| Road greening not only plays a certain ecological benefit but also has an important beautification function.At the same time,the road greening landscape is the facade of a city,which can reflect the regional characteristics and style of a city.This paper collects data and summarizes the types,quantitative characteristics,structural composition,and composition of road green space plant communities through field research on the road green land plant communities in Jinan City,using research methods such as ecology,botany,and plant community.Related data such as richness and health.The ecological benefits and visual quality of the plant communities in various sections of the tourist roads in Jinan City were comprehensively evaluated,and the typical plant communities of grade I in the evaluation results were analyzed and studied.Finally,it draws conclusions and provides relevant suggestions for the configuration optimization and promotion design of road green space plant communities in Jinan.The research conclusions and results of this paper are as follows.Analysis and statistics of the types of plant communities on tourist roads and green spaces: There are 7 vegetation types,3 evergreen broad-leaved forests,7 evergreen deciduous broad-leaved mixed forests,193 deciduous broad-leaved forests,and 15 coniferous and broad-leaved mixed forests.,9 coniferous forests,2 evergreen broad-leaved shrubs,6deciduous broad-leaved shrubs.There are 92 clusters and 235 clusters.This investigation analyzed the composition and quantitative characteristics of plant communities: a total of 44 families,90 genera and 110 species of plants,mainly angiosperms.The number of genera and genera of trees in the plant community are: 23 families,40 genera,50 species,there are 10 evergreen trees and 40 deciduous plants,and the number of genera and genera of shrubs are: 15 families,28 There are 32 genera,32 genera,12 genera,21 genera,and24 genera.The number of genera and genera of liana are: 3 families,4 genera,and 4 species.There are a maximum of 40 deciduous tree species,accounting for 36.35%,with fewer annual herbs,vines,and bamboos.Among them,the ratio of plant species of trees,shrubs,herbs and vines is 12: 8: 6: 1,the ratio of plant species of evergreen trees and deciduous trees is 1: 4,and the ratio of plant species of evergreen shrubs and deciduous trees is 7: 9.The ratio of evergreen to deciduous tree shrubs is 1: 3.According to the results of the survey,there are 197 mixed forest lands in the horizontal structure of plant communities,accounting for 84% of the total communities.There are 37 pure forest land,accounting for 16% of the total community.Among the vertical structures of plant communities,the “tree + small tree + shrub + herb” structure has the highest frequency,with 117 accounting for 50%,and the “tree + small tree + herb” structure has a higher frequency,with 55 accounting for 15%,"small trees + shrubs + herbs" and "small trees +herbs" have fewer two structures.The community of "shrub + herb" structure appeared the least frequently,and the "single layer" structure did not appear.Among the 235 plant communities surveyed,14 plant communities with less species richness accounted for 6%;169 plant communities with richness average accounted for 72%;plant communities with richness richness accounted for 48% More than 21%;there are three plant communities with a richness of three,accounting for 1%,indicating that the overall species richness of the tourist road plant communities is average.According to the investigation of plant communities,the highest occurrence frequency of locust trees in China is 47.23%,and the tree species with a frequency of more than 20%include ash,privet,elm,and shrubs with a frequency of more than 20%.,Gold and silver wood,forsythia,bauhinia,the herbs with higher frequency are Ophiopogon japonicus,Manila grass and Goosegrass are 47.66%,40.85% and 29.79% respectively.The comprehensive evaluation results are as follows: 6 areas have an evaluation level of I,accounting for 20% of the evaluated plant community;19 areas have an evaluation level of II,accounting for 63% of the evaluated plant community;and 5 areas have an evaluation level of III,Accounting for 17% of the evaluated plant communities.This shows that the average comprehensive benefit level of the plant community on the green roads of tourist roads in Jinan is good,but the number of plant communities with high evaluation in the comprehensive benefit evaluation is not large.Select the representative plant community from the section with evaluation level I as the object of analysis and research.Take a picture of the current status of the plant community and draw a plan,analyze the species composition,configuration mode and structure type of the plant community,and analyze the advantages and disadvantages of the plant community.Finally,the relevant conclusions of the plant community species selection and configurationmode are drawn,and suggestions are provided for the optimization and construction of the plant community of road green space in Jinan in the future. |
