We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Impact of second-generation biofuel agriculture on greenhouse-gas emissions in the corn-growing regions of the US.
- Authors
Davis, Sarah C.; Parton, William J.; Del Grosso, Stephen J.; Keough, Cindy; Marx, Ernest; Adler, Paul R.; DeLucia, Evan H.
- Abstract
In the US, 95% of biofuel is produced from corn (Zea mays L), an intensively managed annual crop that is also grown for food and animal feed. Using the DAYCENT model, we estimated the effects on ecosystem services of replacing corn ethanol feedstocks with the perennial cellulosic feedstocks switchgrass (Panicum virgatum L) and miscanthus (Miscanthus × giganteus Greef et Deuter). If cellulosic feedstocks were planted on cropland that is currently used for ethanol production in the US, more ethanol (+82%) and grain for food (+4%) could be produced while at the same time reducing nitrogen leaching (-15 to -22%) and greenhouse-gas (GHG) emissions (-29 to -473%). The GHG reduction was large even after accounting for emissions associated with indirect landuse change. Conversion from a high-input annual crop to a low-input perennial crop for biofuel production can thus transition the central US from a net source to a net sink for GHGs.
- Subjects
UNITED States; BIOMASS energy; GREENHOUSE gases; EMISSIONS (Air pollution); CORN growth; FEEDSTOCK
- Publication
Frontiers in Ecology & the Environment, 2012, Vol 10, Issue 2, p69
- ISSN
1540-9295
- Publication type
Article
- DOI
10.1890/110003