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Water 2015, 7(3), 975-992; doi:10.3390/w7030975

Water Scarcity and Future Challenges for Food Production

1
Department of Science for Nature and Environmental Resources (DipNeT), University of Sassari, Via De Nicola 9, Sassari 07100, Italy
2
IAFES Division, Euro-Mediterranean Center on Climate Change (CMCC), Sassari 07100, Italy
3
Department of Land, Air and Water Resources, University of California, One Shields Ave., Davis, CA 95616, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Athanasios Loukas
Received: 2 December 2014 / Revised: 4 January 2015 / Accepted: 9 February 2015 / Published: 10 March 2015
View Full-Text   |   Download PDF [2149 KB, uploaded 9 June 2015]   |  

Abstract

Present water shortage is one of the primary world issues, and according to climate change projections, it will be more critical in the future. Since water availability and accessibility are the most significant constraining factors for crop production, addressing this issue is indispensable for areas affected by water scarcity. Current and future issues related to “water scarcity” are reviewed in this paper so as to highlight the necessity of a more sustainable approach to water resource management. As a consequence of increasing water scarcity and drought, resulting from climate change, considerable water use for irrigation is expected to occur in the context of tough competition between agribusiness and other sectors of the economy. In addition, the estimated increment of the global population growth rate points out the inevitable increase of food demand in the future, with an immediate impact on farming water use. Since a noteworthy relationship exists between the water possessions of a country and the capacity for food production, assessing the irrigation needs is indispensable for water resource planning in order to meet food needs and avoid excessive water consumption. View Full-Text
Keywords: internal and external water resources; agricultural water demand; land grabbing; water footprint; water for food; sustainable water use internal and external water resources; agricultural water demand; land grabbing; water footprint; water for food; sustainable water use
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mancosu, N.; Snyder, R.L.; Kyriakakis, G.; Spano, D. Water Scarcity and Future Challenges for Food Production. Water 2015, 7, 975-992.

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