by Chieh-Hsin Chen
According to various economic and environmental estimations, it is highly possible that future global energy demand will increase up to 250% by 2050, which cannot be met using current available natural fuel sources. Biofuels have been proposed as a potential low-carbon energy source that may help assist in meeting energy demands; as well as improving greenhouse gas emission problem from fossil fuel combustion. Hallgren et al. (2013) used various assessment models that link an economic model with climate, biogeochemistry, and biogeophysics models to examine the effects of possible land use changes from an expanded biofuel program over the first half of 21st century. The results show that overall, the biogeochemical and biogeophysical impacts of increased biofuel production are negligible from a global perspective; the models do show regional patterns of climate change resulting in the Amazon Basin and parts of the Congo Basin.
Hallgren, W, CA, Schlosser., E, Monier., D, Kicklighter., A, Sokolov., J, Melilo., 2013. Climate Impact of a Large-Scale Biofuel Expansion. Geophysical Research Letter 40, 1624−1630 http://bit.ly/1tWkasp