Community Structure Features of Davidia involucrata var.vilmoriniana(Davidiaceae) in Changyang county Hubei Province
LIANG Hong-wei1,2, HUANG Guangqiang3, WANG Yubing2, CHEN Faju2, LI Fenglan1
1. College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; 2. Biotechnology Research Center of China Three Gorges University，Yichang 443002, China; 3. Changyang Forestry Bureau of Hubei Province, Changyang 443500, China,
Based on field data,we analyzed the community structure of Davidia involucrata var.vilmoriniana(Davidiaceae) in Changyang County,Hubei Province.The results showed 238 species of vascular plants in 170 genera and 81 families were present in an area of 2900m2,including seven endangered species such as Dipteronia sinensis,Tetracentron sinense,Pterostyrax hispidus,Euptelea pleiospermum,Cercidiphyllum japonicum,Aesculus wilsonii and Panax pseudoginseng var.japonicus.The floral plantage of the population was abundant,ancient,and highly endemic.The life form of the community was dominated by phanerophyte(47.06%),leave size by mesophyll(68.07%),leaf type by single leaf(78.99%),and leaf texture by herbaceous(67.12%).The vertical structure was complex with layers mainly consisting of trees,shrubs,herbs,and interlayer plants.Analysis of age and height structures revealed a poor regeneration and shrinkage of the population.
