Research On Selection Of City Greenways Which Based On Slow-traveling Corridors Suitable Assessment

Nowadays,the urban pressure from society,environment and economy are gradually increasing and facing with challenges of decreasing in the number of green space and quality,the loss of urban open space has been obviously threatening people’s health.In the past century,greenway as a strategic planning concept has been developed in the worldwide to some extend.However,most of urban greenways are scattered around the block in nowadays,there are few cities with complete greenway system planning like urban transport system,most of the greenway planning methods rely on subjective judgment.On the premise of studying various factors affecting greenway selection,based on the background of multiple functional requirements of greenway to construct the greenway evaluation system combined with slow-traffic system.First,analyze the connotation of greenway system and slow-traffic system.Second,Study actual cases of greenway system combined slow-traffic system.Third,evaluate the patch scale and corridors scale,use multi-objective programming to select the greenway route.This study can provide a new research idea for greenway line selection.The research result is shown as follows:(1)Based on the core of landscape ecology in landscape architecture to construct suitability evaluation system of urban patch scale.Screening urban natural ecological patch and humanitarian social patchs,use analytical network process to evaluate six elements of natural ecological patch and humanitarian social patch.Through patch scale evaluation,we can get the score of natural ecological plaque and humanistic social plaque.(2)With research results of urban road traffic planning in urban and rural planning to construct suitability evaluation system of urban corridor scale.Through surveying urban slow-traffic road,summing up urban slow-traffic flow,predicting urban residents travel rate to screen out potential greenways by ArcGIS network analyst.(3)On the basis of landscape connectivity theory to select the greenway routes by multi-objective programming.The target of the research includes maximize of natural ecological value and maximize of humanitarian social value.Under the constraint condition,the connected value of greenway is calculated by mathematical model.Multi-objective prgramming method can give several greenway construction options,these options can be compared by decision makers to arrive at a final solution.(4)Taking greenway system planning of Luzhou central area as research area to verify this evaluation system.First,input land use status,current population size and distribution,existing urban slow-traffic profile,human ecological base in Luzhou city.Second,extract the patch evaluation factors and corridor evaluation factors.Third,use the above greenway selection strategy,we can get the suitable greenway system in Luzhou central city.(5)This thesis summarizes the contributions and shortcomings of the strategic framework and application feedback,and gives Suggestions and prospects for the future development direction of the decision-making method of urban greenway system planning.