岳麓山风景区藤本植物资源调查研究

岳麓山风景区野生藤本植物共计45种，隶属于23科34属。其基本特点是：蕨类植物1科1属1种；单子叶植物3科3属5种：双子叶植物19科30属39种。在其科属纽成中，单种科和单种属最多，大种科和大种属缺乏。区系成分分析表明．泛热带成分居首位（21．21％），其次是北温带成分（15．15％）、东亚及北美间断成分（15．15％）和热带亚洲成分（12．12％），以热带性成分为主．温带性成分占有一定的比例，具有由亚热带向暖温带过渡的性质。生活型以高位芽藤本29种（64．4％）占优势，其后依次为地上芽藤本7种（15．6％）、地面芽藤本4种（8．9％）、一年生藤本3种（6．7％）和地下芽藤本2种（4．4％），这与亚热带常绿阔叶林生活型谱相接近。藤本植物中以大中型的较多．大多攀附在群落的先锋树种之上。

Resourse Investigation of the Liana in the Yuelu Mt. Scenic Area

There are 45 species wild zianas in the Yuelu Mt.scenic area,subordinating to 34 genera and 23 families.There among,1 family 1 genus 1 species is Pteridophyta;3 families 3 genera 5 species are Monocotyledoneae;19 families 30 genera 39 species are Dicotyledoneae.The single family and genera take the largest port,the diverse family and genera are scarce.In this paper,the flora charalteristics of liana in Yuelu Mt.Scenic Area had been studied.The results showed:the Pan-tropical composition is the largest(21.21%),then is the N.temperate composition(15.15%),After that are the E.Asia & N.Amer.disjuncted(15.15%) and the Trop.Asia(12.12%).The tropical composition is main component,and the temperate composition takes certain proportion,which presents the character of trasiti on from subtropical to warm temperate.29 species Phanerophyte Liane dominates in the life-form;in the nextplace,Chamaephyte Vine 7 species(15.6%),Hemicryptophyte Vine 4 species(8.9%),Therophyte Vine 3 species(6.7%)and Geocryptophyte Vine 2 species(4.4%).The form is close to the life-form of Subtropical Evergreen broad-leaved forest.The large and medium liana are more than others,most of them cling on the pioneer species.