西宁市居民工作日和休息日时空活动差异研究

以手机信令数据为数据源,研究西宁市居民在工作日和休息日的时空活动差异及POI设施空间分布对居民活动差异的影响。结果表明:1)西宁市为单中心空间结构,居民在工作日集中分布在市中心区域,而在休息日的分布较分散;2)在休息日,商业和交通设施对居民活动产生积极影响,居住用地在早上对居民活动产生较强的积极影响(下午影响强度减弱),工业用地和公共用地在大部分时段对居民活动强度产生消极影响;3)在工作日,商业设施对居民活动的影响明显减弱,居住用地仅在晚上和凌晨对居民活动产生积极影响,而白天大部分时段出现消极影响,工业用地和公共用地在白天大部分时段会促进居民停留。研究结果有助于明确工作日和休息日居民在城市空间的时空活动差异及影响机制,可为城市出行空间和基础设施规划提供参考。

Study on Spatio-temporal Differences of Urban Residents' Activities between Weekdays and Weekends in Xining City

Taking the mobile signaling data as the data source,we investigate the spatio-temporal difference of urban residents′activities between weekdays and weekends in Xining City,as well as quantify the effect of spatial distribution of POI(point of interest)facilities on residents′activity.The study results could be summarized as follows.1)Xining is a city with single center spatial structure.Residents are concentrated in the downtown areas on weekdays,but more dispersed on weekends.2)On weekends,commercial and transportation facilities have a positive impact on residents′activities;similarly,there is a strong positive correlation between residential land and activities in the morning,but the intensity would decrease in the afternoon.In addition,industrial and public land have a negative effect on residents′activity intensity in most periods of weekends.3)On weekdays,the influence of commercial facilities on residents′activities is obviously compromised;residential land only has a positive impact on residents′activities in the early morning and evening,while it basically has a passive impact during daytime;and industrial and public land virtually encourage residents to carry out activities in the daytime.These results are beneficial to grasp the spatio-temporal differences of residents′activities on weekdays and weekends and their influencing mechanisms,which provide a reference for the planning of urban travel space and infrastructure.