井冈山自然保护区栲属群落植物区系分析

井冈山自然保护区栲属群落的维管植物75科132属214种，其中蕨类植物有14科19属34种，裸子植物3科4属4种，被子植物58科109属186种。区系分析显示该植物区系起源石老，保留有大量第四纪冰前期区系万分；地理成分复杂，以热带亚热带成分为主，温带成分占有一定比例；珍稀涉危植物和特有植物丰富。植被组成中以壳斗科栲属的植物为优势种，乔木层的主要伴生种有木兰科、樟科、山茶科等科的常绿树种；主要灌木有柃木、杜茎山、草珊瑚、多花山竹子等；草本以淡竹叶、苔草、贯众、鳞毛蕨、狗脊蕨等为主。

Floristic Analysis of Castanopsis Communities in Jinggang Mountain

There are 214 species (including varieties)of vascular plants in the Castanopsis communities in Jinggang Mountain Nature Reserve,belonging to 75 families and 132 genera,in which the pteridophyte account for 14 families,19 genera and 24 species,the gymnosperm for 3 families,4 genera and 4 species,and the angiosperm for 58 families,109 genera and 186 species.The floristic analysis shows that the flora possess some species originated before Quaterary,the geographical composition of the flora is complex,the tropical and sub-tropical components take a big part of the whole vascular plants,there are also some temperate-originated species,many rare and endangered plants and endemic plants were found.The Castanopsis plants are dominant in the vegetation,the companion species in tree layer mainly are plants of Magnoliaceae,Lauraceae,Camelliaceae which are evergreen,the shrub found in the community are chiefly Eurya japonica,Maesa japonica,Sarcandra glabra,Garcinia multiflora.Lophatherum gracile,Carex doniana,Woodwardia japonica,Dryopteris atrata dominated the whole herb layer.