中文摘要：

以演变中的南京老城区用地结构和道路系统为主要研究对象,选取明朝、清朝、民国和现代（2008）四个时期节点,基于空间句法并兼顾传统的统计与比较分析方法对南京老城区用地结构的变化与城市系统通达性之间的关系进行系统定量分析和比较研究,并在此基础上研究南京老城区2020年城市规划空间结构的通达性,验证南京老城区城市交通规划的合理性。

英文摘要：

The paper takes evolutive land structure and road system in Nanjing old urban area as the main study object, and chooses four periods - Ming dynasty, Qing dynasty, the Republic of China, modern times （2008）. Quantitive analysis and comparative study is made on the relationship between land use structure change and urban system accessibility based on space syntax combined with the traditional statistical method and comparative analysis, and based on it System accessibility study of Nanjing＇s old urban in 2020 is made,which validate rationality of Nanjing old city.