Economywide impacts of climate change on agriculture in Sub-Saharan Africa.

Calzadilla, A., Zhu, T. J., Rehdanz, Katrin, Tol, R. S. J. and Ringler, C. (2013) Economywide impacts of climate change on agriculture in Sub-Saharan Africa. Ecological Economics, 93 . pp. 150-165. DOI 10.1016/j.ecolecon.2013.05.006.

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Abstract

Two 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.

Document Type: Article
Additional Information: Times Cited: 0 Calzadilla, Alvaro Zhu, Tingju Rehdanz, Katrin Tol, Richard S. J. Ringler, Claudia
Keywords: Computable general Equilibrium, Climate change, Agriculture, Sub-Saharan Africa
Research affiliation: Kiel University
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/j.ecolecon.2013.05.006
ISSN: 0921-8009
Projects: Future Ocean
Date Deposited: 08 Jul 2014 08:58
Last Modified: 23 Aug 2019 09:29
URI: http://oceanrep.geomar.de/id/eprint/24871

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