| With the acceleration of urbanization,the urban population has increased dramatically,resulting in severe traffic congestion in cities and more serious air pollution.The problem of urban road greening has also received increasing attention from academic circles.This paper takes the urban area of Chenzhou City as the research object,and selects 11 evaluation indexes(plant morphology,color and seasonal phase,green viewing rate,hierarchical richness,community stability,species diversity,etc.)in landscape function,ecological efficiency and safety performance.Community locality,road and natural landscape adaptability,flat and vertical surface design,litter and road landscape area division,using the Analytic Hierarchy Process(AHP)to establish a hierarchical indicator system for the greening landscape from the road,the road to the study area The green landscape is comprehensively evaluated.The results are as follows:(1)the community structure of xinzhou road greenbelt is 55% arbor,shrub and grass structure,33.3%arbor and irrigation structure,and 16.7% single arbor structure.In terms of tree species selection,the trees with higher frequency in the road greening of xinzhou city are in order: guohuai,purple leaf plum,pinus tabulaeformis and begonia;The shrubs with higher frequency of use were amur,berberis,boxwood,forsythia.The ground cover plants with higher use frequency are eight bougainvillea,day lily and iris successively.(2)according to the evaluation results,the 24 sample belts were divided into 4 grades.There are 6grade-1 landscape roads,accounting for 25% of the sample,including jiuyuan street,long march road,long march street,jianshe road,longxiang west street and fen yuan street.There are 6 grade-2 landscape roads,accounting for 25% of the sample,including mushan north road,fengqi west street,wooden horse north road,lihua street,kaiyuan street and qiyi road.There are 7 grade-3 landscape roads,accounting for 29.2%of the samples,which are yanmen avenue,xinjian road,tonggang south road,limin east street,yunzhong road,college street and qiyi road(sample belt 2).Five of the four landscape roads,accounting for 20.8% of the sample,are xinglin street,healthy east street,guangming street,park street and tuanjie street.On the basis of road landscape evaluation,combined with the status quo of road greening in GanzhouCity,detailed optimization of various road green space forms of different road sections was made,and reasonable suggestions were put forward. |
