The Species Composition and Ecological Characteristics of Vascular Plants in Urban Lake Wetlands in Wuhan

The species composition and the ecological adaptation of vascular plants in Wuhan lake wetlands were analyzed based on field investigations of the species and communities of typical lake wetlands in central urban and suburb.The results showed that,plant resources in urban lake wetlands in Wuhan were very abundant and included 361 vascular plant species,which belonged to 82 families and 231 genera,in which the main category was angiosperm.The geographical composition of the vascular plants was complex and widely associated with other florae,and showed both transitional and anciently originated characteristics,but the endemic species were very rare.The pteridophytes in urban lake wetlands in Wuhan showed obviously intrazonality.The seed plant among the 14 areal-types had a large proportion of the cosmopolitan,pantropic and north-temperate distribution types,which implied obvious subtropical flora characteristics.Meanwhile,the dominant life-form of wetland plants was perennial herbaceous and annual herbaceous which accounted for 37.4% and 32.7% of total lake wetland species,respectively.The mesophyte,with 164 species which accounted for 45.4% of the total wetland plant species,was the dominant type among the all types of the water-based ecological adaptation,which indicated that the vascular plant community had a succession to the stage of mesophyte community in Wuhan lake wetlands.