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GTAP Resources: Resource Display

GTAP Resource #3017

"Economy-Wide Impacts of Climate Change on Agriculture in Sub-Saharan Africa"
by Calzadilla, Alvaro, Tingju Zhu, Katrin Rehdanz, Richard Tol and Claudia Ringler


Abstract
Two possible adaptation options to climate change for Sub-Saharan Africa are analyzed under the SRES B2 scenario. The first scenario doubles irrigated areas 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 percent 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 model, and with GTAP-W, a general equilibrium model including water resources. The methodology combines advantages of a partial equilibrium approach, considering detailed water-agriculture linkages with a general equilibrium approach, which takes into account linkages between agriculture and non-agricultural 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 low initial irrigated areas in the region, an increase in agricultural productivity achieves better outcomes than an expansion of irrigated areas. Even though Sub-Saharan Africa is not a key contributor to global food production or irrigated food production, both scenarios help lower world food prices, stimulating national and international food markets.


Resource Details (Export Citation) GTAP Keywords
Category: 2009 Conference Paper
Status: Published
By/In: Hamburg University, Research unit Sustainability and Global Change FNU-170; Presented at the 12th Annual Conference on Global Economic Analysis, Santiago, Chile
Date: 2009
Version:
Created: Calzadilla, A. (4/14/2009)
Updated: Calzadilla, A. (4/14/2009)
Visits: 2,558
- Agricultural policies
- The GTAP Data Base and extensions
- Africa (Southern)


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