DOI: 10.1016/j.gloplacha.2012.11.001
论文题名: Cumulative sediment trapping by reservoirs in large river basins: A case study of the Yellow River basin
作者: Ran L. ; Lu X.X. ; Xin Z. ; Yang X.
刊名: Global and Planetary Change
ISSN: 0921-8351
出版年: 2013
卷: 100 起始页码: 308
结束页码: 319
语种: 英语
英文关键词: Reservoirs
; Sediment load
; Sediment trapping efficiency
; Sedimentation
; Yellow River
Scopus关键词: Check dam
; Construction history
; Data sets
; Deposited sediments
; Field sampling
; Large rivers
; Reservoir operation
; Reservoir sedimentation
; Reservoir sediments
; River basins
; Sediment delivery
; Sediment loads
; Sediment trapping
; Sediment yields
; Sloping land
; Storage capacity
; Subbasins
; Water storage
; Watershed management
; Yellow river
; Yellow River basin
; Deposits
; Petroleum reservoirs
; Remote sensing
; Reservoirs (water)
; Sedimentation
; Sedimentology
; Soil conservation
; Water conservation
; Water management
; Watersheds
; Sediments
; data set
; depositional environment
; remote sensing
; reservoir
; river basin
; sediment transport
; sediment trap
; sediment yield
; sedimentation
; water storage
; watershed
; China
; Yellow River Basin
英文摘要: Reservoir sedimentation has been a serious problem for reservoir operation and watershed management worldwide, which highlights the importance of accurate estimate of the deposited sediment amount. With reservoir information derived from remote sensing dataset and observed hydrological records of water and sediment, this paper is concerned with the cumulative reservoir sediment trapping in the Yellow River basin. The river basin was divided into 12 sub-basins, upon which the reservoirs' sediment trapping efficiency (TE) and their interception effects on inflowing sediment were estimated with sediment records extracted from 179 field sampling stations. The results show that, with the sediment TE greater than 80% for all the sub-basins, theoretically the basin-wide reservoirs are able to trap most sediment. For the whole river basin, the sediment TE averages 95.2%, which indicates that the reservoirs can collectively make a significant anthropogenic signature on basin-wide sediment delivery. A basin-wide sediment yield map was generated to estimate the reservoir sedimentation amount. During 1950-1970, annually about 2.483. Gt of sediment was transported into channels from sloping lands. Taking into account the actual water storage changes and the reservoir construction history, the actual reservoir sedimentation rate was estimated at 0.59. Gt/yr after corrections, which represents 47.6% of the river basin's total sediment load reduction. Globally, reservoir sedimentation in the Yellow River basin represents about 12-15% of the global mean rate. Up to 2010, approximately 19.32. Gt of sediment has been trapped by Yellow River reservoirs, and totally about 40.32. Gt of sediment has been artificially fixed if silt check dams are also considered. With huge amounts of sediment deposited, these reservoirs have been losing their storage capacity to sedimentation at a rate of 0.6% per year. The magnitude is expected to enhance in future following new reservoir completions. Thus, more efforts are strongly needed to explore the associated responses. © 2012 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870851766&doi=10.1016%2fj.gloplacha.2012.11.001&partnerID=40&md5=d4c356065de5bd21f6253177750caa41
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11257
Appears in Collections: 全球变化的国际研究计划
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作者单位: Department of Geography, National University of Singapore, 117570 Singapore, Singapore
Recommended Citation:
Ran L.,Lu X.X.,Xin Z.,et al. Cumulative sediment trapping by reservoirs in large river basins: A case study of the Yellow River basin[J]. Global and Planetary Change,2013-01-01,100.