干旱区生态环境知识资源中心(Arid): Quantifying the impact of climate extremes on salt mobilization and loading in non-developed, high-desert landscapes using SWAT

Arid

DOI	10.1016/j.jconhyd.2022.104107
	Quantifying the impact of climate extremes on salt mobilization and loading in non-developed, high-desert landscapes using SWAT
	Henson, Eleanor; Bailey, Ryan T.
通讯作者	Bailey, RT
来源期刊	JOURNAL OF CONTAMINANT HYDROLOGY
ISSN	0169-7722
EISSN	1873-6009
出版年	2023
卷号	252
英文摘要	Excess salt loading from watershed landscapes into river systems acts as a chemical stressor in water bodies and can have significant impacts on downstream water quality. High salinity threatens sustainable crop production globally and is especially prevalent in semi-arid and arid regions. However, relatively little research has been conducted to evaluate salt movement and loadings in natural, high-desert catchments in the face of climate change and extreme climate events. In this study, we use the watershed model SWAT and a newly developed salinity module to simulate the mass transport of 8 major salt ions, SO4 -, Cl-, CO32-, HCO3-, Ca2+, Na+, Mg2+, and K+, in the soil-aquifer-stream system of the Purgatoire River Watershed (PRW) (Colorado, USA, 8935 km2) via major hydrologic pathways (surface runoff, percolation, recharge, soil lateral flow, groundwater upflux, groundwater discharge) and quantify changes in predicted salt loads with possible future increasing storm in-tensity. The PRW is susceptible to high salt transport due to high topographic slopes, dry climatic conditions, and sparse vegetation, and loads to the Arkansas River, a major source of irrigation water in the Arkansas River Basin. From study results we conclude that 99% of salt in the Purgatoire River originates from subsurface water pathways (soil lateral flow, groundwater flow), composed primarily of SO4-, Ca2+, and HCO3-. If intensity of large storms increases by 5% and 35%, the total salt mass exported from the watershed increases by 12% and 73%, respectively, indicating large influxes of legacy salt from the soil-aquifer system. For baseline and storm intensity scenarios, the PRW contributes significant salt loads to agricultural regions via the Arkansas River, highlighting the need for basin-wide salt management strategies to include upland desert regions. We expect these results, and associated consequences for salt management, to be similar for other upland desert catchments worldwide.
英文关键词	Salinity River basin Management Groundwater Irrigation
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000951001400001
WOS关键词	IRRIGATED AGRICULTURE ; SALINITY ; WATER ; SUSTAINABILITY ; TRANSPORT ; RECHARGE ; BASIN ; SOIL
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397243
推荐引用方式 GB/T 7714	Henson, Eleanor,Bailey, Ryan T.. Quantifying the impact of climate extremes on salt mobilization and loading in non-developed, high-desert landscapes using SWAT[J],2023,252.
APA	Henson, Eleanor,&Bailey, Ryan T..(2023).Quantifying the impact of climate extremes on salt mobilization and loading in non-developed, high-desert landscapes using SWAT.JOURNAL OF CONTAMINANT HYDROLOGY,252.
MLA	Henson, Eleanor,et al."Quantifying the impact of climate extremes on salt mobilization and loading in non-developed, high-desert landscapes using SWAT".JOURNAL OF CONTAMINANT HYDROLOGY 252(2023).