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Sedimentation and associated trace metal enrichment in the riparian zone of the Three Gorges Reservoir, China
文献类型:期刊论文
作者 | Tang, Qiang1,2; Bao, Yuhai1; He, Xiubin1; Zhou, Huaidong3; Cao, Zhijing4; Gao, Peng5; Zhong, Ronghua1,2; Hu, Yunhua1,2; Zhang, Xinbao1 |
刊名 | SCIENCE OF THE TOTAL ENVIRONMENT |
出版日期 | 2014-05-01 |
卷号 | 479页码:258-266 |
ISSN号 | 0048-9697 |
关键词 | Sedimentation Trace metal Diffuse contaminant Riparian zone Three Gorges Reservoir |
通讯作者 | Xiubin He |
英文摘要 | Impoundment of the Three Gorges Reservoir has created an artificial riparian zone with a vertical height of 30 m and a total area of 349 km(2), which has been subjected to seasonal inundation and exposure due to regular reservoir impoundment and the occurrence of natural floods. The significant alteration of hydrologic regime has caused numerous environmental changes. The present study investigated the magnitude and spatial pattern of sedimentation and metal enrichment in a typical section of the riparian zone, composed of bench terraces with previous agricultural land uses, and explored their links to the changed hydrologic regime. In particular, we measured the total sediment depths and collected surface riparian sediments and down-profile sectioned riparian soils (at 5 cm intervals) for trace metal determination. Our analysis showed that the annual average sedimentation rates varied from 0.5 to 10 cm.yr(-1) and they decreased significantly with increasing elevation. This lateral distribution was principally attributed to seasonal variations in water levels and suspended sediment concentrations. Enriched concentrations of trace metals were found both in the riparian sediments and soils, but they were generally higher in the riparian sediments than in riparian soils and followed a similar lateral decreasing trend. Metal contamination assessment showed that the riparian sediments were slightly contaminated by Ni, Zn, and Pb, moderately contaminated by Cu, and moderately to strongly contaminated by Cd; while riparian soils were slightly contaminated by As, and moderately contaminated by Cd. Trace metal enrichment in the riparian sediments may be attributed to external input of contaminated sediments produced from upstream anthropogenic sources and chemical adsorption from dissolved fractions during pure sediment mobilization and after sink for a prolonged flooding period due to reservoir impoundment. (C) 2014 Elsevier B.V. All rights reserved. |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
类目[WOS] | Environmental Sciences |
研究领域[WOS] | Environmental Sciences & Ecology |
关键词[WOS] | LEVEL-FLUCTUATION ZONE ; SPATIAL-PATTERNS ; ORGANIC-MATTER ; RIVER ; VEGETATION ; POLLUTION ; REGION ; CONTAMINATION ; FLOODPLAINS ; TRANSPORT |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000334006700030 |
公开日期 | 2014-02-28 |
源URL | [http://ir.imde.ac.cn/handle/131551/6835] |
专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
作者单位 | 1.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 100049, Peoples R China 3.China Inst Water Resources & Hydrol Res, Water Environm Dept, Beijing 100038, Peoples R China 4.Sichuan Univ, Coll Architecture & Environm, Chengdu 610065, Peoples R China 5.Syracuse Univ, Dept Geog, Syracuse, NY 13244 USA |
推荐引用方式 GB/T 7714 | Tang, Qiang,Bao, Yuhai,He, Xiubin,et al. Sedimentation and associated trace metal enrichment in the riparian zone of the Three Gorges Reservoir, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2014,479:258-266. |
APA | Tang, Qiang.,Bao, Yuhai.,He, Xiubin.,Zhou, Huaidong.,Cao, Zhijing.,...&Zhang, Xinbao.(2014).Sedimentation and associated trace metal enrichment in the riparian zone of the Three Gorges Reservoir, China.SCIENCE OF THE TOTAL ENVIRONMENT,479,258-266. |
MLA | Tang, Qiang,et al."Sedimentation and associated trace metal enrichment in the riparian zone of the Three Gorges Reservoir, China".SCIENCE OF THE TOTAL ENVIRONMENT 479(2014):258-266. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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