基于2SFCA法的杭州体育活力空间可达性评价

MEASURING SPATIAL ACCESSIBILITY TO PHYSICAL ACTIVITY SPACES IN HANGZHOU USING 2SFCA METHOD

通过塑造建成环境来促进活力生活方式已成为改善城市健康的重要举措之一.作为活力生活方式的重要物质载体,公共体育活力空间在物质环境的潜在健康促进方面起着举足轻重的作用.以杭州市为例,本研究利用GIS空间分析手段及高斯两步移动搜索法(Gaussian-Based 2SFCA),对主城区范围内41个街道409个不同等级和类型的公共体育活力空间(PAS)的分布特征及其可达性进行分析.研究结果表明:研究范围内PAS空间分布不均衡,呈现出较强的空间极化特征;PAS密度与人口密度存在一定的正相关关系,但人口密度及PAS用地面积可达性关系表明PAS供给与需求之间存在一定的空间差异性.为增强城市环境中居民的体育活动,健康活力城市规划应优先考虑PAS相对缺乏的区域.

Promoting an active lifestyle by shaping the built environment has become one of the important measures to improve urban health.As an important material carrier of the active lifestyle,physical activity space plays a significant role in the potential health promotion of the physical environment.Taking Hangzhou as an example,this study uses GIS spatial analysis and Gaussian-based 2 SFCA to identify 409 different levels and types of physical activity spaces(PAS)in 41 sub-districts in the main urban area,and analyzes their distribution characteristics and accessibility.The results suggest an intra-urban inequity of PAS distribution,which shows strong spatial polarization characteristics.Although the density of PAS is highly correlated with the density of population,the level of accessibility does reveal significant disparities across space,indicating that there is a certain spatial difference between the supply and requirement.Urban planners should prioritize the deprived areas of PAS to enhance physical activity in urban environment when developing a comprehensive plan for creating a healthy,active city.