干旱区生态环境知识资源中心(Arid): Assessment of System Responses in Intensively Irrigated Stream-Aquifer Systems Using SWAT-MODFLOW

Arid

DOI	10.3390/w11081576
	Assessment of System Responses in Intensively Irrigated Stream-Aquifer Systems Using SWAT-MODFLOW
	Wei, Xiaolu; Bailey, Ryan T.
通讯作者	Wei, Xiaolu
来源期刊	WATER
EISSN	2073-4441
出版年	2019
卷号	11 期号:8
英文摘要	Water management strategies need to balance water security and food production, particularly in semi-arid regions wherein irrigation is required to supplement rainfall. Irrigated stream-aquifer systems present a unique challenge in this effort, due to complex groundwater-surface water interactions and the high level of human intervention in managing irrigation practices. This paper has two objectives: first, to detail a method for constructing and applying a coupled SWAT-MODFLOW to irrigated stream-aquifer systems; and second, to use the model to quantify the effects of decreasing irrigation on hydrological responses and crop yield. The method is applied to a 734 km(2) study region in the Lower Arkansas River Valley, an alluvial valley in Colorado, USA, which has been intensively irrigated for over 100 years and is threatened by shallow water tables. Therefore, a reduction in applied irrigation amounts has the double benefit of conserving water and decreasing waterlogging, given that crop yield can be maintained for food production. The results indicate that an approximate 10% decrease in total applied irrigation water results in decreases of 6% in surface runoff, 8% in evapotranspiration, and 4% in recharge water. It also results in an increase of 4% in groundwater return flow to the Arkansas River, and an actual increase in groundwater levels due to the decrease in groundwater pumping, pointing to the need for targeted irrigation reduction strategies to decrease waterlogging occurrence. The irrigation reduction yields an average 9% decrease in corn and alfalfa yield. This modeling approach is in general transferable to other similar irrigated river valleys.
英文关键词	SWAT-MODFLOW modeling intensively irrigation hydrological response crop yield groundwater-surface water interactions
类型	Article
语种	英语
国家	USA
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000484561500050
WOS关键词	WATER ASSESSMENT-TOOL ; SURFACE-WATER ; LAND-USE ; GROUNDWATER RECHARGE ; MANAGEMENT-PRACTICES ; DEFICIT IRRIGATION ; CROP YIELD ; MODEL ; SOIL ; RIVER
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
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/2XILL650/219241
作者单位	Colorado State Univ, Dept Civil & Environm Engn, 1372 Campus Delivery, Ft Collins, CO 80523 USA
推荐引用方式 GB/T 7714	Wei, Xiaolu,Bailey, Ryan T.. Assessment of System Responses in Intensively Irrigated Stream-Aquifer Systems Using SWAT-MODFLOW[J]. Colorado State University,2019,11(8).
APA	Wei, Xiaolu,&Bailey, Ryan T..(2019).Assessment of System Responses in Intensively Irrigated Stream-Aquifer Systems Using SWAT-MODFLOW.WATER,11(8).
MLA	Wei, Xiaolu,et al."Assessment of System Responses in Intensively Irrigated Stream-Aquifer Systems Using SWAT-MODFLOW".WATER 11.8(2019).