Flora and community composition of uninhabited islands in Xiangshan
Islands have rich biodiversity due to their unique geographical and ecological characteristics.In order to provide basic data and scientific basis for the conservation of plant diversity on the uninhabited islands in east China's Xiangshan County,Zhejiang Province,a combination of quadrat and transect methods was employed to investigate the vascular plants on 30 uninhabited islands in Xiangshan,and statistically analyzed the flora,community composition and plant diversity of the islands.The results show that:(1)A total of 304 species,belonging to 220 genera and 95 families of vascular plants were identified.(2)The floristic composition of the islands is complex,with its distributions covering from all 15 floristic regions,where tropical elements account for 44.26%and temperate and subtropical elements make up 55.74%.(3)The vegetation types of the islands are dominated by shrubs and grasslands,with a total of 27 communities distributed in 30 islands.The dominant species in the tree layer include Pinus massoniana,Quercus glauca,and Dalbergia hupeana,while those in the shrub and herb layers vary according to their specific environments.(4)There is a significant positive correlation between species richness and island area(P<0.001),but the degree of variation in response to area differs among plants of different growth forms,with the smallest variation being in herbs and the largest in trees.
万方数据
维普
