Resources Science ›› 2021, Vol. 43 ›› Issue (2): 390-402.doi: 10.18402/resci.2021.02.16

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Equity of urban health resources based on walkability and spatial distribution of population: A case study of the central urban area of Guangzhou City

WANG Fang(), ZHU Mingwen, CHEN Chongwang, XIAO Ying, ZHANG Xuxi   

  1. School of Geography and Tourism, Guangdong University of Finance & Economics, Guangzhou 510320, China
  • Received:2020-04-17 Revised:2020-07-31 Online:2021-02-25 Published:2021-04-25

Abstract:

Urban health resources have a positive impact on residents’ physical and mental health. In this study, the central urban area of Guangzhou City was selected as the study area, and the points of interest data, road network data, Sentinel-2A remote sensing image, and demographic data were used for the analysis. Using a walkability index and multiple linear regression model of land-population, the equity of urban health resources is comprehensively explored through correlation analysis and spatial overlay. The results indicate that: (1) The urban health resources in the central urban area of Guangzhou City can be conveniently accessed by walking, but the high and low values of walkability are mixed, forming a multi-center zonal distribution pattern with decreasing walkability when moving away from the centers; (2) The regional differences in spatial distribution of population are large, and the population gradually decreases from the center of Liwan District, the southwest of Yuexiu District, the northwest of Haizhu District, and the south of Tianhe District; (3) The correlation coefficient between the walkability of urban health resources and population is small, with the proportion of the low-high value areas and high-low value areas as high as 40%. There is still a large space for improvement in the equity of urban health resources; (4) The regional supply and demand of urban health resources is unbalanced, among which natural health resources are the scarcest and the distribution is suboptimal. In order to promote the maximization of walkability equity of urban health resources, its allocation should comprehensively consider the regional population demand, resource type and quantity, and accessibility and convenience of walking. This study can provide a scientific reference for optimizing the spatial distribution of regional health resources and improving the balance between supply and demand.

Key words: urban health resources, equity, walkability, population, spatialization, multiple linear regression, Guangzhou City