How much land is needed for global food production under scenarios of dietary changes and livestock productivity increases in 2030?
Growing global population figures and per-capita incomes imply an increase in food demand and pressure to expand agricultural land. Agricultural expansion into natural ecosystems affects biodiversity and leads to substantial carbon dioxide emissions. Considerable attention has been paid to prospects for increasing food availability, and limiting agricultural expansion, through higher yields on cropland. In contrast, prospects for efficiency improvements in the entire food-chain and dietary changes toward less land-demanding food have not been explored as extensively. In this study, we present model-based scenarios of global agricultural land use in 2030, as a basis for investigating the potential for land-minimized growth of world food supply through: (i) faster growth in feed-to-food efficiency in animal food production; (ii) decreased food wastage; and (iii) dietary changes in favor of vegetable food and less land-demanding meat. The scenarios are based in part on projections of global food agriculture for 2030 by the Food and Agriculture Organization of the United Nations, FAO. The scenario calculations were carried out by means of a physical model of the global food and agriculture system that calculates the land area and crops/pasture production necessary to provide for a given level of food consumption. In the reference scenario - developed to represent the FAO projections - global agricultural area expands from the current 5.1Â billion ha to 5.4Â billionÂ ha in 2030. In the faster-yet-feasible livestock productivity growth scenario, global agricultural land use decreases to 4.8Â billionÂ ha. In a third scenario, combining the higher productivity growth with a substitution of pork and/or poultry for 20% of ruminant meat, land use drops further, to 4.4Â billionÂ ha. In a fourth scenario, applied mainly to high-income regions, that assumes a minor transition towards vegetarian food (25% decrease in meat consumption) and a somewhat lower food wastage rate, land use in these regions decreases further, by about 15%.
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- David R. Lee & Christopher B. Barrett & John G. McPeak, 2006. "Policy, technology, and management strategies for achieving sustainable agricultural intensification," Agricultural Economics, International Association of Agricultural Economists, vol. 34(2), pages 123-127, 03.
- van Vuuren, Detlef P. & de Vries, Bert & Eickhout, Bas & Kram, Tom, 2004. "Responses to technology and taxes in a simulated world," Energy Economics, Elsevier, vol. 26(4), pages 579-601, July.
- Wirsenius, Stefan, 2003. "Efficiencies and biomass appropriation of food commodities on global and regional levels," Agricultural Systems, Elsevier, vol. 77(3), pages 219-255, September.
- Bender, William H., 1994. "An end use analysis of global food requirements," Food Policy, Elsevier, vol. 19(4), pages 381-395, August.
- Carlsson-Kanyama, Annika & Ekstrom, Marianne Pipping & Shanahan, Helena, 2003. "Food and life cycle energy inputs: consequences of diet and ways to increase efficiency," Ecological Economics, Elsevier, vol. 44(2-3), pages 293-307, March.
- Vincent Gitz & Philippe Ciais, 2004. "Future expansion of agriculture and pasture acts toamplify atmospheric CO2 levels in response to fossilfuel and land-use change emissions," Post-Print halshs-00009828, HAL.
- Gerbens-Leenes, P. W. & Nonhebel, S., 2002. "Consumption patterns and their effects on land required for food," Ecological Economics, Elsevier, vol. 42(1-2), pages 185-199, August.
- Simla Tokgoz & Amani Elobeid & Jacinto F. Fabiosa & Dermot J. Hayes & Bruce A. Babcock & Tun-Hsiang (Edward) Yu & Fengxia Dong & Chad E. Hart & John C. Beghin, 2007.
"Emerging Biofuels: Outlook of Effects on U.S. Grain, Oilseed, and Livestock Markets,"
Center for Agricultural and Rural Development (CARD) Publications
07-sr101, Center for Agricultural and Rural Development (CARD) at Iowa State University.
- Simla Tokgoz & Amani Elobeid & Jacinto F. Fabiosa & Dermot J. Hayes & Bruce A. Babcock & Tun-Hsiang (Edward) Yu & Fengxia Dong & Chad E. Hart & John C. Beghin, 2007. "Emerging Biofuels: Outlook of Effects on U.S. Grain, Oilseed, and Livestock Markets," Food and Agricultural Policy Research Institute (FAPRI) Publications 07-sr101, Food and Agricultural Policy Research Institute (FAPRI) at Iowa State University.
- Uwe Schneider & Bruce McCarl, 2003.
"Economic Potential of Biomass Based Fuels for Greenhouse Gas Emission Mitigation,"
Environmental & Resource Economics,
European Association of Environmental and Resource Economists, vol. 24(4), pages 291-312, April.
- Uwe A. Schneider & Bruce A. McCarl, 2001. "Economic Potential of Biomass-Based Fuels for Greenhouse Gas Emission Mitigation," Center for Agricultural and Rural Development (CARD) Publications 01-wp280, Center for Agricultural and Rural Development (CARD) at Iowa State University.
- Pingali, Prabhu L. & Heisey, Paul W., 1999. "Cereal Crop Productivity in Developing Countries: Past Trends and Future Prospects," Economics Working Papers 7682, CIMMYT: International Maize and Wheat Improvement Center.
- Keyzer, M.A. & Merbis, M.D. & Pavel, I.F.P.W. & van Wesenbeeck, C.F.A., 2005. "Diet shifts towards meat and the effects on cereal use: can we feed the animals in 2030?," Ecological Economics, Elsevier, vol. 55(2), pages 187-202, November.
- Hazell, P.B.R., ed. & Pachauri, R. K., ed., 2006. "Bioenergy and agriculture: promises and challenges," 2020 vision focus 14, International Food Policy Research Institute (IFPRI).
- Hazell, P.B.R. & Pachauri, J. K., 2006. "Overview: bioenergy and agriculture promises and challenges," 2020 vision briefs 14(1), International Food Policy Research Institute (IFPRI).
- Engstrom, Rebecka & Carlsson-Kanyama, Annika, 2004. "Food losses in food service institutions Examples from Sweden," Food Policy, Elsevier, vol. 29(3), pages 203-213, June.
- de Boer, Joop & Helms, Martine & Aiking, Harry, 2006. "Protein consumption and sustainability: Diet diversity in EU-15," Ecological Economics, Elsevier, vol. 59(3), pages 267-274, September.
- von Braun, Joachim, 2007. "The world food situation: New driving forces and required actions," Food policy reports 18, International Food Policy Research Institute (IFPRI).
- Bouwman, A.F. & Van der Hoek, K.W. & Eickhout, B. & Soenario, I., 2005. "Exploring changes in world ruminant production systems," Agricultural Systems, Elsevier, vol. 84(2), pages 121-153, May.
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