A particular combination of feedstock, pyrolysis technology, energy conversion and byproduct
usage can comprise a biochar-based system. Alternative systems have different
greenhouse gas balances. In Section 3.1.4, economically and politically conceivable systems
for different regions of the world are considered. The future price of carbon and the inclusion
of biochar in carbon-trading schemes is a key factor. The likely additional benefits of biochar
to agricultural production are reviewed in Section 3.2. These factors are critical since they
dictate whether relevant practices are adopted on a large scale through their effect on the
decision making of individual farmers