Research On Multi-scale Distribution Differences Of City Parks In Wuhan Main City Zone

As a type of public resources,city parks are an important part of the urban infrastructure for residents to enjoy leisure and entertainment.Urban residents’ demand for the balance of parks distribution is increasing and the balanced layout of urban park is conducive to the construction of urban spatial pattern.The development speed and urban construction speed of Wuhan City are both at a relatively high level.The study of park distribution in Wuhan has a certain representative significance and guiding significance.Based on the accessibility,this paper evaluates the equilibrium problem of urban landscape greening distribution in Wuhan on the urban district scale and street scale by 2SFCA.This paper takes the per capita accessible area as main quantitative measure of accessibility,and the results present higher accuracy with the improved algorithm of calculating per capita accessible area.Other evaluation indicators such as service area ratio and service-level can complement each other and evaluate the overall distribution equilibrium of urban parks in Wuhan.In the research,the GIS is firstly used to calculate the accessibility of various urban district in Wuhan,and then the relevant indicators can be calculated.The mathematical and graphical methods are used to evaluate and analyze the distribution of parks in the district and street scales of downtown Wuhan.Finally,optimization strategies are summarized.The details are as follows:The traditional calculation method mainly focuses on calculating the population of the street.this paper purposed an improving method which assuming the population is evenly distributed in the street,and the proportion coverage ratio is calculated by the coverage area of parks which presents higher accuracy and reliability;The Gini coefficient,location entropy and other methods were used to evaluate the differences in accessibility between urban districts and streets in downtown Wuhan.The analysis shows the favorable equilibrium distribution results of parks on urban scale,but in Qingshan District,Hongshan District and Hanyang District the parkresources have a concentrate tendency.On the street scale,Hongshan District Park shows the worst distribution equilibrium and Jianghan District has the best equilibrium.The parks in each district have a certain concentration trend except Jianghan District.On the street scale,Hongshan District Park shows the worst distribution equilibrium and Jianghan District has the best equilibrium.The parks in each district have a certain concentration trend except Jianghan District.