... Wow, an article reporting on an actual scientific study of ethanol's impact! Now THAT is remarkable in itself!
http://www.sacbee.com/2011/07/26/3796298/new-study-finds-us-ethanol-production.htmlA new study published in the July 2011 Biomass and Bioenergy Journal on indirect land use change (ILUC) due to biofuels production indicates that the real impact of U.S. biofuels production on ILUC domestically and internationally is negligible or nonexistent. The study, "Indirect land use change for biofuels: Testing predictions and improving analytical methodologies" was coauthored by Dr. Seungdo Kim and Dr. Bruce E. Dale of Michigan State University. “It is the first evidence-based evaluation of ILUC utilizing actual historic data, employing a 'bottom-up', data-driven, statistical approach based on individual world regions’ land use patterns and commodity grain imports,” stated Dr. Roger Conway, senior partner at Rosslyn Advisors LLC and former director of the United States Department of Agriculture's Office of Energy Policy and New Uses.
Very few previous studies have attempted to find empirical evidence for or against indirect land use change from the historical data. Most previous studies relied on global economic simulations. "Unlike most other ILUC work this study relied on very few assumptions and did not attempt to quantify nor to predict ILUC effects," commented Bruce Dale, coauthor of the study. "We searched for direct historical evidence for ILUC in relevant world areas rather than attempting to project or predict what course ILUC might take. Projecting forward can force scientists to make untestable assumptions."
One interpretation of no ILUC effects is that U.S. crop intensification absorbed and exceeded new ethanol production demand. It is also possible that the effects of biofuels production expansion on ILUC may simply be negligible. Past studies based on economic model assumptions often do not take into account new agricultural techniques that allow for greater crop yields on existing U.S. lands where biofuel corn is produced.
The new study used 1990 -- when the U.S. biofuels industry was very small -- as its baseline and then measured crop changes against that as U.S. ethanol production grew rapidly in subsequent years. In order to test the hypotheses that ILUC had occurred, the authors searched for actual land use change in 18 regions around the world where corn and/or soybeans are produced.
(more)
abstract can be viewed here:
http://www.sciencedirect.com/science/article/pii/S0961953411002418