Species abundance distribution was regarded as an important measuring method of species diversity study inCastanopsis kawakamii forest. The log-series model was used to calculate, inspect and draw to illustrate the species abun-dance of 7 main communities by investigating species amounts of community composition types in C. kawakamii forest,which including ( 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, (5 Pinus massoni-ana+ Schima superba + Elaeocarpus decipiens , ⑥ C . kawakamii + Pinus massoniana + Symplocos stellaris , (7 Castanopsiseyrei + C. kawakamii + Schima superba. The results showed that species abundance of arbor layer, shrub layer, all woodyspecies of 7 main communities in C. kawakamii forest all obey a logarithmic series distribution.
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