【摘 要】
：
从空间可达性角度研究其应急避难场所布局的合理性具有非常重要的战略意义和现实意义.本文采用基于GIS的两步移动搜寻法,以北京市海淀、丰台、石景山3个西部城区的59个街道为
【机 构】
：
首都师范大学 三维信息获取与应用教育部重点实验室,北京,100048
论文部分内容阅读
从空间可达性角度研究其应急避难场所布局的合理性具有非常重要的战略意义和现实意义.本文采用基于GIS的两步移动搜寻法,以北京市海淀、丰台、石景山3个西部城区的59个街道为研究单元区,分析不同服务距离(阈值)下可达性的变化,并对现有避难场所的服务功能做出评价.结果表明:①海淀、丰台、石景山三城区均处于较低的应急避难服务水平.②3个城区应急避难场所空间分布不均,其中海淀区的应急避难场所相对较多,空间分布相对较为均匀.③各街道间拥有的避难资源空间差异明显,海淀街道相对富裕,丰台区宛平城地区以西则严重匮乏.
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