Response of the Changjiang (Yangtze River) water chemistry to the impoundment of Three Gorges Dam during 2010-2011 | |
Wang, Xiaodan1; Yang, Shouye1,2; Ran, Xiangbin2,3; Liu, Xiao-Ming4; Bataille, Clement P.4; Su, Ni1 | |
刊名 | CHEMICAL GEOLOGY |
2018-05-25 | |
卷号 | 487页码:1-11 |
关键词 | Water chemistry Changjiang (Yangtze River) Three Gorges Dam Damming effect Dissolved silicate |
ISSN号 | 0009-2541 |
DOI | 10.1016/j.chemgeo.2018.04.006 |
英文摘要 | The environmental impact of Three Gorges Dam (TGD) in the Changjiang (Yangtze River) is an important topic of concern for scientific communities and the public. However, the changes in river water chemistry in response to the dam construction remain poorly constrained. This study presents the seasonal variability of all major cations and some anions in the lower Changjiang during a full hydrological year from 2010 to 2011. The concentrations of all ions, except for HCO3-, are higher after the TGD operation than before (p<0.01), implying that the TGD has modified the river water chemistry in the mid-lower mainstream. Dissolved silicate (DSi) fluxes at Datong station thus increase slightly since the beginning of TGD impoundment. The change of mixing pattern of different water sources and alteration of hydrological and biogeochemical processes could cause the change of solute concentrations in the mid-lower Changjiang after the TGD operation. The mass balance model suggests that two factors primarily account for this increase of DSi observed at Datong: 1) an increasing loading of DSi downstream TGD due to erosion by "clean water", and 2) an enhanced "Source" role of Lake Poyang in the mid-lower reaches. Our study would provide insights into the damming effect on river water chemistry and the complexity of a large river system facing rapid climate change and strong human activities. |
资助项目 | Qingdao National Laboratory for Marine Science and Technology[2015ASTP-OS11] |
WOS研究方向 | Geochemistry & Geophysics |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000432466600001 |
内容类型 | 期刊论文 |
源URL | [http://ir.fio.com.cn/handle/2SI8HI0U/2903] |
专题 | 业务部门_海洋生态研究中心 |
作者单位 | 1.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China; 3.State Ocean Adm, Inst Oceanog 1, Res Ctr Marine Ecol, Qingdao 266061, Peoples R China; 4.Univ North Carolina Chapel Hill, Dept Geol Sci, Chapel Hill, NC 27599 USA |
推荐引用方式 GB/T 7714 | Wang, Xiaodan,Yang, Shouye,Ran, Xiangbin,et al. Response of the Changjiang (Yangtze River) water chemistry to the impoundment of Three Gorges Dam during 2010-2011[J]. CHEMICAL GEOLOGY,2018,487:1-11. |
APA | Wang, Xiaodan,Yang, Shouye,Ran, Xiangbin,Liu, Xiao-Ming,Bataille, Clement P.,&Su, Ni.(2018).Response of the Changjiang (Yangtze River) water chemistry to the impoundment of Three Gorges Dam during 2010-2011.CHEMICAL GEOLOGY,487,1-11. |
MLA | Wang, Xiaodan,et al."Response of the Changjiang (Yangtze River) water chemistry to the impoundment of Three Gorges Dam during 2010-2011".CHEMICAL GEOLOGY 487(2018):1-11. |
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