Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR028351 |
Sediment management for reservoir sustainability and cost implications under land use/land cover change uncertainty | |
Bikesh Shrestha; Thomas A. Cochrane; Brian S. Caruso; Mauricio E. Arias; Thomas B. Wild | |
2021-03-19 | |
发表期刊 | Water Resources Research
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出版年 | 2021 |
英文摘要 | Addressing uncertainty in sediment predictions due to land use/land cover (LULC) change could better inform the selection of sediment management options for reservoir sustainability. We used the Nam Kong catchment of the Mekong River Basin in Southern Laos, with two hydropower dams in series, to understand the implications of LULC change uncertainty for catchment‐level and reservoir‐level sediment management options. The catchment‐level sediment management options of terracing, vegetative filter strips and no tillage were evaluated applying the Soil and Water Assessment Tool (SWAT). The reservoir‐level sediment management option of flushing was assessed using the Sediment Simulation Screening Python Model (PySedSim). Costs of sediment management options were assessed via the economic value of the loss in hydropower production and the avoided cost of dredging. Our results suggest that LULC projections resulted in high variability in loss of reservoir capacity and cost of sediment management. Terracing was found to be the best catchment‐level management option at decreasing both the magnitude and variability in loss of reservoir storage for both dams, but it was also the most expensive option. Flushing was also effective in reducing sedimentation, but it was less economically beneficial compared to catchment‐level sediment management options. Combinations of catchment‐level and reservoir‐level management strategies, however, can be effective in reducing the magnitude and variability in loss of reservoir storage and associated costs in response to LULC change uncertainty. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/319846 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Bikesh Shrestha,Thomas A. Cochrane,Brian S. Caruso,et al. Sediment management for reservoir sustainability and cost implications under land use/land cover change uncertainty[J]. Water Resources Research,2021. |
APA | Bikesh Shrestha,Thomas A. Cochrane,Brian S. Caruso,Mauricio E. Arias,&Thomas B. Wild.(2021).Sediment management for reservoir sustainability and cost implications under land use/land cover change uncertainty.Water Resources Research. |
MLA | Bikesh Shrestha,et al."Sediment management for reservoir sustainability and cost implications under land use/land cover change uncertainty".Water Resources Research (2021). |
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