Thursday, February 3, 2011

The Pros and Cons of Cornfields vs. Oilfields

2 comments:

colluvial,  Feb 6, 2011, 8:37:00 AM  

I continue to be suspicious about the bookkeeping methods used for determining the advantages and disadvantages of producing ethanol. The important question that is rarely addressed is, "How much surplus energy is produced by the ethanol process once you subtract out what's required for ag equipment and its fuel, fertilizers, pesticides, the power required by the processing plant for preparing, fermenting, and distilling the finished product, and so on?" This cartoon seems to assume that it doesn't take any energy to produce ethanol. To top this off, there's no attempt to address the carbon footprint effects of shifting marginal cropland back into production from pasture, hay, or conservation.

Madhu Feb 6, 2011, 10:49:00 AM  

That is indeed a glaring hole in this cartoon! The entire fossil-fuel base of ethanol-from-corn production is externalized. As indeed - as you rightly point out -is the land and associated habitat costs of conversion to cornfields. I think this would make a good critical thinking exercise for students in environment / economics classes.

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A blog about studying and applying evolutionary ecology in human-dominated landscapes from the Reconciliation Ecology Lab at California State University, Fresno

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