Resource and protection of the national key preserved wild plants in Zhangheyuan Nature Preserve

Zhangheyuan Nature Preserve is located in the southwest of Nanzhang county, Hubei province. Based on the field investigation and known data, the distribution of national key preserved wild plants in this area was studied. The results showed that there were 21 species of national key preserved wild plants,among which 3 species belonged to the first class(including Ginkgo biloba,Taxus chinensis and Taxus chinensis var. mairei)and 18 species belonged to the second class(Cephalotaxus oliveri,Picea neoveitchii,Fagopyrum dibotrys,Cercidiphyllum japonicum,Glycine soja,Ormosia hosiei,Liriodendron chinense,Magnolia officinalis,Magnolia officinalis ssp.biloba,Emmenopterys henryi,Zelkova schneideriana,Canvptotheca acuminate,Cinnamomum camphora,Phoebe bournei,Phoebe zhennan,Toona ciliate,Torreya fargesii and Phellodendron chinense). Each accounts for 45.65%, 37.50% and 47.37% of the species distribution in Hubei province, respectively. The characteristics of the national protected plants in Zhangheyuan Nature Preserve were concentrative distribution, small population, severe fragmentization and distinct elevation distribution. Some effective conversation suggestions also had been put forward in this study.