中文摘要：

利用ArcGIS软件提取了1962、1974、1982、1991、2000和2008年广州市区公交线网信息,通过建立5×5m的空间网格,采用覆盖率、核函数密度、人口重心及全局空间自相关等指标,对各时期居民基于常规公交出行的可达空间及演变格局进行分析,对出行便捷程度的变化做初步分析。结果表明：基于城市常规公交的居民可达空间经历了旧城集中、外围延伸、网络完善、放射外拓四个演变阶段;常规公交线路逐年增加,公交出行需求不断增大;公交服务的覆盖面积不断增大,但覆盖率有所下降;常规公交出行的空间差异性下降、公平性增强,当前基于通勤出行的便捷度比较低。常规公交、快速公交和轨道交通的接驳组合、优化布局成为公共交通健康发展的关键。

英文摘要：

This paper is to research the evolution of residents reachable spatial based on RBT in Guangzhou city,by using ArcGIS software,extracting RBT routes information in 1962、1974、1982、1991、2000 and 2008,gaining 5m×5m grids and adopting the four indicators of coverage rate,kernel density,population gravity center and global spatial autocorrelation.And then based on the above results to analyze the changes of convenience for residents trips.The results revealed that：①RBT routes and the demand for bus trips are increasing year by year.The coverage area is increasing,but coverage rate overall declining.②The residents’ reachable spatial by RBT evolved four stages：the old city concentration,periphery extension,network perfection and radiation expanding.③The disparities of reachable spatial by RBTtripdeclined,butequity enhanced.Inpresentthe convenience of commuters’ by RBT is low.The lightercombination and optimized distribution of RBT,bus rapid transit and rail transit are the keys to the healthy development of public transport.