Biofuels in the world markets: A Computable General Equilibrium assessment of environmental costs related to land use changes
There is rising scepticism about the potential positive environmental impacts of first generation biofuels. Growing biofuels crops could induce diversion of other crops dedicated to food and feed needs. The relocation of production could increase deforestation and bring significant new volumes of carbon into the atmosphere. In this paper, we develop a methodology for assessing indirect land use effects related to biofuels policies in a Computable General Equilibrium framework. We rely on the trade policy model MIRAGE and on the GTAP 7 database, both of which have been modified and improved for this purpose. The model explicitly represents the role of different types of biofuel feedstock crops, energy demand, and carbon emissions. Land use changes are represented at the level of Agro-Ecological Zones in a dynamic framework using land substitution with nesting of Constant Elasticity of Transformation functions and a land supply module taking into account the effects of economic land expansion. In this integrated global approach, we capture the environmental cost of different land conversion due to biofuels in the carbon budget, taking into account both direct and indirect CO2 emissions related to land use change. We apply this methodology in looking at the impacts of biofuel (ethanol) policies for transportation in the United States and in the European Union with and without ethanol trade liberalization. We find that emissions released because of ethanol programs significantly worsen the total carbon balance of biofuel policies. Ethanol trade liberalisation benefits are ambiguous and depend highly on the parameters governing land use change, in Brazil in particular. We conclude by pointing out the critical aspects that have to be refined in order to improve our understanding of the environmental implications of biofuels development.
|Date of creation:||Nov 2009|
|Date of revision:||Nov 2009|
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- Seale, James & Regmi, Anita & Bernstein, Jason, 2003.
"International Evidence on Food Consumption Patterns,"
184321, United States Department of Agriculture, Economic Research Service.
- Seale, James L., Jr. & Regmi, Anita & Bernstein, Jason, 2003. "International Evidence On Food Consumption Patterns," Technical Bulletins 33580, United States Department of Agriculture, Economic Research Service.
- Gurgel Angelo & Reilly John M & Paltsev Sergey, 2007. "Potential Land Use Implications of a Global Biofuels Industry," Journal of Agricultural & Food Industrial Organization, De Gruyter, vol. 5(2), pages 1-36, December.
- Hertel, Thomas & Tyner, Wally & Birur, Dileep, 2008. "Biofuels for all? Understanding the Global Impacts of Multinational Mandates," GTAP Working Papers 2809, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
- Hertel, Thomas W. & Tyner, Wallace E. & Birur, Dileep K., 2008. "Biofuels for all? Understanding the Global Impacts of Multinational Mandates," 2008 Annual Meeting, July 27-29, 2008, Orlando, Florida 6526, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
- 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.
- Golub, Alla & Hertel, Thomas & Sohngen, Brent, 2008. "Land Use Modeling in Recursively-Dynamic GTAP Framework," GTAP Working Papers 2609, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
- Lee, Huey-Lin & Hertel, Thomas & Rose, Steven & Avetisyan, Misak, 2008. "An Integrated Global Land Use Data Base for CGE Analysis of Climate Policy Options," GTAP Working Papers 2603, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
- Yvan Decreux & Hugo Valin, 2007. "MIRAGE, Updated Version of the Model for Trade Policy Analysis: Focus on Agriculture and Dynamics," Working Papers 2007-15, CEPII research center.
- Decreux, Yvan & Valin, Hugo, 2007. "MIRAGE, Updated Version of the Model for Trade Policy Analysis: Focus on Agriculture and Dynamics," Working Papers 7284, TRADEAG - Agricultural Trade Agreements.
- Banse, Martin & van Meijl, Hans & Tabeau, Andrzej A. & Woltjer, Geert B., 2008. "Impact of EU Biofuel Policies on World Agricultural and Food Markets," 107th Seminar, January 30-February 1, 2008, Sevilla, Spain 6476, European Association of Agricultural Economists. Full references (including those not matched with items on IDEAS)