Assessment of climate change impacts on the streamflow for the Mun River in the Mekong Basin, Southeast Asia: Using SWAT model

doi:10.1016/j.catena.2021.105199

	Assessment of climate change impacts on the streamflow for the Mun River in the Mekong Basin, Southeast Asia: Using SWAT model
	Li, Chaoyue ; Fang, Haiyan 1
刊名	CATENA
	2021-06-01
卷号	201 页码:13
关键词	Climate change SWAT Streamflow Mun River Basin Southeast Asia
ISSN号	0341-8162
DOI	10.1016/j.catena.2021.105199
通讯作者	Fang, Haiyan(fanghy@igsnrr.ac.cn)
英文摘要	The typical warm and wet regions of Southeast Asia have significant water resource issues. Deep insight of the future streamflow in the region is therefore necessary for effective water resource management and prediction. We coupled the Soil and Water Assessment Tool (SWAT) with a downscaling method (Delta) and global circulation models (GCMs) in the Mun River Basin (MRB), in Thailand under three Representative Concentration Pathways (RCPs). The results show that the calibrated SWAT model can accurately characterize the hydrological process on the daily, monthly, and yearly terms. The future monthly minimum temperature would rise by >1.5 degrees C, >2 degrees C, and >3 degrees C in the 2030s, 2060s, and 2080s respectively, under all RCPs (2.6, 4.5, and 8.5), which would also occur at the maximum temperature. The temperature increase in dry season was more significant than that of the wet season. The average annual precipitation decreased in the 2030s, and increased by 8.9%, 12.8%, and 13.9% in the 2060s under the three climate scenarios, respectively. Moreover, precipitation from June to September in wet season markedly increased. The streamflow was projected to increase by 10.5%, 20.1%, and 23.2% during 2020-2093 under three climate scenarios, respectively. Monthly average streamflow increased from June to September and decreased from February to May, and the dry seasonal streamflow decreased by 1.1%-37.2%. These changes in flow were closely related to climate change. Monthly flow changes were negatively related to temperature (p < 0.05) in dry season and positively linked to precipitation (p < 0.01) in wet season. The results of this study highlight the impact of climate change on streamflow in the Southeast Asia and provide scientific basis for adaptive management.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences A[XDA20060402] ; National Science Foundation of China[41977066]
WOS研究方向	Geology ; Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000631043700015
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences A ; National Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/160465]
专题	中国科学院地理科学与资源研究所
通讯作者	Fang, Haiyan
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Chaoyue,Fang, Haiyan. Assessment of climate change impacts on the streamflow for the Mun River in the Mekong Basin, Southeast Asia: Using SWAT model[J]. CATENA,2021,201:13.
APA	Li, Chaoyue,&Fang, Haiyan.(2021).Assessment of climate change impacts on the streamflow for the Mun River in the Mekong Basin, Southeast Asia: Using SWAT model.CATENA,201,13.
MLA	Li, Chaoyue,et al."Assessment of climate change impacts on the streamflow for the Mun River in the Mekong Basin, Southeast Asia: Using SWAT model".CATENA 201(2021):13.