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The Impact of Climate, CO2 and Population on Regional Food and Water Resources in the 2050s

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dc.contributor.author Wiltshire, A. J.
dc.contributor.author Kay, G.
dc.contributor.author Gornall, J. L.
dc.contributor.author Betts, R. A.
dc.date.accessioned 2013-10-17T14:11:54Z
dc.date.available 2013-10-17T14:11:54Z
dc.date.issued 2013-05
dc.identifier.issn 2071-1050
dc.identifier.other doi:10.3390/su5052129
dc.identifier.uri http://www.taccire.sua.ac.tz/handle/123456789/203
dc.description.abstract Population growth and climate change are likely to impact upon food and water availability over the coming decades. In this study we use an ensemble of climate simulations to project the implications of both these drivers on regional changes in food and water. This study highlights the dominant effect of population growth on per capita resource allocation over climate induced changes in our model projections. We find a strong signal for crop yield reductions due to climate change by the 2050s in the absence of CO2 fertilisation effects. However, when these additional processes are included this trend is reversed. The impacts of climate on water resources are more uncertain. Overall, we find reductions in the global population living in water stressed conditions due to the combined effects of climate and CO2. Africa is a key region where projected decreases in runoff and crop productivity from climate change alone are potentially reversed when CO2 fertilisation effects are included, but this is highly uncertain. Plant physiological response to increasing atmospheric CO2 is a major driver of the changes in crop productivity and water availability in this study; it is poorly constrained by observations and is thus a critical uncertainty. en_GB
dc.language.iso en en_GB
dc.publisher MDPI, Basel, Switzerland en_GB
dc.relation.ispartofseries Sustainability;5, 2129-2151
dc.subject Climate change en_GB
dc.subject carbon dioxide en_GB
dc.subject food security en_GB
dc.subject Africa en_GB
dc.subject Population en_GB
dc.subject Population growth en_GB
dc.subject water resources en_GB
dc.title The Impact of Climate, CO2 and Population on Regional Food and Water Resources in the 2050s en_GB
dc.type Article en_GB

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  • Climate Change impacts
    All information related to the effects and impacts of climate and weather variability --- be it on agriculture, environment, food security, transport, health etc

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