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East African food security as influenced by future climate change and land use change at local to regional scales

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dc.creator Moore, Nathan
dc.creator Alagarswamy, Gopal
dc.creator Pijanowski, Bryan
dc.creator Thornton, Philip
dc.creator Yanda, Pius Z.
dc.creator Lofgren, Brent
dc.creator Olson, Jennifer
dc.creator Andresen, Jeffrey
dc.creator Qi, J.
dc.date 2016-03-11T08:36:06Z
dc.date 2016-03-11T08:36:06Z
dc.date 2012
dc.date.accessioned 2018-04-18T11:50:08Z
dc.date.available 2018-04-18T11:50:08Z
dc.identifier Moore, N., Alagarswamy, G., Pijanowski, B., Thornton, P., Lofgren, B., Olson, J., Andresen, J., Yanda, P. and Qi, J., 2012. East African food security as influenced by future climate change and land use change at local to regional scales. Climatic change, 110(3-4), pp.823-844.
dc.identifier http://hdl.handle.net/123456789/854
dc.identifier 10.1007/s10584-011-0116-7
dc.identifier.uri http://hdl.handle.net/123456789/10552
dc.description Full text available at http://link.springer.com/article/10.1007/s10584-011-0116-7
dc.description Climate change impacts food production systems, particularly in locations with large, vulnerable populations. Elevated greenhouse gases (GHG), as well as land cover/land use change (LCLUC), can influence regional climate dynamics. Biophysical factors such as topography, soil type, and seasonal rainfall can strongly affect crop yields. We used a regional climate model derived from the Regional Atmospheric Modeling System (RAMS) to compare the effects of projected future GHG and future LCLUC on spatial variability of crop yields in East Africa. Crop yields were estimated with a process-based simulation model. The results suggest that: (1) GHG-influenced and LCLUC-influenced yield changes are highly heterogeneous across this region; (2) LCLUC effects are significant drivers of yield change; and (3) high spatial variability in yield is indicated for several key agricultural sub-regions of East Africa. Food production risk when considered at the household scale is largely dependent on the occurrence of extremes, so mean yield in some cases may be an incomplete predictor of risk. The broad range of projected crop yields reflects enormous variability in key parameters that underlie regional food security; hence, donor institutions’ strategies and investments might benefit from considering the spatial distribution around mean impacts for a given region. Ultimately, global assessments of food security risk would benefit from including regional and local assessments of climate impacts on food production. This may be less of a consideration in other regions. This study supports the concept that LCLUC is a first-order factor in assessing food production risk.
dc.language en
dc.publisher Springer
dc.subject Food ecurity
dc.subject Climate change
dc.subject Land use
dc.subject East Africa
dc.title East African food security as influenced by future climate change and land use change at local to regional scales
dc.type Journal Article, Peer Reviewed


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