Research On Accessibility Of Harbin Comprehensive Park Based On Network Analysis Method

As an important part of urban green space system,city park is an important place for urban residents to have outdoor activities.As a well-functioning green space in the park,the urban comprehensive park plays a positive role in enhancing the communication between urban residents and relieving the pressure caused by the fast pace of urban life.The traditional evaluation of urban green space is only based on the urban green space rate,per capita park green space and other indicators to measure whether the park is up to standard,but this approach ignores the travel costs and expenses of urban residents to the park,and cannot directly reflect the convenience of residents to the park green space and the rationality of park distribution.By consulting a large number of domestic and foreign literature,this paper summarizes and sorts out the relevant theoretical knowledge and development process of the accessibility of urban parks,selects the accessibility of comprehensive parks as the research entry point,and selects the network analysis method as the main research method for the accessibility analysis of green space in Harbin comprehensive parks.Secondly,through the actual site investigation and visit to Harbin city comprehensive park,the current layout of green space in Harbin city comprehensive park is analyzed qualitatively.By collecting park distribution,land for residential areas,road grade,the sorting of the relevant data such as the car speed,GIS Arc Catalog to create personal database,and use of the network analysis function of GIS platform Arc map of Harbin city comprehensive park layout and accessibility of different traffic modes analysis and study on the different transportation modes of urban comprehensive park accessibility.According to the analysis results,the areas with good accessibility of Harbin comprehensive park are concentrated in the old city on the south side of the songhua river,and the accessibility range is relatively uniform within a certain time interval.The areas with poor accessibility are mainly concentrated in the urban fringe.The spatial imbalance between the number of comprehensive parks and the supply and demand of service objects leads to the main service blind areas at the north and south ends of the city and the secondary service blind areas at the east and west sides.Although the construction of expressway and other advanced roads has improved the accessibility of motor vehicles,it has seriously affected the accessibility of non-motor vehicles.In view of the existing problems of Harbin comprehensive park,such as the small number and uneven distribution of urban comprehensive park,the single road level and facility land near the park,this paper puts forward improvement and optimization suggestions from three aspects:building the overall pattern of comprehensive park,future park location suggestions and improving the road network system.