Global food security under climate change

This article reviews the potential impacts of climate change on food security. It is found that of the four main elements of food security, i.e., availability, stability, utilization, and access, only the first is routinely addressed in simulation studies. To this end, published results indicate tha...

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Bibliographic Details
Published inProceedings of the National Academy of Sciences - PNAS Vol. 104; no. 50; pp. 19703 - 19708
Main Authors Schmidhuber, Josef, Tubiello, Francesco N
Format Journal Article
LanguageEnglish
Published United States National Academy of Sciences 11.12.2007
National Acad Sciences
SeriesClimate Change and Food Security Special Feature
Subjects
Agricultural organizations
Agriculture
Agroecology
Biological Sciences
Climate
Climate change
Climate Change and Food Security Special Feature
crop production
Economic development
Environmental impact
Food access
food availability
Food crops
Food security
Food Supply
Forecasting
global food security
Greenhouse Effect
Humans
Hunger
Impact analysis
literature reviews
Malnutrition
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Summary:This article reviews the potential impacts of climate change on food security. It is found that of the four main elements of food security, i.e., availability, stability, utilization, and access, only the first is routinely addressed in simulation studies. To this end, published results indicate that the impacts of climate change are significant, however, with a wide projected range (between 5 million and 170 million additional people at risk of hunger by 2080) strongly depending on assumed socio-economic development. The likely impacts of climate change on the other important dimensions of food security are discussed qualitatively, indicating the potential for further negative impacts beyond those currently assessed with models. Finally, strengths and weaknesses of current assessment studies are discussed, suggesting improvements and proposing avenues for new analyses.
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Author contributions: J.S. and F.N.T. designed research, contributed new reagents/analytic tools, analyzed data, and wrote the paper.
Edited by William Easterling, Pennsylvania State University, University Park, PA, and accepted by the Editorial Board August 16, 2007
ISSN:0027-8424
1091-6490
1091-6490
DOI:10.1073/pnas.0701976104