The Role of Irrigation in Determining the Global Land Use Impacts of Biofuels
In 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.
|Date of creation:||2011|
|Note:||GTAP Working Paper No. 65|
|Contact details of provider:|| Postal: 1145 Krannert Building, West Lafayette, IN 47907-1145|
Phone: (765) 494-4267
Fax: 765 494-9176
Web page: http://www.gtap.agecon.purdue.edu/
More information through EDIRC
When requesting a correction, please mention this item's handle: RePEc:gta:workpp:3743. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Jeremy Douglas)
If references are entirely missing, you can add them using this form.