周爱华,张景秋,杜姗姗,何丹,付晓

• 1:中国地质大学(北京)土地科学技术学院
• 2:北京联合大学应用文理学院

摘要(Abstract)：

针对传统两步移动搜寻法应用于避难场所可达性研究中存在的中心供给、统一阈值及无距离衰减的问题,提出了"入口供给、分段阈值、高斯距离衰减"的优化方案。入口供给更符合人类的认知规律,分段阈值则充分考虑了避难场所的面积因素,高斯距离衰减符合可达性随距离递减的规律。改良两步移动搜寻法能够较好地揭示城市应急避难场所与人口相互作用的规律。基于ArcGIS平台,将改良两步移动搜寻法应用于北京城区应急避难场所的可达性研究,获得更加真实、可靠的评价结果,展现了改良两步移动搜寻法在公共服务空间可达性评价方面的重要作用。

关键词(KeyWords)： 应急避难场所;可达性;改良两步移动搜寻法;入口供给;分段阈值;高斯距离衰减

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41401199,41271185)

作者(Author): 周爱华,张景秋,杜姗姗,何丹,付晓

DOI: 10.16251/j.cnki.1009-2307.2017.01.017

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