Journal of Geo-information Science >
Exploring Urban Human Spatio-temporal Convergence-Dispersion Patterns: A Case Study of Shenzhen City
Received date: 2015-06-24
Request revised date: 2015-10-07
Online published: 2016-04-19
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People′s movement in a city is driven by purpose. Moreover, the distribution of urban spatial structure can cause the phenomenon of human convergence or dispersion, and this phenomenon is always changing over time. Therefore, understand the spatio-temporal patterns of human convergence and dispersion could provide us a good knowledge of human travel demand in the urban context, so that the better decisions can be carried out to meet the demands of citizens. With the rapid development and widespread use of location-aware devices, it becomes relatively easy to collect the large-scale human sensor datasets and to bring new opportunities and challenges to the study of urban human mobility. Especially in recent years, mobile phone data has become a rich resource for research and it is widely used to study the human mobility patterns from various aspects, with regard to its advantage in tracking the long-term and large-volume of urban citizens with low cost. In this paper, taking Shenzhen City as an example, we firstly extracted the origin-destination flow matrix from the mobile phone location data and employed Local Moran′s I to identify people’s convergence or dispersion areas. And then a time series matrix was constructed according to the temporal signatures of these areas. SOM algorithm was selected to cluster the matrix into nine typical human convergence-dispersion patterns. Based on the land use data, we have calculated the percentage of different land use types for each pattern to explain the human convergence-dispersion phenomenon, thus we could understand the relationship between human mobility patterns and urban spatial function. This study helps us to acquire a good knowledge of the daily human convergence and dispersion patterns within different urban functional areas. The findings derived from this study could give us the insights about where and when the convergence and dispersion of people would occur in Shenzhen. This knowledge is helpful for the city planners to improve the urban local planning and makes it more suitable for human mobility applications, such as making targeted adjustments to optimize the urban transportation facilities to improve their service efficiency.
YANG Xiping , FANG Zhixiang , ZHAO Zhiyuan , SHAW Shih-Lung , YIN Ling . Exploring Urban Human Spatio-temporal Convergence-Dispersion Patterns: A Case Study of Shenzhen City[J]. Journal of Geo-information Science, 2016 , 18(4) : 486 -492 . DOI: 10.3724/SP.J.1047.2016.00486
Fig. 1 Grid area containing cell phone towers in Shenzhen图1 深圳市包含手机基站的网格区域 |
Fig. 2 Distribution of convergence and dispersion图2 聚集与消散区域分布 |
Fig. 3 Time series matrix图3 时间序列矩阵 |
Fig. 4 Spatial distribution of nine convergence-dispersion patterns图4 9种聚散模式的空间分布 |
Fig. 5 The time variations of convergence and dispersion for each pattern图5 每种模式人群的聚散时间变化 |
Fig. 6 The land use condition of each convergence-dispersion pattern图6 聚散模式的平均土地利用分布 |
Fig. 7 Spatial distribution of C2, C6 and C9图7 C2、C6和C9的空间分布 |
The authors have declared that no competing interests exist.
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