Carbon concentrations of different organs and intra-species from 17 tree species (Cunninghamia lanceolata, Pinus massoniana,Pinus elliottii,Cupressus funebris,Michelia chapensis,Manglietia insigni,Cinnamomum camphora,Phoebe zhennan, Castanopsis eyre,Cyclobalanopsis glauca, Schima superba,Elaeocarpus decipiens,Symplocos caudate,Liquidambar formosana, Alniphyllum fortune,Populus, and Phyllostachys heterocycla) were studied in the existing forest vegetation in Hunan Province, China. The results show that there was no significant difference among c...