Abstract:
With the development and application of LAD and LBS, the digital footprint of the
user has provided convenience for effectively displaying the trajectory of urban population flow
and the spatio-temporal aggregation, which makes up for the shortcomings of traditional urban
research and spatial planning. With the help of Baidu heat map and ArcGIS, this paper analyzes
the temporal-spatial footprint of population flow of the central city of Wuhan City. The results
showed that: the population agglomeration showed obvious fluctuation, but the fluctuation of
working days was stronger than that of the rest days, and the activity track was highly consistent
with the commuting rhythm, while the rest day was more stable. There is a phase difference
between working days and rest days; the time of population flow and accumulation is earlier
than the rest; the afternoon, the day of rest, the time of population flow and focus lag behind
the working days. Whether on weekdays or on the day off, the concentration of the morning is
low, and the concentration of people in the afternoon and evening is higher, and is much higher
than that in the morning. In the spatial footprint, the working day and the rest day are gathering
together the spatial position approximately same, the working day mainly is the commercial
center, the transportation hub and the employment center, displays the very obvious work
direction. Days off point to traditional shopping centre, large transportation hubs and emerging
urban complexes.