Economywide impacts of climate change on agriculture in Sub-Saharan Africa
AbstractTwo possible adaptation scenarios to climate change for Sub-Saharan Africa are analyzed under the SRES B2 scenario. The first scenario doubles the irrigated area in Sub-Saharan Africa by 2050, compared to the baseline, but keeps total crop area constant. The second scenario increases both rainfed and irrigated crop yields by 25% for all Sub-Saharan African countries. The two adaptation scenarios are analyzed with IMPACT, a partial equilibrium agricultural sector model combined with a water simulation module, and with GTAP-W, a general equilibrium model including water resources. The methodology combines the advantages of a partial equilibrium approach, which considers detailed water-agriculture linkages, with a general equilibrium approach, which takes into account linkages between agriculture and nonagricultural sectors and includes a full treatment of factor markets. The efficacy of the two scenarios as adaptation measures to cope with climate change is discussed. Due to the limited initial irrigated area in the region, an increase in agricultural productivity achieves better outcomes than an expansion of irrigated area. Even though Sub-Saharan Africa is not a key contributor to global food production (rainfed, irrigated or total), both scenarios help lower world food prices, stimulating national and international food markets.
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Bibliographic InfoArticle provided by Elsevier in its journal Ecological Economics.
Volume (Year): 93 (2013)
Issue (Month): C ()
Contact details of provider:
Web page: http://www.elsevier.com/locate/ecolecon
Computable general equilibrium; Climate change; Agriculture; Sub-Saharan Africa;
Other versions of this item:
- Calzadilla, Alvaro & Zhu, Tingju & Rehdanz, Katrin & Tol, Richard S.J. & Ringler, Claudia, 2009. "Economywide impacts of climate change on agriculture in Sub-Saharan Africa:," IFPRI discussion papers 873, International Food Policy Research Institute (IFPRI).
- D58 - Microeconomics - - General Equilibrium and Disequilibrium - - - Computable and Other Applied General Equilibrium Models
- Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters
- Q17 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agriculture in International Trade
- N57 - Economic History - - Agriculture, Natural Resources, Environment and Extractive Industries - - - Africa; Oceania
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