The forest dominated by Cyclobalanopsis glauca is a main subtropical evergreen broad-leaved forest type in South-East China.Carbon dynamics including the concentration,standing crop,retention,return amount via litterfall and release amount is studied.The results show that:The concentration of carbon is higher in spring and summer,leaf and the tree layer,and lower in fall and winter, root and the herb layer.The standing crop of carbon is 66.11t/hm2, and it focuses on the tree layer or evergreen species.The r...