Study on the Spatial Distribution Pattern and Potential Distribution Area of National Key Protected Wild Plants in Shennongjia Forest Area
In this study,according to the Ministry of Ecology and Environment's Technical Regulations for Investigation and Evaluation of Terrestrial Higher Plant Diversity in County Areas,the whole Shennongjia Forest Area was divided into 37 working grids(10 km×10 km),and the spatial distribution pattern,protection status and potential distribution area of national key protected wild plants in the forest area were analyzed.The study found that:(1)There are 84 species(including varieties)of national key protected plants in Shennongjia Forest Area,including 7 species(including varieties)of national first-level key protected plants and 77 species(including varieties)of national second-level key protected plants.There are 79 species(including varieties)which have detailed distribution information.Among them,at the family level,Orchidaceae have the most species.At the genus level,Paris has the most species,and the life form of plants is mostly herbaceous.(2)In the analysis of horizontal distribution pattern,the number of national key protected plant species in grid 31(Guanmen Mountain,Xiangxiyuan)is the largest,which may be related to its location in the middle and high mountain areas with large fluctuations and in the Daba Mountains.(3)In the analysis of vertical distribution pattern,Middle-altitude forest belt(1200 m≤alt≤2300 m)had the highest species richness,with a total of 67 species(including varieties)of national key protected plants,belonging to 45 genera in 29 families.(4)Screening out the hot spot area for 31 and 32 grids,both in Shennongjia National Park,indicating that the hot spot area is basically fully protected,and there is no protection vacancy in the hot spot area.There are 54 species(including varieties)of national key protected wild plants in Shennongjia National Park,with an in-situ protection rate of 64.29％.(5)Seven kinds of typical national key protected wild plants were screened out,and their current potential distribution areas were predicted.The potential distribution areas were mainly in the three areas of Hongping Town,Muyu Town and Dajiuhu Lake.Xinhua Town and Yangri Town also have some potential distribution areas,while there are basically no suitable areas in the northeast part of Shennongjia Forest Area.Among the seven national key protected wild plants,Taxus chinensis has the largest potential distribution area in Shennongjia Forest Area,accounting for 87.02％of the total area of Shennongjia Forest Area,and the area of high suitable area is 1562.50 km2.
Shennongjia Forest Areanational key protected wild plantsspatial distribution patternpotential distribution area
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