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提出一种基于增强型两步移动搜索法算法的城市核酸采样点空间可达性评估模型,模型将研究区格网化为人口需求点,使用高德API的步行规划接口估算人口格网单元到达核酸采样点的时间成本,对研究区核酸采样点的空间可达性进行评估。以武汉市长江以北的中心城区为实验区,结果表明,研究区边缘地带的空间可达性最低,汉阳区中心、硚口区西北部、江岸区北部以及东北地点的空间可达性最高,核酸采样点的空间可达性受人口密度、最短步行时间以及采样点服务时长的共同影响,并据此提出了提高研究区核酸采样点空间可达性的建议。
Abstract：In this paper, we proposed a model based on the enhanced two-step floating catchment area(2SFCA) to evaluate the spatial accessibility of urban nucleic acid test sites. Taking the central urban area north of the Yangtze River in Wuhan as the study area, we transformed the grid of study area into population demand points, and estimated the travel time between population and testing sites from an online map API. The results show that the spatial accessibility across the study area is unbalanced, with relatively high spatial accessibility in the center of Hanyang District,the northwest area of Qiaokou District, the north and northeast area of Jiang'an District, and relatively low spatial accessibility in the periphery and boundary of study area. Meanwhile, the spatial accessibility is strongly affected by population density, travel time and service time of nucleic acid test sites. Then, we put forward some suggestions to improve the overall spatial access of nucleic acid test sites.
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基本信息:
中图分类号:P208;TU984.14
引用信息:
[1]季霞,李涛,密长林,等.城市免费核酸检测采样点空间可达性研究[J].地理空间信息,2022,20(12):47-52.
基金信息:
国家自然科学基金资助项目(42071217)
2022-12-27
2022-12-27