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Climate Change and Food Security to 2050: A Global Economy-wide Perspective

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  • Valenzuela, Ernesto
  • Anderson, Kym

Abstract

Recent analyses of the possible adverse effects of climate change on agriculture in developing countries have raised food security concerns, especially for farm households whose crop productivity is expected to fall. The present study uses the GTAP global economy-wide model to capture at the same time the expected positive effects on temperate zone crop productivity, which will more or less offset the upward pressure on farm product prices from yield falls in developing countries. Also modelled is an expected adverse effect of higher temperatures and humidity on the productivity of unskilled workers in the tropics, but since they work in nonfarm as well as farm activities the net effect of that shock on agriculture’s competitiveness is an empirical matter. The results suggest there may be less cause for concern over food security than some earlier studies indicated, but the degrees of uncertainty involved in such modelling are sufficient to warrant a precautionary approach.

Suggested Citation

  • Valenzuela, Ernesto & Anderson, Kym, 2011. "Climate Change and Food Security to 2050: A Global Economy-wide Perspective," 2011 Conference (55th), February 8-11, 2011, Melbourne, Australia 100531, Australian Agricultural and Resource Economics Society.
    • Handle: RePEc:ags:aare11:100531
    DOI: 10.22004/ag.econ.100531
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    References listed on IDEAS

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    1. Alvaro Calzadilla & Katrin Rehdanz & Richard Betts & Pete Falloon & Andy Wiltshire & Richard Tol, 2013. "Climate change impacts on global agriculture," Climatic Change, Springer, vol. 120(1), pages 357-374, September.
    2. Beddow, Jason M. & Pardey, Philip G. & Alston, Julian M., 2009. "The Shifting Global Patterns of Agricultural Productivity," Choices: The Magazine of Food, Farm, and Resource Issues, Agricultural and Applied Economics Association, vol. 24(4), pages 1-10.
    3. Aaditya Mattoo & Arvind Subramanian & Dominique van der Mensbrugghe & Jianwu He, 2009. "Reconciling Climate Change and Trade Policy," Working Papers 189, Center for Global Development.
    4. Hertel, Thomas & Hummels, David & Ivanic, Maros & Keeney, Roman, 2007. "How confident can we be of CGE-based assessments of Free Trade Agreements?," Economic Modelling, Elsevier, vol. 24(4), pages 611-635, July.
    5. Garnaut,Ross, 2008. "The Garnaut Climate Change Review," Cambridge Books, Cambridge University Press, number 9780521744447, January.
    6. Anderson, Kym & Kurzweil, Marianne & Martin, Will & Sandri, Damiano & Valenzuela, Ernesto, 2008. "Measuring distortions to agricultural incentives, revisited," World Trade Review, Cambridge University Press, vol. 7(4), pages 675-704, October.
    7. Roberto Roson & Dominique Van der Mensbrugghe, 2012. "Climate change and economic growth: impacts and interactions," International Journal of Sustainable Economy, Inderscience Enterprises Ltd, vol. 4(3), pages 270-285.
    8. Hertel, Thomas, 1997. "Global Trade Analysis: Modeling and applications," GTAP Books, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University, number 7685, December.
    9. Martin, Will & Mitra, Devashish, 2001. "Productivity Growth and Convergence in Agriculture versus Manufacturing," Economic Development and Cultural Change, University of Chicago Press, vol. 49(2), pages 403-422, January.
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    Cited by:

    1. Kym Anderson, 2016. "Agricultural Trade, Policy Reforms, and Global Food Security," Palgrave Studies in Agricultural Economics and Food Policy, Palgrave Macmillan, number 978-1-137-46925-0, December.
    2. Altvater, Susanne & de Block, Debora & Bouwma, Irene & Dworak, Thomas & Frelih-Larsen, Ana & Görlach, Benjamin & Hermeling, Claudia & Klostermann, Judith & König, Martin & Leitner, Markus & Marinova, , 2012. "Adaptation measures in the EU: Policies, costs, and economic assessment. "Climate Proofing" of key EU policies," ZEW Expertises, ZEW - Leibniz Centre for European Economic Research, number 110558.
    3. Anderson, Kym & Jha, Shikha & Nelgen, Signe & Strutt, Anna, 2012. "Reexamining Policies for Food Security," ADB Economics Working Paper Series 301, Asian Development Bank.

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