Research On The Evaluation Of Park Green Space Spatial Distribution From The Perspective Of Fairness And Justice

As an important public resource in the city,the park’s green space is highly valued by its urban distribution,service level,and other disciplines,such as urban and rural planning,urban geography,and sociology.Since the 19th CPC National Congress,China’s major social contradictions have changed.Solving the problem of imbalanced and inadequate social development has become the focus of society,ensuring that urban residents enjoy the fairness of the space of park green space resources,and the next stage of socialist construction The goals coincide.However,for a long time,China’s park green space has always used traditional indicators such as per capita park green space and per capita park green space to guide its geospatial layout,failing to take into account the actual needs of urban residents,and most of the academic research on the spatial distribution of park green space has mostly Concentrated on the research field of regional equilibrium distribution at the city scale,and less attention has been paid to micro-scale studies such as street space.Therefore,it is necessary to start from the actual needs of urban residents in the street space unit,and match the supply level of park green space with the needs of street population to analyze the rationality of the current park green space layout to provide technology and theory for maximizing park green space service level.reference.This article uses ArcGis technology and a variety of evaluation models(including "analysis-synthesis" analysis;"accessibility-location entropy" evaluation method and "supply-demand" evaluation model),and selects 2010 as the time section to construct " The three-dimensional evaluation system of "regional equality—space fairness—social justice performance" comprehensively evaluates the spatial distribution of parks and green spaces in the central urban area of Changsha,Hunan Province,and uses the buffer analysis method to obtain the 81 street space units in the research area.The effective service areas of parks and green spaces at all levels are analyzed by superimposing and analyzing the effective service areas of parks and green spaces at various levels through natural breakpoint classification and standard differential grade methods to obtain the spatial distribution pattern of regional equality.The urban service park green space and the community service park green space are classified and analyzed by using the "accessibility-location entropy"evaluation method and the "supply-demand" evaluation model.Geographically matched population numbers and specific socially disadvantaged groups,including Age groups,children’s groups and low-income people.A multi-layered and comprehensive analysis of the current situation of spatial fairness distribution pattern of parkland green space service levels in 81 street space units in the central urban area of Changsha.The research results show that the status of the overall construction of park green space in the downtown area of Changsha at the end of 2010 is as follows:(1)the construction level of district park green space and residential park green space is low;(2)the geographical space difference between the supply level of park green space and the actual demand of street population is obvious;(3)The level of green space resources enjoyed by the elderly and low-income population is lower than the average level of the average resident population,and it has not yet reached the social justice floor standard,while the level of park green space resources enjoyed by children and young people meets the social justice floor requirements.Matching the spatial distribution pattern of park green space with street space units found that:(1)The effective service level of park green space in the downtown area of Changsha is generally high in the center and low in the surroundings,and circled around Dingwangtai Street and Wenyi Road Street.Distribution pattern of decreasing layers.(2)The level of urban service park green space in the fringe area of Changsha’s downtown area is relatively high,showing a spatial distribution pattern of high north and low south,low east and west high;and community service park green space,contrary to this,showing high central area and low surrounding area(3)The current status of the spatial distribution of parkland green space services in certain socially disadvantaged groups is basically the same as the status of the spatial distribution of parkland green space services in resident population parks.However,the community park green space has a small area and a low level of service.The service level presents a spatial pattern of low and high surroundings in the central area,and there is a spatial mismatch with the actual needs of the elderly and low-income population.Finally,based on the analysis results,a corresponding optimization strategy is proposed for the fairness distribution of the park green space in the downtown area of Changsha:(1)In terms of geographical equality,promote the construction of district park green space and residential district park green space,and distribute the city park green space in a balanced manner;(2)In terms of spatial fairness,considering the actual construction situation of the central urban area,we will expand the size of the existing district-level park green space,multi-site layout of community service park green spaces,and comprehensively improve the spatial fairness of the central urban areas and key development regional park green spaces;(3)In terms of social justice,increase the construction of park green space in the street space unit where the elderly and low-income people gather,and set up differentiated park service facilities based on the population distribution map to meet the actual service needs of different vulnerable groups.