IPCC Fourth Assessment Report: Climate Change 2007
Climate Change 2007: Working Group III: Mitigation of Climate Change

´╗┐Figure 4.14: World biomass energy flows (EJ/yr) in 2004 and their thermochemical and biochemical conversion routes to produce heat, electricity and biofuels for use by the major sectors.

´╗┐Note: much of the data is very uncertain, although a useful indication of biomass resource flows and bioenergy outputs still results.