广西特有濒危植物狭叶坡垒群落特征研究

狭叶坡垒(Hopea chinensis)是国家二级重点保护植物,仅分布于广西十万大山。通过野外实地调查对狭叶坡垒群落特征的研究表明:在10个样点共3 200 m2的样方中,包含维管束植物82科168属265种,这些属可划分成11个分布区类型,其中热带分布的属占绝对优势,达83.7%,温带分布属占13.1%。群落生活型以高位芽植物为主,外貌主要由中小型为主的常绿高位芽植物所决定。狭叶坡垒群落结构复杂,可分为乔木层、灌木层和草本层3个层次,层间植物丰富。

Characteristics of Hopea chinensis Community,an Endemic and Endangered Species in Guangxi

Hopea chinensis which belongs one of the second class national protected plants,is only distributed in Shiwandashan in Guangxi.The study on the feature of Hopea chinensis community showed that:There are 265 species of vascular plants belonging to 168 genera and 82 families in 10 plots with an area of 3 200 m2.The floral composition can be divided into 11 areal types.83.7% of the genera are the tropical elements,and 13.1% are the temperate elements.According to Raunkiaer's classification system of life form,the phanerophytes are rich in this community.The appearance of community was characterized by the evergreen broadleaved phanerophytes.The community structure is complicated and could be divided into arbor,shrub and herb layer with rich interstater plants.