Water/Policy issues: Difference between revisions
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|Description=In baseline scenarios, water use is typically projected to increase rapidly. This can be illustrated in the baseline scenario study for the [[OECD Environmental Outlook to 2050 (2012) project|OECD Environmental Outlook to 2050]] ([[OECD, 2012]]), in which water demand is projected to increase by 53% globally, mostly due to a high increase in non-agricultural water use (Figure below). However, this baseline scenario did not consider irrigated area expansion, which is expected to further increase demand for irrigation water (Figure | |Reference=Fischer et al., 2005; Molden, 2007; FAO, 2012b; Gerten et al., 2013; | ||
|Description=In baseline scenarios, water use is typically projected to increase rapidly. This can be illustrated in the baseline scenario study for the [[OECD Environmental Outlook to 2050 (2012) project|OECD Environmental Outlook to 2050]] ([[OECD, 2012]]), in which water demand is projected to increase by 53% globally, mostly due to a high increase in non-agricultural water use (Figure below). However, this baseline scenario did not consider irrigated area expansion, which is expected to further increase demand for irrigation water (Figure top left). As a result of the increase in total water demand, and a change in water availability due to climate change, the number of people living in medium to severely water stressed basins will increase by 80%, according to this baseline (Figure top right). | |||
Expansion of rain-fed and irrigated croplands together with increased crop yields are projected in studies on the future of the global food system ([[Fischer et al., 2005]]; [[Molden, 2007]]; [[FAO, 2012b]]; [[Gerten et al., 2013]]). However, irrigation expansion and related increases in crop yields may not be feasible because of water scarcity (Figure below). | Expansion of rain-fed and irrigated croplands together with increased crop yields are projected in studies on the future of the global food system ([[Fischer et al., 2005]]; [[Molden, 2007]]; [[FAO, 2012b]]; [[Gerten et al., 2013]]). However, irrigation expansion and related increases in crop yields may not be feasible because of water scarcity (Figure below). | ||
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Revision as of 14:13, 20 May 2014
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