基于服务半径的城市公园绿地空间可达性研究

Spatial Accessibility of Urban Park Green Space Based on Service Radius

基于社区点尺度,运用改进的高斯两步移动搜寻法对南京市建邺区公园绿地可达性进行评价。具体改进为对不同类别的公园绿地分级设置搜寻半径,并以公园出入口代替公园绿地斑块中心点作为搜寻中心。结果表明改进后的方法更能体现各类公园绿地实际服务情况和居民实际出行情况,在可达值的计算上更合理、更准确。

According to some shortcomings of Gaussian based two-step floating catchment area method in the spatial accessibility evaluation of park green space, taking Jianye District of Nanjing City for example, based on the community point scale, we used an optimized Gaussian based two-step floating catchment area method to evaluate the spatial accessibility of park green space. The specific improvements were to setting up service radius for different types of park green space, and taking park entrance and exit instead of green patch center as catch center. The result shows that the optimized method can better reflect the actual service situation of all kinds of park green space and the actual travel situation of residents, and the accessibility is more reasonable and accurate.