The quantification of biomass carbon pools is important for understanding carbon cycling in
forest ecosystems. This study was designed to reveal the effects of stand age on biomass partitioning and
carbon storage of Chinese fir plantation stands in Dabie Mountains of Anhui, East China. A total of six
even-aged Chinese fir plantation stands along an age-sequence from 10 to 50 years were selected. To quantify
the biomass of different tree components, 18 trees with diameter at breast height (D1.3) from 6.5 to
35.2 cm were harvested from the different aged stands. Biomasses of understory vegetation, forest floor and
standing dead trees were also investigated. Total biomass carbon storages ranged from 57.6 to 211.4 Mg
ha–1 in the different aged stands. Tree layer comprised from 93.7% to 96.4% of the total biomass C pools in
the different aged stands. The C pools of the necromass were from 1.8 to 6.2 Mg ha–1. Stand age had a significant
effect on tree biomass partitioning, with an increase in proportion of root biomass. The root/shoot
ratios were from 0.187 to 0.312, which was significantly positively correlated to stand age. The existing
plantation stands are still developing and have somewhat high rate of biomass and carbon accumulations
beyond the normal rotation period (usually 25–30 years) even over an age of 50 years. Appropriate prolongation
of the rotation period of Chinese fir plantation will be effective in maintaining long-term productivity
and providing large carbon sink. The measurements provide valuable data for modelling productivity of
Chinese fir plantation forest.
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