Study On Plant Selection And Planting Of Urban Road Green Space In Xi’an Based On AHP

The urban road greening is an important component of the urban green space system,and the planting design is the most important of the road greening.How to choose suitable plant,reasonable configuration mode and apply to urban road greening has become a hot spot of landscape architecture research.The purpose of this study is to select the dominant tree species in Xi’an City Road,and to recommend suitable configuration model to guide the design and construction of urban road greening.Based on field research,master of Xi’an city road greening plants;in the AHP hierarchy analysis approach,the selection of road greening tree species in Xi’an City,and put forward the planting design model;case analysis oriented,this selection results in the application of practical engineering.The main conclusions of the study are: first,the status of urban road greening in Xi’an.There are 60 species of trees,24 species of shrubs and 38 species of ground cover plants.Two,the plant evaluation system of Xi’an urban road green space is established,including index system,weight system and evaluation rule.The index system is composed of five categories:Ornamental benefit,growth adaptability,ecological benefit,economic benefit and cultural connotation,and 23 evaluation indexes are set down.The evaluation method pays attention to fuzzy grade evaluation,quantitative evaluation,accurate text description and so on.Three is the dominant tree for the selection of urban road greening in Xi’an.There are 20 species of backbone trees,20 basic trees,8 shrubs,8 basic shrubs,13 backbone areas and 13 base areas.The four is to put forward the planting design pattern of urban road greening in Xi’an.Adhere to the people-oriented,ecological adaptation,coordination principle of Avenue greenbeltplants,central reservation plants,non isolation belt of plant cultivation,roadside greening plant design pattern;residential area,industrial area,commercial area along the road to the recommended plant.The five is to Xi’an city road greening plant evaluation results as the basis,through the study of patterns of Xi’an City Road,North Road,friendship road Taihua three city road greening,further analysis and discussion of how to use the plant engineering practice in the selection results,to carry out road greening plant selection and planting design.