【摘要】 在对湖南桑植龙潭坪、石门壶瓶山长果安息香种群进行野外调查的基础上,分析了其群落的区系,比较了两地长果安息香分布核心样地的生境、群落特征及物种多样性。结果表明:(1)两个样地共出现维管植物82科153属229种。其中蕨类植物7科11属16种,裸子植物1科1属2种,被子植物74科141属211种;(2)长果安息香区系成分复杂,科级与属级地理成分热带性质较强;(3)长果安息香群落垂直结构复杂,以中小高位芽植物为主;(4)样地植物种类丰富,灌木层的各项物种多样性指数均高于乔木层和草本层。更多还原

【Abstract】 The vegetation data of Changiostyrax raxdolichocarpa population forest in Hupingshan and Sangzhi,Hunan province were used as the information for studying the flora composition and species diversity.The results showed that a total of 82 families(153 genera,229 species) of vascular plants were found within these two sample plot,including 7 families(11 genera,16 species) of peridophyte;1 family(1 genera,2 species) of gymnospperme,74 families(141 genera,211 species) of angiospermae.The floristic elements are complex,strong tropical geographical elements were found at family-level and genus-level.Vertical structure of the community is also complex,dominated by mesophanerophytes and microphanerophytes.The community is rich in plant species,especially the diversity of shrub layer,which were higher than those of the tree layer and herb layer.更多还原