Community structure and regeneration types of Neolitsea sericea in Tiantong, Zhejiang Province.

Neolitsea sericea,a rare tree species,is mainly distributed in the Zhoushan Archipelago Region.In Tiantong of Ningbo,the natural distribution of the N.sericea community (1 200 m2) was found within surveying ecological service forests.To determine the structure and quantify the N.sericea community,all woody species within 30 m×30 m quadrats were identified and measured.Then,based on size-class and frequency distribution patterns,woody plant species were categorized into regeneration types.Forty-one species of plants,belonging to 21 families,were recorded in the woody layer with four dominant species.Woody species regeneration was categorized into four types:Inverse-J,Unimodal,Unibar,and L (layering) type,with N.sericea being an Inverse-J type species.Thus,N.sericea,which regenerated through new stems and sprouts,was a long-lived,dominant woody species in the community.The habitat of this shrub community was similar to that of Damao Island,whereas its leaves were mostly like those of Putuo Island.