The trends with much faster mineralisation rate of total C and
biochar C during the initial days followed by a sharp decline are
consistent with other published studies Following the depletion of labile C, the
more recalcitrant C was left in the soilebiochar systems which
resulted in the dramatic reduction in the biochar C (and total C)
mineralisation rate. The continued biochar C mineralisation may be
due to changes in microbial abundance and diversity based on
available C sources