浙江庆元槠栲林的群落学特征

Characteristics of communities of the forests dominated by Castanopsis species in Qingyuan County of Zhejiang Province

利用样方法对浙江省庆元县槠栲林的群落学特征进行了分析。该槠栲林主要分为甜槠〔Castanopsiseyrei(Champ.exBenth.)Tutch.〕林〔含甜槠 木荷(SchimasuperbaGardn.etChamp.)林〕、栲(C.fargesiiFranch.)林、米槠〔C.carlesii(Hemsl.)Hayata〕林、罗浮栲(C.fabriiHance)林、南岭栲(C.fordiiHance)林5个类型,并对各个群落类型的特征作了详细的描述。年龄结构分析表明:甜槠林和米槠林为金字塔形结构;南岭栲林为纺锤形结构;罗浮栲林和甜槠 木荷林部分年龄结构缺失;栲林既有金字塔形,也有年龄结构缺失的类型。从幼苗和幼树数量分析,大多类型更新情况良好,罗浮栲林和南岭栲林更新情况较差。

The classification of vegetation types and community characteristics of forests dominated by Castanopsis (D. Don) Spach species in Qingyuan County of Zhejiang Province were analysed by the quadrat method. The forest could be divided into five types: C. eyrei (Champ. ex Benth.) Tutch. community (containning C. eyrei-Schima superba Gardn. et Champ. community), C. fargesii Franch. community, C. carlesii (Hemsl.) Hayata community, C. fabrii Hance community and C. fordii Hance community. Main characteristics of each community were described. Analysis results of the age structure showed that C. eyrei and C. carlesii communities were pyramid-like forms, C. fordii community spindle-like form, C. fabrii and C. eyrei-Schima superba communities absent in some age structures, while C. fargesii community was pyramid-like form or absent. Quantity of seedlings and saplings indicate that development of C. fordii and C. fabrii communities are not prosperous.