Biodiversity of Wild Woody Vine Resources in Yunshan,Hunan

To get more in-depth understanding the status of wide woody liana resources and their diversities in the Southwest of Hunan,we systematically investigated the ecological characteristics of wild woody vine plants in Yunshan.The results show that:(1)There are 308wild woody vine species in total,belonging to 101genera and 39families,which account for 20.29%of all species,9.32%of all genera and 19.21%of all families of seed-plants,respectively,in Yunshan,Hunan.Among all these woody vine plants,there is 1species of gymnosperm,while there are 307species,belonging to 100genera and 38families of Angiosperm. However,fern is absent from this area.(2)In terms of life-form,phanerophyte liana dominate,accounting for 93.51% of overall species,while the minorities include underground buds,hemicryptophytes and chamaephytes vine,accounting for 4.87%,0.97% and 0.65% of overall species,respectively.(3)In terms of climbing style,the majority are twining lianas,accounting for 42.86% of overall species,while the minorities include hooking,curling and adhering lianas,accounting for 34.01%,13.62% and 9.42% of overall species,respectively.(4)The photogeographic elements which can be divided into 11area-types of genera and 11area-types of species are complex.They are the major tropical,and some temperate one,indicating the transition area of the tropic to the temperate one.Ecological functional effect of wild woody vine plants in this area is obvious,and has a wide range of end-uses which has important social,economic and medicinal value,comprehensive benefits,huge potential for development and utilization.