基于微博签到数据的成渝城市群空间结构及其城际人口流动研究
作者简介:潘碧麟(1997-),女,硕士生,主要从事大数据与智慧城市研究。E-mail:Panbilin_nju@163.com
收稿日期: 2018-05-10
要求修回日期: 2018-11-21
网络出版日期: 2019-01-20
基金资助
重庆市高等教育教学改革研究项目(183171)
重庆市2017年高技术产业重大产业技术研发项目(2017-1231)
中国科学院大学生创新实践训练计划项目
Spatial Structure and Population Flow Analysis in Chengdu-Chongqing Urban Agglomeration based on Weibo Check-in Big Data
Received date: 2018-05-10
Request revised date: 2018-11-21
Online published: 2019-01-20
Supported by
Higher Education Teaching Reform Project of Chongqing, No.183171
Chongqing R&D Project of the High Technology and Major Industries, No.2017-1231
Chinese Academy of Sciences Undergraduate Innovation Training Program
Copyright
随着区域一体化进程的加快,中国城市群快速地发展起来,城市群城际间的人口流动研究得到了国内外学者的关注。城市群空间结构的研究以地理实体空间分析为主,城际人口流动的研究多使用传统统计数据,而将大数据运用于城市群空构特征,并结合传统的社会经济统计数据对该区域人口流动的影响因素进行分析。研究发现:① 微博签到数据进一步解释了成渝城市群呈现出“双核多中心”的组团特征,成都市和重庆主城构成了“双核”;② 微博人口流动的方向会受到行政区划的影响,微博人口流动的强度呈现出一定的等级差异;③ 微博人口流动的强度与方向同社会经济发展水平呈现出相对一致性,即地区生产总值越高、人口规模越大或交通联系强度越强,则人口流动越强烈。
潘碧麟 , 王江浩 , 葛咏 , 马明国 . 基于微博签到数据的成渝城市群空间结构及其城际人口流动研究[J]. 地球信息科学学报, 2019 , 21(1) : 68 -76 . DOI: 10.12082/dqxxkx.2019.180235
With the rapid development of regional integration, nowadays the regional inter-city migration gets the more attention of the scholars at home and abroad. Micro-blog, as one of the most popular application in China, has become a hotspot of research in areas such as sociology and computer. Check-in, as one of Micro-blog's functions, can reflect the flow of inter-city population in real time. We used the crawler program to collect the research samples in the Chengdu-Chongqing urban agglomeration in January 2014. The information includes the Micro-blog's unique ID number, the grid coordinates of Micro-blog sending place, and the city code of the registered place, etc. By running this program, a total of 804204 valid Micro-blog check-in data weare obtained from the Chengdu-Chongqing urban agglomeration. Based on Micro-blog checking areas, this study analyzeds the spatial structure of the Chengdu-Chongqing urban agglomeration. And Wwe combined the micro-blog data with the traditional socioeconomic data, in order to analyze the impact factors of the regional migration. The results indicates that the spatial structure of micro-blog shows the characteristics of "many centers of dual-core" group in this area. There are only two cities whose micro-blog flows are more than 100,000. They are Chengdu and Chongqing, forming athe “dual-core”. The direction of Micro-blog flow is affected by administrative division, and the intensity of Micro-blog flow presents a certain grade difference. The network shows an obvious hierarchy, and it closely correlatesnnects with the actual social-economic area closely, such as GDP, population size and the strength of traffic connection. For Chengdu and Chongqing, its GDP ranksed first and second,1, 2 respectively, with athe population size all of greater than 7.59 million and both as a regional transport hubs, it makes their micro-blogWeibo flows areintensity in ranked 1st and, 2nd, places respectively. Lastly, there are still some differences between Micro-blog's space and the actual geographic space inof Chengdu-Chongqing urban agglomeration. In the background of the national Yangtze River Economic Belt and China's new urbanization, we put the network information into the geographical space. Actually In this paper we discovered the spatial network characteristics of Chengdu-Chongqing urban agglomeration, and then this paper pointeds out the influence of socioeconomic factors on Micro-blog cyberspace flow. Of course, there may still be other factors behind Micro-blog's cyberspace, which need to be explored and analyzed in the future.
Fig. 1 Night lights from remote sensing图1 夜晚灯光遥感 |
Fig. 2 The spatial distribution of micro-blog图2 微博空间分布 |
Fig. 3 The matrix of population flow图3 人口流动矩阵 |
Fig. 4 The diagram of micro-blog flow图4 微博流量 |
Tab. 1 City orientation of Chengdu-Chongqing urban agglomeration表1 成渝城市群的城市定位 |
城市定位 | 城市目录 |
---|---|
辐射带动城市 | 重庆、成都 |
区域中心城市 | 万州、黔江、绵阳、南充、乐山、泸州、宜宾 |
重要节点城市 | 涪陵、长寿、江津、合川、永川、南川、綦江、大足、璧山、铜梁、潼南、荣昌、梁平、丰都、垫江、忠县、开县、云阳、达州、内江、自贡、德阳、眉山、遂宁、资阳、广安、雅安 |
注:来自2016年4月《成渝城市群发展规划》。 |
Fig. 5 The density of Micro-blog activity图5 微博活动空间密集度 |
Fig. 6 Comparisons of the intensity of micro-blog flow with the social-economic development level图6 微博流动强度与社会经济发展水平 |
Fig. 7 The GDP of each district cities图7 各地级市地区生产总值 |
Fig. 8 The size of city household register图8 各市户籍人口规模 |
Fig. 9 The relationship between traffic network and Micro-blog space图9 交通网络与微博空间关系 |
Fig. 10 The strength of the transport links图10 成都和重庆主城的交通联系 |
The authors have declared that no competing interests exist.
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