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Title: Invisible water, visible impact: groundwater use and Indian agriculture under climate change

Journal Article · · Environmental Research Letters
 [1];  [2];  [1];  [2];  [2];  [1];  [2];  [3]
  1. Pennsylvania State Univ., University Park, PA (United States). Dept of Agricultural Economics, Sociology and Education
  2. Univ. of New Hampshire, Durham, NH (United States). Inst. for the Study of Earth, Oceans, and Space
  3. Pennsylvania State Univ., University Park, PA (United States). Earth and Environmental Systems Inst.

India is one of the world's largest food producers, making the sustainability of its agricultural system of global significance. Groundwater irrigation underpins India's agriculture, currently boosting crop production by enough to feed 170 million people. Groundwater overexploitation has led to drastic declines in groundwater levels, threatening to push this vital resource out of reach for millions of small-scale farmers who are the backbone of India's food security. Historically, losing access to groundwater has decreased agricultural production and increased poverty. We take a multidisciplinary approach to assess climate change challenges facing India's agricultural system, and to assess the effectiveness of large-scale water infrastructure projects designed to meet these challenges. We find that even in areas that experience climate change induced precipitation increases, expansion of irrigated agriculture will require increasing amounts of unsustainable groundwater. Finally, the large proposed national river linking project has limited capacity to alleviate groundwater stress. Thus, without intervention, poverty and food insecurity in rural India is likely to worsen.

Research Organization:
Stanford Univ., CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF)
Grant/Contract Number:
SC0005171
OSTI ID:
1436294
Journal Information:
Environmental Research Letters, Vol. 11, Issue 8; ISSN 1748-9326
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 99 works
Citation information provided by
Web of Science

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Cited By (12)

India's depleting groundwater: When science meets policy journal January 2019
Groundwater depletion limits the scope for adaptation to increased rainfall variability in India journal February 2018
Appraisal of the groundwater balance components from multi-remote sensing datasets in a semi-arid region journal October 2018
On the Changes in Groundwater Storage Variability in Western India Using GRACE and Well Observations journal November 2019
Adaptation to climate change: historical evidence from the Indian monsoon journal June 2017
The role of irrigation in changing wheat yields and heat sensitivity in India journal September 2019
Groundwater depletion causing reduction of baseflow triggering Ganges river summer drying journal August 2018
Trend analysis using discrete wavelet transform (DWT) for long-term precipitation (1851–2006) over India journal September 2017
Achieving sustainable irrigation water withdrawals: global impacts on food security and land use journal October 2017
Some Contributions of Integrated Assessment Models of Global Climate Change journal January 2017
Response of Water Resources to Future Climate Change in a High-Latitude River Basin journal October 2019
Long-term groundwater recharge rates across India by in situ measurements journal January 2019

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