Vegetation and Conservation Strategy of Dajiuhu Wetland Park in Shennongjia Region

411 vascular plant species,belonging to 273 genera 103 families,were recorded in Dajiuhu Wetland Park.They account for 51.8%,31.3% and 14.9% of the total amount of families,genera and species in Shennongjia Nature Reserve,respectively.In the floristic composition,the component of Temperate Zone is dominant.The vegetation can be classified into 4 vegetation type groups,7 vegetation types and 20 formations.Sparganium stoloniferum community and Menyanthes trifoliata community are first recorded in China.Two insectivores(Utricularia aurea and Drosera rotundifolia) in marsh and Ranunculus natans in Carex argyi community are first recorded in Shennongjia region,and D.rotundifolia and R.natans are also first recorded in Hubei Province.Based on the present investigation and the main problems in the Wetland Park,we gave some conservation suggestions.