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

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  • Calzadilla, Alvaro
  • Zhu, Tingju
  • Rehdanz, Katrin
  • Tol, Richard S.J.
  • Ringler, Claudia

Abstract

"Two possible adaptation options 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 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 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 or irrigated food production, both scenarios help lower world food prices, stimulating national and international food markets." from authors' abstract

Suggested Citation

  • 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).
  • Handle: RePEc:fpr:ifprid:873
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    References listed on IDEAS

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    1. Alvaro Calzadilla & Katrin Rehdanz & Richard S.J. Tol, 2008. "Water Scarcity And The Impact Of Improved Irrigation Management: A Cge Analysis," Working Papers FNU-160, Research unit Sustainability and Global Change, Hamburg University, revised Apr 2008.
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    4. Burniaux, Jean-Marc & Truong Truong, 2002. "GTAP-E: An Energy-Environmental Version of the GTAP Model," GTAP Technical Papers 923, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
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    6. Molden, David, 2007. "Water for food, water for life: a comprehensive assessment of water management in agriculture: summary. In Russian," IWMI Books, Reports H041260, International Water Management Institute.
    7. Anthony Letsoalo & James Blignaut & Theuns de Wet & Martin de Wit & Sebastiaan Hess & Richard S.J. Tol & Jan van Heerden, 2005. "Triple Dividends Of Water Consumption Charges In South Africa," Working Papers FNU-62, Research unit Sustainability and Global Change, Hamburg University, revised Apr 2005.
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    9. Scott McDonald & Sherman Robinson & Karen Thierfelder, 2005. "A SAM Based Global CGE Model using GTAP Data January 2005," Working Papers 2005001, The University of Sheffield, Department of Economics, revised Jan 2005.
    10. Inocencio, Arlene & Kikuchi, Masao & Tonosaki, Manabu & Maruyama, Atsushi & Merrey, Douglas & Sally, Hilmy & de Jong, Ijsbrand, 2007. "Costs and performance of irrigation projects: A comparison of Sub-Saharan Africa and other developing regions," IWMI Research Reports H036214, International Water Management Institute.
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    1. repec:eee:appene:v:195:y:2017:i:c:p:556-571 is not listed on IDEAS
    2. Heuson, Clemens & Gawel, Erik & Gebhardt, Oliver & Hansjürgens, Bernd & Lehmann, Paul & Meyer, Volker & Schwarze, Reimund, 2012. "Ökonomische Grundfragen der Klimaanpassung: Umrisse eines neuen Forschungsprogramms," UFZ Reports 02/2012, Helmholtz Centre for Environmental Research (UFZ).
    3. Nicholas Kilimani & Jan van Heerden & Heinrich Bohlmann & Louise Roos, 2016. "Counting the Cost of Drought Induced Productivity Losses in an Agro-Based Economy: The Case of Uganda," Working Papers 201649, University of Pretoria, Department of Economics.
    4. repec:zbw:espost:171321 is not listed on IDEAS
    5. James Thurlow & Paul Dorosh & Winston Yu, 2012. "A Stochastic Simulation Approach to Estimating the Economic Impacts of Climate Change in Bangladesh," Review of Development Economics, Wiley Blackwell, vol. 16(3), pages 412-428, August.
    6. Montaud, Jean-Marc & Pecastaing, Nicolas & Tankari, Mahamadou, 2017. "Potential socio-economic implications of future climate change and variability for Nigerien agriculture: A countrywide dynamic CGE-Microsimulation analysis," Economic Modelling, Elsevier, vol. 63(C), pages 128-142.
    7. Julius Kotir, 2011. "Climate change and variability in Sub-Saharan Africa: a review of current and future trends and impacts on agriculture and food security," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 13(3), pages 587-605, June.
    8. Mariya Aleksandrova & Animesh K. Gain & Carlo Giupponi, 2016. "Assessing agricultural systems vulnerability to climate change to inform adaptation planning: an application in Khorezm, Uzbekistan," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 21(8), pages 1263-1287, December.
    9. repec:eee:ecolec:v:146:y:2018:i:c:p:621-632 is not listed on IDEAS
    10. Henderson, J. Vernon & Storeygard, Adam & Deichmann, Uwe, 2014. "50 years of urbanization in Africa : examining the role of climate change," Policy Research Working Paper Series 6925, The World Bank.
    11. repec:spr:climat:v:143:y:2017:i:3:d:10.1007_s10584-017-2013-1 is not listed on IDEAS
    12. repec:wsi:ccexxx:v:08:y:2017:i:01:n:s201000781750004x is not listed on IDEAS
    13. Heuson, Clemens & Gawel, Erik & Gebhardt, Oliver & Hansjürgens, Bernd & Lehmann, Paul & Meyer, Volker & Schwarze, Reimund, 2012. "Fundamental questions on the economics of climate adaptation: Outlines of a new research programme," UFZ Reports 05/2012, Helmholtz Centre for Environmental Research (UFZ).
    14. Sahoo, Amarendra & Shiferaw, Bekele & Gbegbelegbe, Sika, 2016. "Economywide impacts of promising agricultural technologies on food security and welfare in Kenya," 2016 AAAE Fifth International Conference, September 23-26, 2016, Addis Ababa, Ethiopia 246960, African Association of Agricultural Economists (AAAE).

    More about this item

    Keywords

    Computable general equilibrium; Climate change; Agriculture; integrated assessment; Sub-Saharan Africa;

    JEL classification:

    • 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 and their Management; Global Warming
    • 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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