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Options to reduce the environmental effects of livestock production – Comparison of two economic models

Listed author(s):
  • Stehfest, Elke
  • Berg, Maurits van den
  • Woltjer, Geert
  • Msangi, Siwa
  • Westhoek, Henk

Global livestock production accounts for about 80% of global land use, is one of the main drivers of biodiversity loss, and is responsible for about 18% of global greenhouse gas emissions. These impacts are likely to become more pressing as a consequence of rising demands for meat, eggs and dairy products. Theoretically, these impacts could be reduced by making the global food system more efficient or by dietary changes, as recent studies suggest. However, multiple feedbacks exist in the agricultural system, which may reduce the effectiveness of any promising change. Estimation of these effects is highly uncertain and depends on the tools applied. In this study, we used two different economic models (IMPACT and LEITAP), coupled to the integrated assessment model IMAGE, to examine different options to reduce the environmental impact of agriculture: dietary changes (less meat and dairy), increased production efficiency, and reduced food waste. In a detailed model comparison, we assessed the model results on consumption, agricultural production, commodity prices, land-use change and greenhouse gas emissions, and identified feedbacks in the global agricultural system. In both models, all options resulted in a reduction in agricultural land use and greenhouse gas emissions, as well as in agricultural commodity prices. The model results show that for most options less than the theoretical environmental gains would actually be achieved, due to price feedbacks leading to increased consumption and less intensive production. On the other hand, larger than expected effects could occur as a result of reduced European consumption.

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Article provided by Elsevier in its journal Agricultural Systems.

Volume (Year): 114 (2013)
Issue (Month): C ()
Pages: 38-53

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Handle: RePEc:eee:agisys:v:114:y:2013:i:c:p:38-53
DOI: 10.1016/j.agsy.2012.07.002
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  1. 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.
  2. Kantor, Linda Scott & Lipton, Kathryn & Manchester, Alden & Oliveira, Victor, 1997. "Estimating and Addressing America's Food Losses," Food Review: The Magazine of Food Economics, United States Department of Agriculture, Economic Research Service, vol. 20(1).
  3. Hertel, Thomas W., 2010. "The Global Supply and Demand for Agricultural Land in 2050: A Perfect Storm in the Making?," 2010 Annual Meeting, July 25-27, 2010, Denver, Colorado 92639, Agricultural and Applied Economics Association.
  4. Martin Banse & Hans van Meijl & Andrzej Tabeau & Geert Woltjer, 2008. "Will EU biofuel policies affect global agricultural markets?," European Review of Agricultural Economics, Foundation for the European Review of Agricultural Economics, vol. 35(2), pages 117-141, June.
  5. Arnold Tukker & Sandra Bausch-Goldbohm & Marieke Verheijden & Arjan de Koning & René Kleijn & Oliver Wolf & Ignacio Pérez Domínguez, 2009. "Environmental Impacts of Diet Changes in the EU," JRC Working Papers JRC50544, Joint Research Centre (Seville site).
  6. Conforti, Piero & Londero, Pierluigi, 2001. "Aglink: The Oecd Partial Equilibrium Model," Working Papers 14808, National Institute of Agricultural Economics, Italy – INEA, Osservatorio Sulle Politiche Agricole dell'UE.
  7. Thomas W. Hertel, 2011. "The Global Supply and Demand for Agricultural Land in 2050: A Perfect Storm in the Making?-super- 1," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 93(2), pages 259-275.
  8. Conforti, Piero & Londero, Pierluigi, 2001. "Aglink: The Oecd Partial Equilibrium Model," Working Papers 14808, National Institute of Agricultural Economics, Italy INEA, Osservatorio Sulle Politiche Agricole dell'UE.
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