It is useful to consider a biochar-based strategy against more established approaches to
increase the organic carbon stored in soil, such as the use of manures and composts. The
longevity of biochar in the soil is an important element when comparing pyrolysis bioenergy
and biochar production with conventional bioenergy strategies, in mitigating climate change.
However, it is also vital to assess any indirect reduction in net greenhouse gas emissions
from agriculture through the use of biochar. There may be additional benefits arising from the
contribution of biochar to facilitating agricultural development and improving the socioeconomic
circumstances of farmers in developing countries. Figure 9 captures the
complexity of potentially beneficial interactions of biochar in the context of natural cycles and
anthropogenic interventions.