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Climate Change and Food Security to 2030: A Global Economy-wide Perspective

Author

Listed:
  • Ernesto Valenzuela

    () (Centre for International Economic Studies, School of Economics, University of Adelaide)

  • Kym Anderson

    () (Centre for International Economic Studies, School of Economics, University of Adelaide)

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 who comprise most of the worldÂ’s poor and whose crop productivity is expected to fall. The present study uses a global economy-wide model to assess the expected (in some cases positive) effects on temperate zone crop productivity and 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 in the tropics on the productivity of unskilled workers in developing countries. The net effect of those combined shocks on the agricultural sectorÂ’s competitiveness in any developing country is an economy-wide empirical matter, since unskilled workers are employed in nonfarm as well as farm activities. Given the degrees of uncertainty about plausible effects of climate change, our modelling accounts for a range of yield productivity and labor shocks. The results provide a range of consequences for international agricultural prices and for national food consumption, net farm income and economic welfare.

Suggested Citation

  • Ernesto Valenzuela & Kym Anderson, 2011. "Climate Change and Food Security to 2030: A Global Economy-wide Perspective," Centre for International Economic Studies Working Papers 2011-02, University of Adelaide, Centre for International Economic Studies.
  • Handle: RePEc:adl:cieswp:2011-02
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    File URL: http://www.adelaide.edu.au/cies/publications/present/CIES_DP1102.pdf
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    References listed on IDEAS

    as
    1. Thomas W. Hertel & Jayson Beckman, 2011. "Commodity Price Volatility in the Biofuel Era: An Examination of the Linkage between Energy and Agricultural Markets," NBER Chapters,in: The Intended and Unintended Effects of U.S. Agricultural and Biotechnology Policies, pages 189-221 National Bureau of Economic Research, Inc.
    2. 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.
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    4. Kym Anderson, 2009. "Distorted Agricultural Incentives and Economic Development: Asia's Experience," The World Economy, Wiley Blackwell, vol. 32(3), pages 351-384, March.
    5. 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.
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    11. Golub, Alla & Hertel, Thomas & Taheripour, Farzad & Tyner, Wally, 2010. "Modeling Biofuels Policies in General Equilibrium: Insights, Pitfalls and Opportunities," GTAP Working Papers 3406, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
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    More about this item

    Keywords

    Climate change; crop and labour productivity growth; global economy-wide model projections;

    JEL classification:

    • D58 - Microeconomics - - General Equilibrium and Disequilibrium - - - Computable and Other Applied General Equilibrium Models
    • F17 - International Economics - - Trade - - - Trade Forecasting and Simulation
    • Q17 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agriculture in International Trade
    • Q24 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Land
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming

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