Researches On Accessibility Of City Parks In Yuchengqu Based On GIS Network Analysis

City Park is an important part of the urban public service system.It is an important place for recreation and recreation of urban residents.It has many functions such as ecology,society and economy.The accessibility of city parks are important indicators of the level of urban modernization..Study the accessibility of city parks,Measure the size of the city park services and provide a reference for the development of city parks are of great significances to enhance the service function of city parksBased on Arcgis platform,This paper researched on walking,cycling and motor vehicle accessibility of city parks in Yuchengqu by Network analysis.The results were compared and verified by Buffer analysis:(1)Vertical comparison result: By walking at a reasonable time to reach the city park area is about 5.76%,by cycling the area is about 17.36%,by motor vehicle the area is about 30.71%.In the future this data will change,by walking the area is about16.02%,by cycling the area is about 45.09% by motor vehicle the area is about 51.48%.(2)Lateral comparison result: By walking the level 1 accessibility has increased about 2.92%;Level 2 accessibility has increased about 7.35%;Level 3 accessibility has increased about 8.97%;Level 4 accessibility has increased about 9.27%.By cycling thelevel 1 accessibility has increased about 15.09%;Level 2 accessibility has increased about 12.64%;Level 3 accessibility has reduced about 5.81%;Level 4 accessibility has reduced about 4.07%.Bymotor vehicle the level 1 accessibility has increased about 26.04%;Level 2 accessibility has reduced about 5.28%;Level 3accessibility has reduced about 4.64%.(3)Residential area analysis conclusion: By walking,reasonable time can reach the residential area from 15.05% to 49.50%;Bycyclingreasonable time can reach the residential area from 60.33% to 92.30%;By motor vehicle reasonable time can reach the residential area from75.78% to99.75%.(4)Optimization and demonstrates:Through the optimal layout of the city park,by walking the reasonable time can reach residential.area from 49.50% to 57.52%.Space layout is more reasonable.The scope of services is more fair.