Journal of Geo-information Science >
Fine-grained Population Estimation and Distribution Characteristics in Shanghai
Received date: 2016-08-01
Request revised date: 2016-10-20
Online published: 2017-06-20
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Urban population distribution and its dynamic changes have been playing a key role in urban planning and management. Currently, the wide use of information communication technology (ICT) provides an opportunity to support fine-scale studies by acquiring accurate individual positioning data. By extracting regular individual trajectories from a mobile communication signaling dataset, this study established an estimation procedure of urban population distribution and quantitatively analyzed spatiotemporal characteristics of population distribution and migration in Shanghai. The results indicated that, firstly, mobile communication signaling data had the ability to describe the dynamic characteristics of urban population and to estimate the real population size of a city in a quantitative and relatively an authentic way by taking its advantages of wide sample coverage, high spatial resolution, good timeliness and multiple spatiotemporal scales. Secondly, population distribution of Shanghai on the whole is stable all day long. Comparatively, population at the daytime showed a more remarkable spatial agglomeration phenomenon than population at night. Thirdly, the population migration between urban functional areas and other areas is rare. During the rush hour in the morning and evening, the population migration was mainly depicted as a relatively equally both-way movements between central urban area and other new urban functional areas. Within each functional area, more than half of its population is not moving out. In conclusion, this study can be useful for urban planning, emergency management and public traveling information services.
LI Mingxiao , CHEN Jie , ZHANG Hengcai , QIU Peiyuan , LIU Kang , LU Feng . Fine-grained Population Estimation and Distribution Characteristics in Shanghai[J]. Journal of Geo-information Science, 2017 , 19(6) : 800 -807 . DOI: 10.3724/SP.J.1047.2017.00800
Fig.1 Urban functional areas in Shanghai图1 上海城市功能承载区示意图 |
Fig. 2 Spatio-temporal mapping of population density in Shanghai (one weekday)图2 上海市人口密度一日时空图谱(某工作日) |
Tab.1 The day and night population size of central urban area and new urban areas in Shanghai表1 上海市中心城区及各新城昼夜人口规模 |
区域 | 白天人口/万人 | 夜间人口/万人 | 昼夜人口比/% |
---|---|---|---|
中心城区 | 1109.30 | 1061.71 | 104.48 |
南桥新城 | 28.30 | 28.09 | 100.75 |
松江新城 | 92.87 | 89.67 | 103.57 |
闵行新城 | 145.16 | 152.73 | 95.04 |
嘉定新城 | 39.44 | 35.11 | 112.33 |
青浦新城 | 45.00 | 42.31 | 106.36 |
宝山新城 | 38.25 | 40.36 | 94.77 |
城桥新城 | 5.75 | 5.72 | 100.52 |
金山新城 | 18.94 | 19.54 | 96.93 |
临港新城 | 21.05 | 20.52 | 102.58 |
Fig. 3 The ratios of inflow and outflow population between urban functional areas in Shanghai图3 上海市城市功能承载区内外的人口移动率 |
Fig. 4 The population movement within urban functional areas in Shanghai图4 上海市城市功能承载区内部人口移动 |
Tab.2 The unbalanced factor of the main channels of population movement in Shanghai表2 上海市人口移动主要通道不平衡系数 |
主要通道 | 不平衡系数(早高峰) | 不平衡系数(晚高峰) |
---|---|---|
中心城区-闵行新城 | 1.352 | 1.389 |
中心城区-宝山新城 | 1.269 | 1.166 |
中心城区-松江新城 | 1.181 | 1.144 |
中心城区-嘉定新城 | 1.582 | 1.518 |
中心城区-青浦新城 | 1.366 | 1.378 |
中心城区-南桥新城 | 1.022 | 1.071 |
中心城区-临港新城 | 2.115 | 2.174 |
闵行新城-南桥新城 | 1.111 | 1.049 |
闵行新城-松江新城 | 1.236 | 1.172 |
The authors have declared that no competing interests exist.
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