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DOI	10.1016/j.scitotenv.2021.147717
	Appraising climate change impacts on future water resources and agricultural productivity in agro-urban river basins
	Aliyari, Fatemeh; Bailey, Ryan T.; Arabi, Mazdak
通讯作者	Aliyari, F (corresponding author), Colorado State Univ, Dept Civil & Environm Engn, 1372 Campus Delivery, Ft Collins, CO 80523 USA.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	788
英文摘要	Climate change can have an adverse effect on agricultural productivity and water availability in semi-arid regions, as changes in surface water availability lead to groundwater depletion and resultant losses in crop yield. These inter-relationships necessitate an integrated management approach for surface water, groundwater, and crop yield as a holistic system. This study quantifies the future availability of surface water and groundwater and associated crop production in a large semi-arid agro-urban river basin in which agricultural irrigation is a leader consumer of water. The region of study is the South Platte River Basin (72,000 km(2)), Colorado, USA. The coupled SWAT-MODFLOW modeling code is used as the hydrologic simulator and forced with five different CMIP5 climate models downscaled by Multivariate Adaptive Constructed Analogs (MACA), each for two climate scenarios, RCP4.5, and RCP8.5, for 1980-2100. The hydrologic model accounts for surface runoff, soil lateral flow, groundwater flow, ground-water-surface water interactions, irrigation from surface water and groundwater, and crop yield on a per-field basis. In all climate models and emission scenarios, an increase of 3 to 5 degrees C in annual average temperature is projected. Whereas, variation in the projected precipitation depends on topography and distances from mountains. Based on the results of this study, the worst-case climate model in the basin is IPSL-CM5A-MR-8.5. Under this climate scenario, for a 1 degrees C increase in temperature and the 1.3% reduction in annual precipitation, the basin will experience an 8.5% decrease in stream discharge, 2-5% decline in groundwater storage, and 11% reduction in crop yield. These results indicate the significant effect of climate change on water and food resources of a large river basin, pointing to the need for immediate implementation of conservation practices. (C) 2021 Elsevier B.V. All rights reserved.
英文关键词	Hydrological modeling Climate change Water availability Agricultural productivity Large scale watershed Coupled SWAT-MODFLOW
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000662645700007
WOS关键词	GROUNDWATER RESOURCES ; SURFACE ; MODEL
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	Colorado State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351686
作者单位	[Aliyari, Fatemeh; Bailey, Ryan T.; Arabi, Mazdak] Colorado State Univ, Dept Civil & Environm Engn, 1372 Campus Delivery, Ft Collins, CO 80523 USA
推荐引用方式 GB/T 7714	Aliyari, Fatemeh,Bailey, Ryan T.,Arabi, Mazdak. Appraising climate change impacts on future water resources and agricultural productivity in agro-urban river basins[J]. Colorado State University,2021,788.
APA	Aliyari, Fatemeh,Bailey, Ryan T.,&Arabi, Mazdak.(2021).Appraising climate change impacts on future water resources and agricultural productivity in agro-urban river basins.SCIENCE OF THE TOTAL ENVIRONMENT,788.
MLA	Aliyari, Fatemeh,et al."Appraising climate change impacts on future water resources and agricultural productivity in agro-urban river basins".SCIENCE OF THE TOTAL ENVIRONMENT 788(2021).