Guant and
Lehmann, 2008; Laird, 2008). Biochar may persist in soil for millennia because it is very
resistant to microbial decomposition and mineralization. This particular characteristic of
biochar depends strongly on its properties, which is affected in turn by the pyrolysis
conditions and the type of feedstock used in its production. Previous studies indicate that a
bioenergy strategy that includes the use of biochar in soil not only leads to a net
sequestration of CO2 (Woolf et al., 2010), but also may decrease emissions of other more
potent greenhouse gases such as N2O and CH4