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Research on Population Spatiotemporal Aggregation Characteristics of a Small City: A Case Study on Shehong County Based on Baidu Heat Maps

by Deyi Feng 1,2, Lingli Tu 1 and Zhongwei Sun 1,*
1
Department of Urban Planning, School of Architecture and Urban Planning, Chongqing University, Chongqing 400030, China
2
Institute of Architecture and Planning, Guiyang Urban Planning and Design Institute, Guiyang 550001, China
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(22), 6276; https://doi.org/10.3390/su11226276
Received: 9 October 2019 / Revised: 26 October 2019 / Accepted: 2 November 2019 / Published: 8 November 2019
(This article belongs to the Special Issue Smart Urban Planning and Land Management)
Baidu heat maps can be used to explore the pattern of individual citizens conducting their activities and their agglomeration effects at the city scale. To investigate the spatiotemporal pattern of population aggregation and its relationship with land parcel attributes in small cities, we collected Baidu heat map data for a weekday and a weekend day in Shehong County and used Getis–Ord general G and the raster overlay methods to analyze population aggregation spatiotemporal characteristics. Chi-squared and Pearson correlation tests were used to analyze the correlation between population aggregation and land parcel attributes against three types of land parcel divisions: land use parcels, road network blocks, and grids. The results showed that, (1) for most hours of the workday, the degree of population aggregation was greater than on the weekend, and the fluctuation magnitude on the workday was higher as well. (2) On the weekday, people clustered and dispersed faster than on the weekend. (3) On the weekday and weekend, the spatial position of people aggregation was highly overlapping. (4) The correlation between the degree of population aggregation and the type of parcel was not significant. (5) Regarding different parcel unit sizes, the correlations between population aggregation degree and point of interest (POI) density, floor area ratio, and building density were significant and positively correlated, and the correlation coefficients increased as the grid size increased. View Full-Text
Keywords: spatiotemporal behavior; Baidu heat map; Getis–Ord general G; correlation analysis; small city spatiotemporal behavior; Baidu heat map; Getis–Ord general G; correlation analysis; small city
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Feng, D.; Tu, L.; Sun, Z. Research on Population Spatiotemporal Aggregation Characteristics of a Small City: A Case Study on Shehong County Based on Baidu Heat Maps. Sustainability 2019, 11, 6276.

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