Hunan Dongan Zishui National Weltland Park Biodiversity Elaluation

Dongan Zishui national wetland park is located in the central part of Dongan Country in the southwest of Hunan province. It is very rich in species and has high economic value and various ecological functions. In order to more reasonable biological diversity protection, this paper had a investigation on large number of animals and plants of Dongan Zishui wetland national park, had a research in animal and plant biodiversity and value, in biodiversity conservation measure. The results were as follows:(1) Biodiversity survey of the national wetland park of Zishui in Dongan:there are 4 types and 2 classes, has rich ecosystem types. There are four vegetation type groups,10 vegetation types and 36 formations. There are 195 families、676 genera and 1100 species of wild vascular plants; which has 31 families、56 genera and 92 species of ferns, and 7 families、13 genera and 16 species of gymnosperm, and 157 families、6076 genera and 992 species of angiosperm. There are 192 species of wild vertebrates, belong to 28 orders and 74 families. National key protected plants are Primulina tabacum Hance, Cycas revoluta Thunb, Metasequoia glyptostroboides Hu et Cheng, Taxus mairei SY Hu. There are 8 species of national second grade protected plants, respectively, Cinnamomum camphora, Zoysia sinica Hance, Glycine soja Sieb. Et Zucc, Zenia insignis Chun, Fagopyrum dibotrys (D.Don) Hara, Eurycorymbus cavaleriei (Levl.) Rehd. Et Hand.-M azz, Zelkova serrata (Thunb.) Makino, Ginkgo biloba L, Liriodendron chinensis (Hem sl.) Sarg.(2) An investigation of the animals in the National wetland Park of Zishui in Dongan, There are 192 kinds of wild vertebrates, it belong to 28 species and 74 families, There are 11 species of 4 families and 39 species of fishes,14 species of amphibians and 5 species of 2 families, there are 7 species of 3 families and 22 species of reptiles,36 species of 13 families and 97 species of birds,15 species of mammals and 20 species of 6 families and species of mammals, The total number of species for Hunan province known vertebrate 20.96%. Fish species which accounted for 19.02% of known fish species in Hunan Province, amphibian species accounted for 20.29% of known amphibian in Hunan Province; reptile species accounted for 22.22% of known reptiles in Hunan Province; mammalian species accounted for 21.05% of known mammal in the Hunan Province.(3) 6 evaluation indexes were determined which contains Wild vascular plant richness、Wild animal species richness、Diversity of ecosystem types、Species rarity and Dimensions of invasive species and threatened species richness. It was concluded that the evaluation results of BI=35.18 means the biodiversity index are medium. Biological diversity evaluation results show that:Dongan Zishui wetland national park is rich in animal and plant species. the number of endemic species in China is alot But the invasion of alien species is threatened, the number of threatened species is relatively more. Calculation the biological diversity value:Using conditional analysis method (CVM) concluded that the biodiversity value of Dongan Zishui wetland national park is $ 421.65 billion.