DOI: 10.1007/s10584-016-1874-z
Scopus记录号: 2-s2.0-85006915387
论文题名: Sediment related impacts of climate change and reservoir development in the Lower Mekong River Basin: a case study of the Nam Ou Basin, Lao PDR
作者: Shrestha B. ; Maskey S. ; Babel M.S. ; van Griensven A. ; Uhlenbrook S.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2016
起始页码: 1
结束页码: 15
语种: 英语
Scopus关键词: Climate models
; Rain
; Reservoir management
; Reservoirs (water)
; Rivers
; Sediments
; Watersheds
; Climate change scenarios
; General circulation model
; Regional circulation modeling
; Reservoir development
; Reservoir sedimentation
; Reservoir storage capacity
; Reservoir storage volumes
; Soil and water assessment tool
; Climate change
英文摘要: This study applies the soil and water assessment tool (SWAT), with climate (precipitation and temperature) outputs from four general circulation models (GCMs) and a regional circulation model (PRECIS), to evaluate (1) the impacts of climate change on reservoir sedimentation and (2) the impacts of climate change and reservoir development on sediment outflow in the Nam Ou River Basin located in northern Laos. Three reservoir–density scenarios, namely one reservoir (1R), three reservoirs in series (3R), and five reservoirs in series (5R), were evaluated for both no climate change and climate change conditions. The results show that under no climate change conditions, by 2070, around 17, 14, and 15% of the existing reservoir storage volume in the basin will be lost for 1R, 3R, and 5R scenarios, respectively. Notably, under climate change scenario with highest changes in erosion and sediment outflux from the basin, the additional reduction in reservoir storage capacity due to sedimentation is estimated to be nearly 26% for 1R, 21% for 3R, and 23% for 5R. Climate change alone is projected to change annual sediment outflux from the basin by −20 to 151%. In contrast, the development of reservoirs in the basin will reduce the annual sediment outflux from the basin varying from 44 to 80% for 1R, 44–81% for 3R, and 66–89% for 5R, considering climate change. In conclusion, climate change is expected to increase the sediment yield of the Nam Ou Basin, resulting in faster reduction of the reservoir’s storage capacity. Sediment yield from the Nam Ou River Basin is likely to decrease significantly due to the trapping of sediment by planned reservoirs. The impact of reservoirs is much more significant than the impact of climate change on the sediment outflow of the basin. Hence, it is necessary to investigate appropriate reservoir sediment management strategies. © 2016 Springer Science+Business Media Dordrecht Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84140
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Civil and Natural Resources Engineering, University of Canterbury, Private Bag 4800, Christchurch, New Zealand; Department of Water Science and Engineering, UNESCO-IHE Institute for Water Education, P.O Box 3015, Delft, Netherlands; Water Engineering and Management, School of Engineering and Technology, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani, Thailand; Department of Hydrology and Hydraulic Engineering, Vrije Universiteit Brussels, Pleinlaan 2, Brussels, Belgium; UN World Water Assessment Programme (WWAP), UNESCO, Villa La Colombella - 06134 Colombella Alta, Perugia, Italy
Recommended Citation:
Shrestha B.,Maskey S.,Babel M.S.,et al. Sediment related impacts of climate change and reservoir development in the Lower Mekong River Basin: a case study of the Nam Ou Basin, Lao PDR[J]. Climatic Change,2016-01-01