The Role of Irrigation in Determining the Global Land Use Impacts of Biofuels
AbstractIn recent years there has been a flurry of activity aimed at evaluating the land use consequences of biofuels programs and the associated carbon releases. In this paper we argue that these studies have tended to underestimate the ensuing land use emissions, because they have ignored the role of irrigation, and associated constraints on cropland expansion. In this paper, we develop a new general equilibrium model which distinguishes irrigated and rainfed cropping industries at a global scale. Using the new model we evaluate the implications of land use change due to US ethanol programs, in the context of physical constraints on the expansion of irrigated cropland. We find that models which mingle irrigated and rainfed areas underestimate the global land use changes induced due to the US ethanol expansion by about 5.7%. They tend to underestimate the corresponding land use emissions by more than one fifth.
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Bibliographic InfoPaper provided by Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University in its series GTAP Working Papers with number 3743.
Date of creation: 2011
Date of revision:
Note: GTAP Working Paper No. 65
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- Taheripour, Farzad & Hertel, Thomas W. & Liu, Jing, 2011. "The Role of Irrigation in Determining the Global Land Use Impacts of Biofuels," 2011 Annual Meeting, July 24-26, 2011, Pittsburgh, Pennsylvania, Agricultural and Applied Economics Association 103843, Agricultural and Applied Economics Association.
- NEP-AGR-2011-12-19 (Agricultural Economics)
- NEP-ALL-2011-12-19 (All new papers)
- NEP-ENE-2011-12-19 (Energy Economics)
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