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    High carbon and biodiversity costs from converting Africa’s wet savannahs to cropland

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    Authors
    Searchinger, T.
    Estes, L
    Thornton, Philip K.
    Beringer, T
    Notenbaert, An Maria Omer
    Rubenstein, D
    Heimlich, R
    Licker, R
    Herrero, Mario T.
    Date
    2015-03
    Language
    en
    Type
    Journal Article
    Accessibility
    Limited Access
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    Citation
    Searchinger, T., Estes, L., Thornton, P.K., Beringer, T., Notenbaert, A, Rubenstein, D., Heimlich, R., Licker, R. and Herrero, M. 2015. High carbon and biodiversity costs from converting Africa’s wet savannahs to cropland. Nature Climate Change 5: 481–486.
    Permanent link to cite or share this item: http://hdl.handle.net/10568/58318
    External link to download this item: http://www.nature.com/nclimate/journal/vaop/ncurrent/full/nclimate2584.html
    DOI: https://dx.doi.org/doi:10.1038/nclimate2584
    Abstract/Description
    Do the wet savannahs and shrublands of Africa provide a large reserve of potential croplands to produce food staples or bioenergy with low carbon and biodiversity costs? We find that only small percentages of these lands have meaningful potential to be low-carbon sources of maize (~2%) or soybeans (9.5–11.5%), meaning that their conversion would release at least one-third less carbon per ton of crop than released on average for the production of those crops on existing croplands. Factoring in land-use change, less than 1% is likely to produce cellulosic ethanol that would meet European standards for greenhouse gas reductions. Biodiversity effects of converting these lands are also likely to be significant as bird and mammal richness is comparable to that of the world’s tropical forest regions. Our findings contrast with influential studies that assume these lands provide a large, low-environmental-cost cropland reserve.
    CGIAR Affiliations
    Climate Change, Agriculture and Food Security
    AGROVOC Keywords
    AGRICULTURE; FOOD SECURITY; FARMLAND; BIOLOGICAL RESOURCES; CLIMATE CHANGE ADAPTATION; CLIMATE; SOIL
    Subjects
    PRIORITIES AND POLICIES FOR CSA; CLIMATE CHANGE;
    Regions
    AFRICA; AFRICA SOUTH OF SAHARA; CENTRAL AFRICA; EAST AFRICA; NORTH AFRICA; SOUTHERN AFRICA; SAHEL; WEST AFRICA; WEST AND CENTRAL AFRICA
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    • CCAFS Journal Articles [801]
    • ILRI articles in journals [4809]

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