Research On The Evaluation Of Chengdu Greenway Suitability Based On Analytic Hierarchy Process

Urban green space is the main outdoor activity space for the elderly in their daily activities.The green space with beautiful environment provides comfortable activity space and various activities for the elderly,such as leisure,recreation,fitness and communication.It largely meets the needs of the elderly.This paper chooses Jinsha Greenway and Binjiang Greenway to evaluate the aging of urban greenway by analytic hierarchy process.The main conclusions are as follows:(1)According to the physical condition and use needs of the elderly,the hierarchical structure model of Chengdu Greenway Aging Assessment System was established.The model consists of 4 levels and 35 evaluation factors.Among them,in the weight distribution of factors,space security occupies the largest weight,followed by environmental comfort-related factors,ranked fourth is site familiarity,site familiarity is an important factor affecting psychological safety,the psychological state of the elderly is very similar to that of children,afraid of loss,in a more familiar environment will feel safe,therefore,in the outdoor greenway space landscape Camp During construction,attention should be paid to creating a sense of place through landscape elements to increase the psychological safety of the elderly.Environmental hygiene determines users' first impression of the greenway.For the elderly,they prefer to stay in the environment with good sanitary conditions.The small proportion of the weight value of cultural indicators reflects the public's low attention to cultural connotation.It is precisely because of the serious homogenization of the current landscape,the regional culture has been absorbed bythe popular and fast-food culture,gradually losing its characteristics,so that the public's perception of culture has become indifferent.Therefore,it is hoped that the planning and design of Greenway landscape with the function of regional leapfrogging and linking can effectively integrate the regional characteristic culture into it.(2)Based on the evaluation system,Jinsha Greenway and Binjiang Greenway in Chengdu were evaluated respectively.The results showed that the final aging score of Jinsha Greenway was 3.7341 and that of Binjiang Greenway was 3.3397.The two greenways are "general" and there is still room for improvement.Among them,Jinsha Greenway is better in safety,scientific facilities and humanization.In terms of plant coverage,space form and comfort,Binjiang Greenway is better in terms of convenience,space comfort and site familiarity.It is poor in safety,dynamic and static zoning,space form and scientific facilities and equipment.According to the analysis of the above greenways and the current situation of Chengdu greenways,the author puts forward four strategies to improve the aging of Chengdu urban greenways.That is,to ensure the safety of greenway,to increase the form and quantity of humanized facilities,to increase the richness of Greenway space,and to pay attention to the comfort of infrastructure.