DOI: 10.1002/2016GL069797
论文题名: America's water: Agricultural water demands and the response of groundwater
作者: Ho M. ; Parthasarathy V. ; Etienne E. ; Russo T.A. ; Devineni N. ; Lall U.
刊名: Geophysical Research Letters
ISSN: 0094-8889
EISSN: 1944-8620
出版年: 2016
卷: 43, 期: 14 起始页码: 7546
结束页码: 7555
语种: 英语
英文关键词: drought index
; groundwater depletion
Scopus关键词: Agriculture
; Aquifers
; Drought
; Groundwater
; Agricultural water
; Drought indices
; Groundwater depletion
; Groundwater withdrawal
; Immediate Recovery
; Mississippi river
; Temporal variability
; Winter precipitation
; Groundwater resources
; aquifer
; drought
; groundwater abstraction
; precipitation (climatology)
; temporal variation
; water demand
; water level
; water use
; well
; Maryland
; Mississippi River
; Ogallala Aquifer
; Texas
; United States
; Utah
英文摘要: Agricultural, industrial, and urban water use in the conterminous United States (CONUS) is highly dependent on groundwater that is largely drawn from nonsurficial wells (>30 m). We use a Demand-Sensitive Drought Index to examine the impacts of agricultural water needs, driven by low precipitation, high agricultural water demand, or a combination of both, on the temporal variability of depth to groundwater across the CONUS. We characterize the relationship between changes in groundwater levels, agricultural water deficits relative to precipitation during the growing season, and winter precipitation. We find that declines in groundwater levels in the High Plains aquifer and around the Mississippi River Valley are driven by groundwater withdrawals used to supplement agricultural water demands. Reductions in agricultural water demands for crops do not, however, lead to immediate recovery of groundwater levels due to the demand for groundwater in other sectors in regions such as Utah, Maryland, and Texas. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979230988&doi=10.1002%2f2016GL069797&partnerID=40&md5=81690d2801aa24126a87f097eb6fff09
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9852
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Columbia Water Center, Columbia University, New York, NY, United States
Recommended Citation:
Ho M.,Parthasarathy V.,Etienne E.,et al. America's water: Agricultural water demands and the response of groundwater[J]. Geophysical Research Letters,2016-01-01,43(14).