A fully active carbon cycle acts as a thermostat, regulating a planet's climate. (phys.lsu.edu)
Of course, it makes more economic sense to burn the torrified wood instead of coal, so reducing the proportion of the GP required for sequestering the excess carbon already added to the active carbon cycle. (realclimate.org)
So to reach 350 ppm from just the current level requires removing about 185 GtC from the active carbon cycle. (realclimate.org)