Quantitative Assessment of Priority for Conservation of the National Protected Plants in Qizimeishan Mountain Nature Preserve

Based on the field investigation and known data,the distribution of the national key protected wild plants in Qizimeishan Mountain Nature Preserve was studied and analyzed in this paper,and the priority conservation of the national key protected wild plants was quantitative analyzed by using the threatened coefficient,the genetic coefficient and the species value coefficient.The results showed that(1) there were 28 species of the national key protected wild plants in Qizimeishan Mountain Nature Preserve,among which 7 species belonged to the first class,21 belonged to the second class,and each accounted for 60.9%,87.5% and 55.3% of the Hubei province's distribution,respectively;(2)28 species of the national key protected wild plants were sequenced by the system of priority conservation and evaluation,and the results were different from《the checklist of national key protected wild plants(the first passel)》:Ginkgo biloba and Bretschneidera sinensis belonged to the first rank preserve,and accounted for 7.14%;Phoebe zhennan,Cercidiphyllum japonicum,Davidia involucrata var.vilmoriniana,Taxus chinensis,Davidia involucrata,Pseudotsuga sinensis,Ormosia henryi,Cephalotaxus oliveri,Toona ciliata var.pubescens,Torreya fargesii,Tetracentron sinense,Ormosia hosiei,Phoebe bournei,Taxus chinensis var.mairei,Brasenia schreberi,Toona ciliata and Phellodendron chinense belonged to the second rank preserve,and accounted for 60.71%;Camptotheca acuminata,Emmenopterys henryi,Liriodendron chinense,Zelkova schneideriana,Magnolia officinalis and Magnolia officinalis ssp.biloba belonged to the third rank preserve,and accounted for 21.43%;Fagopyrum dibotrys,Cinnamomum camphora and Glycine soja belonged to the fourth rank preserve,and accounted for 10.71%;(3) Plant threatened status and priority preservation sequence were more truly reflected by the evaluation and rating results from this evaluation system.Therefore it is very significant for the priority conservation of the national protected plants in this area.