干旱区生态环境知识资源中心(Arid): Bi-decadal groundwater level trends in a semi-arid south indian region: Declines, causes and management

Arid

DOI	10.1016/j.ejrh.2016.09.005
	Bi-decadal groundwater level trends in a semi-arid south indian region: Declines, causes and management
	Sishodia, Rajendra P.; Shukla, Sanjay; Graham, Wendy D.; Wani, Suhas P.; Garg, Kaushal K.
通讯作者	Shukla, S
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
ISSN	2214-5818
出版年	2016
卷号	8 页码:43-58
英文摘要	Study region: Three districts in crystalline aquifer region of semi-arid south India. Study focus: India, world's largest groundwater user (250 billion m(3) yr(-1)) has been reported to experience declining groundwater levels. However, the statistical significance of the decline has not been analyzed to separate human effects from natural variability. Trends in groundwater levels in three administrative districts of south India were analyzed and explained through changes in irrigation, rainfall, and agricultural power subsidy. New hydrological insights for the region: Contrary to common perception of widespread groundwater declines only 22-36% of the wells showed statistically significant declines. The use of well depth during dry well periods may slightly underestimate the number of declining wells (by 1%) and rate of decline. Increase in groundwater irrigated area combined with rainfall and power subsidy policy, were the main causative factors for the decline. Groundwater decline after implementation of free-electricity policy in 2004 confirmed the nexus between power subsidy and groundwater. These declines are likely to worsen due to future well drillings. Trends in other regions with similar hydro-geologic conditions need to be analyzed to verify groundwater declines and its linkages with power subsidy. Once established, reforms in power subsidy and well permit policy along with conversion to efficient micro-irrigation may be needed to maintain or enhance groundwater availability in the crystalline aquifer region of India (240 million ha). (C) 2016 The Authors. Published by Elsevier B.V.
英文关键词	Agricultural power subsidy Crystalline aquifer Groundwater depletion Irrigation South India
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Accepted
收录类别	ESCI
WOS记录号	WOS:000407358500004
WOS关键词	IRRIGATED AGRICULTURE ; HYDROLOGICAL SERIES ; WATER MANAGEMENT ; ANDHRA-PRADESH ; BASIN-SCALE ; REGRESSION ; MODEL ; RECHARGE ; QUALITY ; QUANTIFICATION
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	International Crops Research Institute for the Semi-Arid Tropics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331863
作者单位	[Sishodia, Rajendra P.; Shukla, Sanjay] Univ Florida, SWFREC, Agr & Biol Engn ABE Dept, Immokalee, FL 34142 USA; [Graham, Wendy D.] UF, UF Water Inst, Gainesville, FL 32611 USA; [Graham, Wendy D.] UF, ABE Dept, Gainesville, FL 32611 USA; [Wani, Suhas P.; Garg, Kaushal K.] Int Crops Res Inst Semi Arid Trop, Patancheru 502324, Telangana, India
推荐引用方式 GB/T 7714	Sishodia, Rajendra P.,Shukla, Sanjay,Graham, Wendy D.,et al. Bi-decadal groundwater level trends in a semi-arid south indian region: Declines, causes and management[J]. International Crops Research Institute for the Semi-Arid Tropics,2016,8:43-58.
APA	Sishodia, Rajendra P.,Shukla, Sanjay,Graham, Wendy D.,Wani, Suhas P.,&Garg, Kaushal K..(2016).Bi-decadal groundwater level trends in a semi-arid south indian region: Declines, causes and management.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,8,43-58.
MLA	Sishodia, Rajendra P.,et al."Bi-decadal groundwater level trends in a semi-arid south indian region: Declines, causes and management".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 8(2016):43-58.