Spatial equity analysis of urban green space based on spatial design network analysis (sDNA): A case study of central Jinan, China

Several studies have revealed that urban green spaces (UGSs) provide a number of environmental and social benefits for human beings. However, with the acceleration of urbanization and population growth, the problem of unevenly distributed UGSs presents a challenge for sustainable urban development. This paper classified UGSs based on a spatial design network analysis (sDNA) model and mapped the spatial distribution of the population in central Jinan. Based on this method, an equity evaluation model was established, and the spatial equity of the UGS distribution was analyzed. The results indicated that the core area of central Jinan spread from the center to the east and west along the axis, and the range of the UGS in the core area of central Jinan within a 15-minute walking distance included more than 30 % and nearly 50 % of the population at the local and city-wide scales, respectively. In addition, a correlation analysis showed that the size of the population had a significant negative correlation with UGS accessibility in the study area. The main contribution of this paper was the provision of a new way to assess equity on a more precise scale with the combination of spatial syntax and population data.