since rainforest deforestation actually decreased during the same time period when ethanol production rapidly increased it's hard to say ethanol production directly irrevocably causes deforestation. What these data show it that when the rainforest is protected with enforcement actions deforestation decreases.
As Mongabay site indicates the biggest cause of deforestation is cattle farmers clearing forest to provide land for their cattle to graze on. That's why I said, seriously, if anyone is concerned about deforestation the best thing they can do to affect those market forces which do impact rainforests is to reduce their consumption of beef. If we cut back beef consumption 10% it
would have an affect.
Here's some interesting information re Brazil and sugar-cane cultivation:
http://www.brazil.org.uk/publications/index_files/mythsvsfacts.pdfMost sugarcane for ethanol production (90%) is harvested in South-Central Brazil, over
2,500 km (1,550 miles) from the Amazon. The remainder (10%) is grown in Northeastern
Brazil, about the same distance from the Amazon’s easternmost fringe. That is roughly
the distance between New York City and Dallas, or between Paris and Moscow.
There
is a very tiny production of sugarcane in the Amazon (less than 0.2% of Brazilian total
production) that is processed at four mills that were built more than 20 years ago at a
time when the government provided fiscal incentives to set up industrial facilities in this
region to supply the local market. Without subsidies these mills would not have been
economically viable since the Amazon region does not offer favorable conditions for
commercial sugarcane production. For this reason, future expansion is anticipated to
continue in South-Central Brazil, primarily in degraded pastures. And BTW, an area the size of TEXAS has been set aside in virgin Brazilian rainforest for oil exploration. When they explore a region for oil, roads are put into the forest (up to hundreds of miles) to get test drilling equipment in. Once roads are put in - illegal tree cutting operations quickly denude an area of trees (except for those too small to be of commercial value) extending about a quarter mile or more on both sides of the roads. Putting in roads is a guaranteed way of increasing deforestation...whether or not oil is ever found in that area.
Of course, if oil is found it is bad for the rainforests as people and equipment are brought in. Drilling the oil wells destroys an area around each well as they dump sludge and unusable crud that comes up out of the well before the oil comes up (actually, even where oil is not found, test drills leave ponds of toxic crud too). Ponds of this stuff remain for years which fouls an area much greater than that of the ponds themselves. Inevitably the during rainy periods the ponds overflow and the sludge ends up in nearby streams and rivers causing further environmental damage, even miles away down the river or stream.