Study On Plant Resources And Flora Characteristics Of Dayunwu Mountain

Through field investigations and literature review,studied on the plant resource composition and flora distribution types of Dayunwu Mountain,and discussed the classification and vegetation types of rare and endangered plants and plant resources in This area,the research results are as follows:1.A total of 903 species of 510 genera(including 61 species of cultivated or susceptible plants and 842 species of wild vascular plants)were recorded.Including ferns,29 families,50 genera and 86 species,Gymnosperm,3 families,3 genera,5 species,812 species of 457 genera of 138 families of angiosperms,among them,dicotyledonous plants,101 families,311 genera and 446 species,Monocotyledonous plants,12 families,78 genera,123 species.Plant life types can be roughly divided into four types.2.Rich in ferns,Pteridaceae is a dominant family,Pteris and Selaginella are dominant genus,widowed species and oligospecies are clearly dominant.The distribution types of families and genera are mainly tropical components,the pantropical distribution is the highest proportion of ingredients,63.16% and 52.50% respectively,Flora with distinct tropical properties.3.The dominant species of seed plants are Gramineae,Papilionoideae,Euphorbiaceae,Rubiaceae,Compositae,etc,there are 251 species of 133 genera,accounting for 30.93% and 33.20% of the number and species of seed plants.The dominant genus is genus and cone genus,containing 27 species,accounting for 3.57% of the species.The plant species and genus of Dayunwu Mountain are the highest in pan-tropical distribution,with 60.20% and 32.40% respectively,the tropical components are 78.49% and 80.00%,respectively,with distinct tropical properties.The comparison between Dayunwu Mountain and other adjacent protected areas shows that,the nature of the distribution components of flora is closely related to the distribution of land and land and the latitude.4.There are 6 species,15 genera and 17 species of rare and endangered wild protected plants.Among them,Cibotium barometz,Alsophila spinulosa,Alsophila podophylla,Cinnamomum camphora,Toona ciliata,and Erythrophleum fordii are listed in the "National Key Protected Wild Plants" list(the first batch)of protected plants.12 species such as Bulbophyllum kwangtungense,Goodyera schlechtendaliana,Habenaria rhodocheila,and Liparis bootanensis are listed in Appendix II of the Convention on International Trade in Endangered Species of Wild Fauna and Flora(CITES).These plants are mainly distributed in the core area and in the buffer zone of evergreen broad-leaved forests with high degree of canopy or gully.The plant resources of Dayunwu Mountain are divided into 11 categories according to different economic uses,namely ornamental plants,medicinal plants,fiber plants,oil plants,tanning plants,timber plants,aromatic plants,edible plants,feed plants,poisonous plants and Honey source plants.