Achieving sustainable irrigation water withdrawals: global impacts on food security and land use
Abstract
Unsustainable water use challenges the capacity of water resources to ensure food security and continued growth of the economy. Adaptation policies targeting future water security can easily overlook its interaction with other sustainability metrics and unanticipated local responses to the larger-scale policy interventions. Using a global partial equilibrium grid-resolving model SIMPLE-G, and coupling it with the global Water Balance Model, we simulate the consequences of reducing unsustainable irrigation for food security, land use change, and terrestrial carbon. A variety of future (2050) scenarios are considered that interact irrigation productivity with two policy interventions— inter-basin water transfers and international commodity market integration. We find that pursuing sustainable irrigation may erode other development and environmental goals due to higher food prices and cropland expansion. This results in over 800,000 more undernourished people and 0.87 GtC additional emissions. Faster total factor productivity growth in irrigated sectors will encourage more aggressive irrigation water use in the basins where irrigation vulnerability is expected to be reduced by inter-basin water transfer. By allowing for a systematic comparison of these alternative adaptations to future irrigation vulnerability, the global gridded modeling approach offers unique insights into the multiscale nature of the water scarcity challenge.
- Authors:
-
- Purdue Univ., West Lafayette, IN (United States)
- Univ. of New Hampshire, Durham, NH (United States)
- Publication Date:
- Research Org.:
- Purdue Univ., West Lafayette, IN (United States); Univ. of New Hampshire, Durham, NH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1781802
- Grant/Contract Number:
- SC0016162; IARP 61351720-124215
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Environmental Research Letters
- Additional Journal Information:
- Journal Volume: 12; Journal Issue: 10; Journal ID: ISSN 1748-9326
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; sustainable development; irrigation vulnerability; multi-scale hydro-economic modeling
Citation Formats
Liu, Jing, Hertel, Thomas W., Lammers, Richard B., Prusevich, Alexander, Baldos, Uris Lantz C., Grogan, Danielle S., and Frolking, Steve. Achieving sustainable irrigation water withdrawals: global impacts on food security and land use. United States: N. p., 2017.
Web. doi:10.1088/1748-9326/aa88db.
Liu, Jing, Hertel, Thomas W., Lammers, Richard B., Prusevich, Alexander, Baldos, Uris Lantz C., Grogan, Danielle S., & Frolking, Steve. Achieving sustainable irrigation water withdrawals: global impacts on food security and land use. United States. https://doi.org/10.1088/1748-9326/aa88db
Liu, Jing, Hertel, Thomas W., Lammers, Richard B., Prusevich, Alexander, Baldos, Uris Lantz C., Grogan, Danielle S., and Frolking, Steve. Mon .
"Achieving sustainable irrigation water withdrawals: global impacts on food security and land use". United States. https://doi.org/10.1088/1748-9326/aa88db. https://www.osti.gov/servlets/purl/1781802.
@article{osti_1781802,
title = {Achieving sustainable irrigation water withdrawals: global impacts on food security and land use},
author = {Liu, Jing and Hertel, Thomas W. and Lammers, Richard B. and Prusevich, Alexander and Baldos, Uris Lantz C. and Grogan, Danielle S. and Frolking, Steve},
abstractNote = {Unsustainable water use challenges the capacity of water resources to ensure food security and continued growth of the economy. Adaptation policies targeting future water security can easily overlook its interaction with other sustainability metrics and unanticipated local responses to the larger-scale policy interventions. Using a global partial equilibrium grid-resolving model SIMPLE-G, and coupling it with the global Water Balance Model, we simulate the consequences of reducing unsustainable irrigation for food security, land use change, and terrestrial carbon. A variety of future (2050) scenarios are considered that interact irrigation productivity with two policy interventions— inter-basin water transfers and international commodity market integration. We find that pursuing sustainable irrigation may erode other development and environmental goals due to higher food prices and cropland expansion. This results in over 800,000 more undernourished people and 0.87 GtC additional emissions. Faster total factor productivity growth in irrigated sectors will encourage more aggressive irrigation water use in the basins where irrigation vulnerability is expected to be reduced by inter-basin water transfer. By allowing for a systematic comparison of these alternative adaptations to future irrigation vulnerability, the global gridded modeling approach offers unique insights into the multiscale nature of the water scarcity challenge.},
doi = {10.1088/1748-9326/aa88db},
journal = {Environmental Research Letters},
number = 10,
volume = 12,
place = {United States},
year = {Mon Oct 09 00:00:00 EDT 2017},
month = {Mon Oct 09 00:00:00 EDT 2017}
}
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