DOI: 10.1016/j.gloplacha.2012.10.004
论文题名: Impact of the Three-Gorges Dam and water transfer project on Changjiang floods
作者: Nakayama T. ; Shankman D.
刊名: Global and Planetary Change
ISSN: 0921-8378
出版年: 2013
卷: 100 起始页码: 38
结束页码: 50
语种: 英语
英文关键词: Changjiang river
; Eco-hydrology model
; Flood risk
; Sedimentation
; South-to-north water Transfer project
; Three-gorges dam
Scopus关键词: Dry biomass
; Eco-hydrology
; Flood discharge
; Flood risks
; Heterogeneous distributions
; Hydrologic changes
; Integrated approach
; Landscape changes
; Levee construction
; Monsoon rainfall
; Morphological changes
; Normalized difference vegetation index
; Poyang Lake
; Sand mining
; Satellite images
; Sediment deposition
; South to North Water Transfer Project
; Summer monsoon
; Water transfer projects
; Atmospheric thermodynamics
; Catchments
; Computer simulation
; Dams
; Deforestation
; Flood damage
; Groundwater
; Rivers
; Sedimentation
; Lakes
; biomass
; catchment
; deforestation
; flood
; flood damage
; groundwater-surface water interaction
; hydrological modeling
; levee
; mining
; risk assessment
; river discharge
; sand and gravel
; satellite imagery
; sedimentation rate
; China
; Jiangxi
; Poyang Lake
; Yangtze River
英文摘要: Increasing frequency of severe floods on the middle and lower Changjiang (Yangtze) River during the past few decades can be attributed to both abnormal monsoon rainfall and landscape changes that include extensive deforestation affecting river sedimentation, and shrinking lakes and levee construction that reduced the areas available for floodwater storage. The Three-Gorges Dam (TGD) and the South-to-North Water Transfer Project (SNWTP) will also affect frequency and intensity of severe floods in the Poyang Lake region of the middle Changjiang. Process-based National Integrated Catchment-based Eco-hydrology (NICE) model predicts that the TGD will increase flood risk during the early summer monsoon against the original justifications for building the dam, relating to complex river-lake-groundwater interactions. Several scenarios predict that morphological change will increase flood risk around the lake. This indicates the importance of managing both flood discharge and sediment deposition for the entire basin. Further, the authors assessed the impact of sand mining in the lake after its prohibition on the Changjiang, and clarified that alternative scenario of sand mining in lakes currently disconnected from the mainstream would reduce the flood risk to a greater extent than intensive dredging along junction channel. Because dry biomasses simulated by the model were linearly related to the Time-Integrated Normalized Difference Vegetation Index (TINDVI) estimated from satellite images, its decadal gradient during 1982-1999 showed a spatially heterogeneous distribution and generally decreasing trends beside the lakes, indicating that the increases in lake reclamation and the resultant decrease in rice productivity are closely related to the hydrologic changes. This integrated approach could help to minimize flood damage and promote better decisions addressing sustainable development. © 2012 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868314570&doi=10.1016%2fj.gloplacha.2012.10.004&partnerID=40&md5=ab1ea20da3e124428153bcfa0e30ab7d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11284
Appears in Collections: 全球变化的国际研究计划
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作者单位: Center for Global Environmental Research, National Institute for Environmental Studies (NIES), 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
Recommended Citation:
Nakayama T.,Shankman D.. Impact of the Three-Gorges Dam and water transfer project on Changjiang floods[J]. Global and Planetary Change,2013-01-01,100.