A link to this report showed up in my inbox a while back.
#31. Accounting for Greenhouse Gas Emissions from Wood Bioenergy. Jay O’Laughlin (September 2010).
The utilization of woody biomass to produce energy is accompanied by concerns about sustainable forest management and greenhouse gas (GHG) emissions from burning biomass. The conversion, or potential conversion, of land from native forest to biofuel crops has led to reconsideration of emissions accounting practices. This report critiques and responds to the Biomass Sustainability and Carbon Policy Study commissioned by the Massachusetts Department of Energy Resources and conducted by the Manomet Center for Conservation Sciences. This report is designed to respond to a call for information by the U.S. Environmental Protection Agency as it reconsiders how GHG emissions from biomass combustion should be treated under its regulatory
responsibilities. Full report in PDF format.