IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Distribution and potential eco-risk of chromium and nickel in sediments after impoundment of Three Gorges Reservoir, China
Wang, Xiaoxiao1,2; Bing, Haijian1; Wu, Yanhong1; Zhou, Jun1; Sun, Hongyang1
Corresponding AuthorYanhong Wu
2017
Source PublicationHUMAN AND ECOLOGICAL RISK ASSESSMENT
ISSN1080-7039
EISSN1549-7860
Volume23Issue:1Pages:172-185
SubtypeArticle
AbstractThe impoundment of the Three Gorges Reservoir (TGR) altered the hydrodynamic conditions and modulated the accumulation and behaviors of heavy metals in the sediments. In this study, the sediments from the riparian and submerged areas of the entire TGR mainstream were collected in 2014 to investigate the spatial distribution of chromium (Cr) and nickel (Ni), and to assess their contamination state and potential eco-risk to aquatic environment by multiple indices. Results showed that the concentrations of Cr and Ni in the sediments increased toward the dam. The concentrations of Cr were significantly higher in the riparian sediments than in the submerged sediments, whereas the Ni concentrations were comparable. The relatively high storages of Cr and Ni in the sediments existed near the dam. The physiochemical properties of sediments and local human activities controlled the spatial variations of Cr and Ni in the sediments. Currently, the TGR sediments are not heavily contaminated by Cr and Ni and show low eco-risk. Nevertheless, considering the decrease in sediment loads from the upper Yangtze River and the rapid urbanization in the TGR catchment, much more attentions should be paid to the geochemical behaviors and the eco-risk of Cr and Ni in the sediments.
KeywordHeavy Metals Spatial Distribution Eco-risk Sediments Three Gorges Reservoir
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1080/10807039.2016.1234362
WOS Subject ExtendedBiodiversity & Conservation ; Environmental Sciences & Ecology
Indexed BySCI
WOS KeywordHEAVY-METAL CONTAMINATION ; NONPOINT-SOURCE POLLUTION ; LEVEL-FLUCTUATION ZONE ; YANGTZE-RIVER ; PHOSPHORUS ; SIMULATION ; INDEXES ; LOAD
Language英语
Quartile4区
TOP
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000393700200012
Funding OrganizationKey Laboratory of Mountain Surface Processes and Ecological Regulation ; Chinese Academy of Sciences ; Science and Technology Service Network Initiative of the Chinese Academy of Sciences(KFJ-EW-STS-008) ; CAS "Light of West China" Program of the Chinese Academy of Sciences
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Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17743
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Wang, Xiaoxiao,Bing, Haijian,Wu, Yanhong,et al. Distribution and potential eco-risk of chromium and nickel in sediments after impoundment of Three Gorges Reservoir, China[J]. HUMAN AND ECOLOGICAL RISK ASSESSMENT,2017,23(1):172-185.
APA Wang, Xiaoxiao,Bing, Haijian,Wu, Yanhong,Zhou, Jun,&Sun, Hongyang.(2017).Distribution and potential eco-risk of chromium and nickel in sediments after impoundment of Three Gorges Reservoir, China.HUMAN AND ECOLOGICAL RISK ASSESSMENT,23(1),172-185.
MLA Wang, Xiaoxiao,et al."Distribution and potential eco-risk of chromium and nickel in sediments after impoundment of Three Gorges Reservoir, China".HUMAN AND ECOLOGICAL RISK ASSESSMENT 23.1(2017):172-185.
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