sources in the Danjiangkou Reservoir area.JOURNAL OF HYDROLOGY,590,12.
MLA	Wei, Mengjiao,et al."Exploration and application of hydrochemical characteristics method for quantification of pollution sources in the Danjiangkou Reservoir area".JOURNAL OF HYDROLOGY 590(2020):12.