信息渠道对城市居民迁居空间的影响——以南京为例

根据搜寻空间理论,网络渠道能够提供比传统渠道更多的住房信息,减少居民迁居过程中对原住房周边区域的依赖,从而扩大了居民迁居的搜寻范围。但是,与远程办公和住房选择关系的研究相比,学者较少关注网络渠道对居民实际迁居空间的影响。基于南京城区居民迁居活动调查数据,利用三维核密度和多项式逻辑回归模型,重点分析不同信息渠道使用者的迁居时空特征、信息渠道对使用者迁居空间的影响。研究发现,近年来网络渠道已经成为居民迁居过程中的主导住房信息获取方式,其使用者的迁居距离大于传统渠道使用者,丰富了现有关于ICT对居民迁居空间影响的学术研究,也为城市住房信息管理和住房空间规划提供借鉴。

The impacts of information channels on moving space:A case study on Nanjing

According to the theories of housing search space and anchor point, Internet channels (e.g., housing websites, real estate agents) can provide more housing information (e.g., prices, locations, styles, years, facilities) than traditional channels (e.g., newspaper, TV, advertisements, introduction from friends or relatives) to reduce limitations of previous houses where movers have higher flexibility to choose their new houses to extend search spaces in their moving processes. However, the previous studies usually focused on some factors of residential mobility including housing price, transport, household composition, lifestyle, service facility, neighbourhood environment, employment opportunity, rather than ICT (telecommuting and information channel). Meanwhile, compared with studies on relationships between telecommuting and residential mobility (telecommuters are more likely to make longer moving distance or move into suburban areas because of flexible ways of working, which can reduce limitations of workplace in the moving processes), few scholars have paid their attention to the impacts of information channels on residents' moving space. This paper collected data from the survey of residential mobility in Nanjing city. It mainly used 3D Kernel density analysis to simulate space-time characteristics of different information channel users, and also Multinomial Logistic Regression to demonstrate the impacts of information channel on moving space. Three consequences were found by the above analyses. Firstly, males, young persons, and high-educated and high-income individuals preferred to use Internet channels to collect housing information. Secondly, Internet channel has become the most popular tool for residential mobility to obtain housing information in recent years compared to usage of traditional channels in the earlier times. Finally, more importantly, the Internet channel users were likely to make longer moving distance than the traditional channel users because of more and detailed housing information obtained from websites and real estate agents. On the one hand, these findings can enrich the present studies in the impacts of ICT on moving space in which internet channels take a directive role in the expansion of moving space as well as telecommuting. On the other hand, they are useful to housing information management (e.g., sharing platform building of urban housing information for reducing the "digital divide" among different groups) and housing spatial planning for urban governments (e.g., optimization of urban housing space, especially the one in suburban areas).