Although up to this point our study has identified stem DBH and
wood specific gravity as important variables in aboveground carbon
accumulation, it has not explained how they contributed to
the aboveground carbon offset additionality of mixed indigenous
plantation over old-growth secondary forest given that the two
forest types had largely similar tree species richness and stand
age. The larger stem DBH of mixed indigenous plantation is likely
to have occurred as a result of steady growth and persistence of
planted trees in this plantation as opposed to the simultaneous
recruitment and mortality of tree stems over several stages of successional
change in the old-growth secondary forest. As illustrated
by