Abstract:The accumulation and distribution of carbon were st udied for two communities of Castanopsis chinensis, Cryptocarya concinna (CC CC, > 400 year old) and of Cryptocarya concinna, Lindera chunii (CCLC, > 5 0 year old) in a lower subtropical evergreen broad-leaved forest of a MAB bio sp here reserve of China. Carbon concentrations distributed among plant organs and layers in a similar pattern for these two communities, with a mean value (%) of 41 980 in CCCC community and 40 377 in CCLC community. The to...