中文摘要：

城市中心区地铁站域多层面步行路径的线密度和面密度关系到站域步行环境是否能满足其人流集散的需求；地铁站点与多层面步行路径及不同层面路径之间的垂直转换、地铁公交与常规公交之间的转换对站域人流高效集散意义重大。本文从密度和转换两个视角量化分析研究上海、香港两地四个案例的多层面步行路径特征，其结论有助于地铁站域多层面步行路径的规划设计思考和决策。

英文摘要：

Linear density and surface density of the multi-level walking paths of subway station in the city center relate with the walking environment. The vertical transfomation between subway stations and multi-level walking paths, between the different levels of the paths, and the transfomation between the subway and the bus have a great significance in the efficient flow distribution of subway station areas. The article makes a quantitative analysis on the characteristics of the multi-level walking paths of the four cases in Shanghai and Hong Kong in two perspectives of density and transfomation, which will help the design and decision-making of the planning of multi-level walking paths of subway station areas.