Research On The Suitability Of Landscaping Tree Species And Application Potential Of Local Woody Plants In Taiyuan Area Based On Floristic Analysis

With the development of city and the construction of garden city,biodiversity conservation has been paid more attention.On the basis of "Taiyuan flora",this study conducted a survey of the green plants in Taiyuan City,conducted a survey on the plants in each district of the city,investigated the species of plants in other key areas in the city,thoroughly grasped the plant species in the area of Taiyuan,and analyzed the characteristics of the flora in detail on the basis of statistics,and applied to the garden.All 517 species of woody plants in the Taiyuan city were evaluated,and the excellent ornamental and ecological trees and wild woody plants with great potential for greening were selected,which provided suggestions for the application of landscaping tree species.The investigation and statistics of the domain of seed plants in Taiyuan City,get the following conclusions:(1)the number of rich families,the dominant.There are 117 families,608 genera and 1641 species of seed plants in Taiyuan.Major families include Compositae,Rosaceae,Gramineae,Ranunculaceae,Leguminosae,Liliaceae,and willow family.Many of these species are often dominant or built in the community.(2)the flora is rich in temperate distribution,with obvious transitional characteristics.(3)the origin of the flora is more ancient.There are many primitive groups and isolated groups.The coefficient of differentiation is 2.69,and the single type belongs to 13 genera.(4)the degree of endemism is low.There are 17 Chinese endemic genera in Taiyuan,16 Chinese endemic species and 31 Shanxi endemic species.(5)there are many rare and endangered plants.There are 21 national rare and endangered plants in Taiyuan,and 38 species are rare and endangered plants in Shanxi.The application of greening woody plants in Taiyuan city was evaluated.From three levels of ecology,adaptability,ornamental and cultivation characteristics,25 evaluation indexes were used to evaluate the application of 236 kinds of urban greening woody plants(including 117 kinds of native greening woody plants),and 12 species of I grade trees were selected,among which 9 were native and 30 species of II trees,among which there were 16 species of native soil;? There are 76 species of tree species,including 38 indigenous species,32? class trees,and 10 native ones.There are 3 I shrubs and 15 shrubs,of which there are 7 species of native soil;24 species of III shrubs,among which there are 8 species of native soil;there are 36 species of IV shrubs,among which there are 17 species in local soil;1 in I grade vines;1 of II grade vines,and 3 in IV grade;among which there are 1 species in IV class 3.Evaluation of the suitability of native native plant gardens in Taiyuan,3 species of I trees,3 species of grade ? trees,25 species of ? grade trees,72 IV grade trees,4 ? shrubs,18 ? shrubs,70 ? shrubs,70 grade ? shrubs,3 ? rattan,2 species of III grade vines and 4 species in IV grade vines.