Abstract:The nitrogen concentration of various organs of 44 plant individuals belonging to 20 species, the nitrogen accumulation and distribution, and the nitrogen biocycling in a Monsoon Evergreen Broad-leafed Forest-the Cryptocarya concinna, Lindera chunii Community of Dinghushan were measured by this study following the study on biomass and net primary productivity of the community. The nitrogen storage(kg·ha-1) in the vegetation was 1021.14, of which 986.64 in arbor layer, 5.57 in shrub layer, 9.58 in herb layer and 19.35 in woody lianas. Nitrogen absorption, returning and annual accumulation in the community were 215.52, 172.19 and 43.33 kg·ha-1·yr-1, respectively. Higher recycling coefficient and short turnover time indicated the characteristics of fast material cycling in southern subtropical area and community that we studied is in a stage of vigorous growth.