地理科学进展

地理科学进展 ›› 2016, Vol. 35 ›› Issue (5): 589-599.doi: 10.18306/dlkxjz.2016.05.006

• 研究综述 • 上一篇    下一篇

两步移动搜寻法及其扩展形式研究进展

陶卓霖1,2(), 程杨3,**()   

  1. 1. 北京大学城市与环境学院,北京 100871
    2. 北京大学城市规划与设计学院,广东 深圳 518055
    3. 北京师范大学地理学与遥感科学学院,北京 100875
  • 接受日期:2016-02-01 出版日期:2016-05-27 发布日期:2016-05-27
  • 通讯作者: 程杨
  • 作者简介:

    作者简介：陶卓霖(1990-),男,江西万载人,博士研究生,研究方向为城市与区域规划,E-mail: taozhuolin@pku.edu.cn。

  • 基金资助:
    国家自然科学基金项目(41301164);National Natural Science Foundation of China, No.41301164

Research progress of the two-step floating catchment area method and extensions

Zhuolin TAO1,2(), Yang CHENG3,*   

  1. 1. College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
    2. School of Urban Planning and Design, Peking University, Shenzhen 518055, Guangdong, China
    3. School of Geography, Beijing Normal University, Beijing 100875, China
  • Accepted:2016-02-01 Online:2016-05-27 Published:2016-05-27
  • Contact: Yang CHENG

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摘要：

两步移动搜寻法是公共服务设施空间可达性研究中的重要方法,在国内外公共服务设施布局研究中得到了广泛应用,且发展出了众多扩展形式。但国内研究中对两步移动搜寻法尤其是其扩展形式的应用还较为有限。本文对两步移动搜寻法的主要扩展形式进行系统梳理和总结,将国内外研究中提出的两步移动搜寻法扩展形式归纳为基于引入距离衰减函数的扩展、对搜寻半径的扩展、针对需求或供给竞争的扩展以及基于出行方式的扩展4类,并分析了各种扩展形式的优缺点、适用情景以及未来可能改进方向。旨在为相关研究的方法选择提供参考,促进两步移动搜寻法及其扩展形式在国内相关领域的应用和发展。

关键词: 两步移动搜寻法, 扩展形式, 距离衰减函数, 搜寻半径, 三步移动搜寻法, 研究进展

Abstract:

Two-step floating catchment area (2SFCA) method is an important method of research on spatial accessibility to public services, which has been widely applied in studies on the spatial layout of public service facilities. Various extensions of 2SFCA have been developed. However, the application of the 2SFCA method and especially its extensions is still very limited in China. Thus, this study systematically summarizes the major extensions of the 2SFCA method. Such extensions found in existing literature can be classified into four categories. The first category focuses on the distance-decay function, replacing the dichotomous distance-decay form of the original 2SFCA by a multilevel discrete form as in the Enhanced 2SFCA, or continuous forms such as in the gravity-style, Gaussian-style, and Kernel-density-style distance-decay functions. The second category deals with the delimitation of catchment areas. The original 2SFCA form adopts a buffer-ring (BR) method delineating the catchment areas as concentric circles with certain radii of physical distance or travel time. A number of extensions have improved the BR method, including the Variable 2SFCA, the Dynamic 2SFCA, and the Multi Catchment Sizes 2SFCA. Moreover, a novel nearest-neighbor (NN) method for delineating the catchment areas by identifying a finite number of nearest facilities for each demand node has been proposed. The third category strives to improve the accuracy of 2SFCA by accounting for the competition among demand nodes or among supply nodes. The initial extension of this category is the Three-step Floating Catchment Area (3SFCA) method, following which other extensions such as the Modified 2SFCA and the Huff 2SFCA are proposed to make further improvements. The fourth category extends the travel means of the demand side, including the Multi-mode 2SFCA taking into account various potential transportation modes, and the Commuter-based 2SFCA integrating service visits and commuting behavior. The advantages and disadvantages, scenarios appropriate for their application, and potential improvements in the future of these extensions are also discussed. This study can contribute to the choice of method in relevant studies and promote the implementation and development of the 2SFCA method and extensions in relevant research fields in China.

Key words: two-step floating catchment area method, extension, distance-decay function, catchment area, three-step floating catchment area method, research progress