基于多源数据的成都市居民出行热点时空特征分析

Temporal and Spatial Characteristics of Traveling Hotspots of Chengdu Residents Based on Multi-source Data

以成都市主城区为例,利用出租车GPS轨迹生成上下车热点,结合POI数据识别城市功能区,从不同时段、周末与节假日等多角度比较居民出行的时空特征.研究发现:研究区中商务办公区与休闲旅游区多分布在研究区外围,其他类型功能区分布较为均匀;周末和工作日各时段上车热点会随着时间的推移由集中变得分散,下车热点会先集聚再扩散;工作日在商务办公区形成的热点较周末多,其他类别用地在周末和工作日形成的热点区域差别不大;武侯区和金牛区出行量多,但热点零星不集中;青羊区热点区域较为连续,且集中分布于城市中心区域.

Taking the downtown of Chengdu as an example,the taxi GPS track is used to generate hotspots for getting on and off,combined with POI data to identify the urban functional area,and the time and space characteristics of residents’travel are compared from different angles,weekends and holidays.The study finds that the business office area and leisure tourism area in the study area are mostly distributed in the periphery of the study area,and other types of functional areas are more evenly distributed;and that on the weekends and working days,the hotspots of on the taxi become dispersed from time to time.Car hotspots first gather and then spread;the hotspots formed in the business office area during the working day are more than at the weekends.The other types of land use have little difference in the hotspots formed at the weekends and during the working days;Wuhou District and Jinniu District have more travels,but the hotspots are sporadic and not concentrated.The hotspots in Qingyang District are relatively continuous and concentrated in the central area of the city.