Impacts of climate change and reservoir operation on streamflow and flood characteristics in the Lancang-Mekong River Basin

doi:10.1016/j.jhydrol.2020.125472

	Impacts of climate change and reservoir operation on streamflow and flood characteristics in the Lancang-Mekong River Basin
	Yun, Xiaobo 1,5; Tang, Qiuhong 1,5; Wang, Jie 1,5; Liu, Xingcai 1; Zhang, Yongqiang 1; Lu, Hui 4; Wang, Yueling 1; Zhang, Lu 3; Chen, Deliang 2
刊名	JOURNAL OF HYDROLOGY
	2020-11-01
卷号	590 页码:11
关键词	Streamflow change Reservoirs Climate change The Lancang-Mekong River Basin Attribution
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125472
通讯作者	Tang, Qiuhong(tangqh@igsnrr.ac.cn)
英文摘要	The Lancang-Mekong River Basin (LMRB) is one of the most important transboundary river basins in Asia. While climate change perturbs the streamflow and affects flood events, reservoir operation may mitigate or aggravate this impact. Therefore, quantitative assessment of the climate change impact and reservoir effect on the LMRB is a vital prerequisite for future hydropower development and environmental protection. This study aimed to estimate the variation of the streamflow and flood characteristics affected by climate change and reservoir operation within the LMRB. A reservoir module was incorporated into the Variable Infiltration Capacity (VIC) model to simulate the streamflow susceptible to the reservoirs. It was found that the reservoirs had a substantial influence on the streamflow during 2008-2016, when many reservoirs were constructed in the LMRB. The reservoirs across the Lancang River (the upper Mekong River located in China) reduced the annual average streamflow by 5% at Chiang Sean station (northern Thailand) in 2008-2016, whereas their influence became undetectable downstream of Vientiane station (northern Laos). The streamflow changes downstream of Mukdahan station at southern Laos (including the stations in Cambodia and southern Vietnam) were mainly attributed to the local reservoirs and climate change. Compared with the baseline period of 1985-2007, the upstream reservoir operation dramatically affected streamflow at the midstream stations with higher dry season streamflow (+15% to +37%), but lower wet season streamflow was less affected (-2% to -24%) in 2008-2016. Climate change increased the magnitude and frequency of the flood by up to 14% and 45%, respectively, whereas the reservoir operation reduced them by 16% and 36%, respectively. Our findings provide insights into the interaction between climate change and reservoir operation and their integrated effects on the streamflow, informing and supporting water management and hydropower development in the LMRB.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA20060402] ; Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0208] ; National Natural Science Foundation of China[41730645] ; International Partnership Program of Chinese Academy of Sciences[131A11KYSB20180034] ; Newton Advanced Fellowship
WOS关键词	ECOSYSTEM SERVICES ; WATER ; HYDROPOWER ; MODEL ; DRIVERS ; BALANCE ; REGIME ; DAMS ; ASIA
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000599754500177
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; National Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; Newton Advanced Fellowship
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/137808]
专题	中国科学院地理科学与资源研究所
通讯作者	Tang, Qiuhong
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 2.Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, Gothenburg, Sweden 3.CSIRO Land & Water, Canberra, ACT, Australia 4.Tsinghua Univ, Dept Earth Syst Sci, Key Lab Earth Syst Modeling, Minist Educ, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yun, Xiaobo,Tang, Qiuhong,Wang, Jie,et al. Impacts of climate change and reservoir operation on streamflow and flood characteristics in the Lancang-Mekong River Basin[J]. JOURNAL OF HYDROLOGY,2020,590:11.
APA	Yun, Xiaobo.,Tang, Qiuhong.,Wang, Jie.,Liu, Xingcai.,Zhang, Yongqiang.,...&Chen, Deliang.(2020).Impacts of climate change and reservoir operation on streamflow and flood characteristics in the Lancang-Mekong River Basin.JOURNAL OF HYDROLOGY,590,11.
MLA	Yun, Xiaobo,et al."Impacts of climate change and reservoir operation on streamflow and flood characteristics in the Lancang-Mekong River Basin".JOURNAL OF HYDROLOGY 590(2020):11.