干旱区生态环境知识资源中心(Arid): Hydrologic modeling of reach scale fluxes from flood irrigated fields

Arid

DOI	10.1016/j.jhydrol.2021.126254
	Hydrologic modeling of reach scale fluxes from flood irrigated fields
	Claes, N.; Paige, G. B.; Gordon, B. L.; Parsekian, A. D.; Miller, S. N.
通讯作者	Claes, N (corresponding author), Univ Wyoming, Dept Ecosyst Sci & Management, 1000 E Univ Ave, Laramie, WY 82071 USA.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2021
卷号	598
英文摘要	Agricultural water is of considerable interest to water managers and policymakers as irrigation-particularly flood irrigation-accounts for the largest portion of freshwater use. However, characterization of how and when flood applied water contributes to storage and adjacent surface water bodies via return flow remains limited, particularly relative to the volume of studies addressing surface processes. This study focuses on improving our understanding of return flow paths and explicitly quantifying subsurface return flow contributions using hydrogeophysical observations coupled with a vadose zone transport flow model. Our approach, which simulates return flow in agricultural fields in a small, heavily instrumented field site in northern Wyoming, leverages daily measured values of evapotranspiration obtained from a large aperture scintillometer and atmospheric conditions, and uses seismic data to characterize heterogeneous structure of the soil profiles at field scale. We use these high-resolution, site specific datasets to parameterize a process-based vadose zone flow model that quantifies hydrologic response to flood irrigation along the stream reach, allowing us to identify return flow fluxes out of the fields. Using our approach, we found that the majority of applied irrigation water (60%) left the fields through subsurface flow paths, while only 13% was consumed by vegetation. Subsurface runoff over less-permeable soil layers, governed by the subsurface structural characteristics, was identified as the dominant subsurface flow process contributing to fluxes out of the fields. Importantly, our findings about the importance of subsurface return flow paths nuance previous research which has emphasized surface flow paths. By improving our understanding of return flow processes through a high-resolution vadose zone model that leverages climatological, geophysical, and hydrological observations, this study advances our understanding of return flow processes. Understanding how subsurface characteristics influence return flow generation in semi-arid agriculturally productive regions will help managers and policy makers balance desires for improved irrigation efficiency against concerns about irrigation-dependent ecosystem services.
英文关键词	Flood irrigation Near-surface geophysics Return flow Vadose zone processes Hydrogeophysics Subsurface flow model
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000661813200086
WOS关键词	RETURN-FLOW ; HYDRAULIC CONDUCTIVITY ; FRONT RANGE ; WATER-FLOW ; SOIL ; SUBSURFACE ; GROUNDWATER ; SIMULATION ; BASIN
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368655
作者单位	[Claes, N.; Paige, G. B.; Gordon, B. L.; Miller, S. N.] Univ Wyoming, Dept Ecosyst Sci & Management, 1000 E Univ Ave, Laramie, WY 82071 USA; [Claes, N.] Aarhus Univ, Dept Geosci, Nordre Ringgade 1, DK-8000 Aarhus C, Denmark; [Gordon, B. L.] Univ Nevada, Grad Program Hydrol Sci, 1664 North Virginia St, Reno, NV 89557 USA; [Parsekian, A. D.] Univ Wyoming, Dept Geol & Geophys, 1000 E Univ Ave, Laramie, WY 82071 USA; [Parsekian, A. D.] Univ Wyoming, Dept Civil & Architectural Engn, 1000 E Univ Ave, Laramie, WY 82071 USA
推荐引用方式 GB/T 7714	Claes, N.,Paige, G. B.,Gordon, B. L.,et al. Hydrologic modeling of reach scale fluxes from flood irrigated fields[J],2021,598.
APA	Claes, N.,Paige, G. B.,Gordon, B. L.,Parsekian, A. D.,&Miller, S. N..(2021).Hydrologic modeling of reach scale fluxes from flood irrigated fields.JOURNAL OF HYDROLOGY,598.
MLA	Claes, N.,et al."Hydrologic modeling of reach scale fluxes from flood irrigated fields".JOURNAL OF HYDROLOGY 598(2021).