Species abundance distribution was regarded as an important measuring method of species diversity study in Castanopsis kawakamii forest.The log-series model was used to calculate,inspect and draw to illustrate the species abundance of 7 main communities by investigating species amounts of community composition types in C. kawakamii forest,which including ① C.kawakamii+Schima superba+Litsea mollifolia,② C.kawakamii+Daphniphyllum oldhamii+Schima superba,③ C.kawakamii+Quercus glandulifera+Ilex purpurea,④ C.kawakamii pure forest, ⑤Pinus massoniana+Schima superba+Elaeocarpus decipiens,⑥ C.kawakamii+Pinus massoniana+Symplocos stellaris,⑦ Castanopsis eyrei+C. kawakamii+Schima superba. The results showed that species abundance of arbor layer,shrub layer,all woody species of 7 main communities in C.kawakamii forest all obey a logarithmic series distribution.
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