Response of the sediment geochemistry of the Changjiang River (Yangtze River) to the impoundment of the Three Gorges Dam

doi:10.1016/j.jes.2019.04.003

	Response of the sediment geochemistry of the Changjiang River (Yangtze River) to the impoundment of the Three Gorges Dam
	Wang, Hao 1,3; Ran, Xiangbin 1,2; Li, Jingxi 1; Liu, Jun 1; Wu, Wentao 1; Li, Menglu 1; Zang, Jiaye 1
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2019-09
卷号	83 页码:161-173
关键词	Changjiang River Suspended sediment Metal element Human activity TGD
ISSN号	1001-0742
DOI	10.1016/j.jes.2019.04.003
英文摘要	Based on the measurement of major and trace elements in suspended sediments in the low reaches of the Changjiang River during throughout a whole hydrologic year, the origins, seasonal variations, and fluxes of multielements and the human impacts on multielements transport processes have been analyzed along with the influence of weathering in the Changjiang River basin. The results show that most element contents were high in both autumn and winter and low in summer, which was largely caused by the dilution of discharge. Weathering detritus in the Changjiang River basin is the main source of most elements in suspended sediments. However, riverine pollution could bring more loadings of Cd, Pb, As and Zn into river water than it did a few decades ago. The annual average fluxes of Cd, Pb and Zn, which are major contamination elements, to the sea were 179 +/- 21 tons/year, 7810 +/- 675 tons/year, and 12,000 +/- 1320 tons/year, respectively, in which approximately 8.7%, 11.9% and 2.7% of their loadings, respectively, were contributed by pollution inputs. Element exports mainly occurred in the summer (44.4%-57.4%) in the lower part of the Changjiang River. A general relationship between sediment retention and element content suggests a positive feedback mechanism for the decreased number of particles, in which element riverine loadings are reduced due to the enhanced trapping effect by the Three Gorges Dam (TGD). Compared to those in 1980, current element shares of the Changjiang River compared to the global budget have declined due to the construction of the TGD. (c) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
资助项目	Basic Scientific Fund for National Public Research Institutes of China[2017S03] ; Basic Scientific Fund for National Public Research Institutes of China[2016S03]
WOS关键词	HEAVY-METAL DISTRIBUTION ; EAST CHINA SEA ; TRACE-METALS ; SUSPENDED SEDIMENTS ; CHEMICAL-COMPOSITION ; COASTAL AREA ; ELEMENTS ; SOILS ; WATER ; ESTUARINE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000471830000015
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/24600]
专题	自然资源部第一海洋研究所
通讯作者	Ran, Xiangbin
作者单位	1.Minist Nat Resources, Inst Oceanog 1, Res Ctr Marine Ecol, Qingdao 266061, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Shandong, Peoples R China 3.Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hao,Ran, Xiangbin,Li, Jingxi,et al. Response of the sediment geochemistry of the Changjiang River (Yangtze River) to the impoundment of the Three Gorges Dam[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2019,83:161-173.
APA	Wang, Hao.,Ran, Xiangbin.,Li, Jingxi.,Liu, Jun.,Wu, Wentao.,...&Zang, Jiaye.(2019).Response of the sediment geochemistry of the Changjiang River (Yangtze River) to the impoundment of the Three Gorges Dam.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,83,161-173.
MLA	Wang, Hao,et al."Response of the sediment geochemistry of the Changjiang River (Yangtze River) to the impoundment of the Three Gorges Dam".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 83(2019):161-173.