Study On The Endangered Living Situations Of Key Protected Wild Plants In Shanxi Province

Based on the data of the second national survey of key protected wild plant resources of Shanxi Forestry Department and Shanxi Forestry Planning Survey Institute,the quantitative classification index of protection classification index of protection by using the endangered coefficient,genetic value coefficient,species value coefficient and protection status coefficient,and uses the hierarchical analysis method(AHP)to study hierarchical analysis.The main results are as follows:(1)There are only 13 woody plants below 100,accounting for 24.07%of the total surveyed;There are only 6 species of vines or herbs under 200strains,accounting for 11.11%of the total surveyed;There are 16 kinds of plants in the community area below 10hm~2,accounting for 29.63%of the total surveyed;There are 37 species whose group structure belongs to the group is too small,accounting for 68.52%of the total survey;The comprehensive interference intensity of the four protected plants was strong,accounting for 7.41%of the total number of species investigated.(2)According to the magnitude of the endangered factor,the key protected wild plants in Shanxi Province were classified into seven grades,including only one species of the extinct species,five species of extremely dangerous species,four species of endangered species,17 species of easily endangered species,10 species of near dangerous species,18 species without dangerous species,and 6 species without evaluation.Among them,extremely dangerous species,endangered species,vulnerable species collectively known as threatened species,a total of 26 species.(3)Four levels of protection are classified according to the size and classification of priority protection values.There are 13 species of key protected wild plants of Class I:Acer zhongtiaoense,Callianthemum cuneilobum,Taihangia rupestris,etc.There are 20 species of key protected wild plants of Class II:Ceratostigma plumbaginoides,Kolkwitzia amabilis,Callicarpa japonica et al.;There are 10 species of key protected wild plants of Class?:such as Elaeagnus mollis,Ulmus lamellosa,Staphylea bumalda and other 10 species;There are 11species of key protected wild plants of Class IV:such as Ephedra equisetina,Xanthoceras sorbifolia and Litsea pungens.