地理研究 ›› 2016, Vol. 35 ›› Issue (5): 992-1002.doi: 10.11821/dlyj201605015

• 研究论文 • 上一篇    

基于交通信息流的长三角地区网络空间结构及其效率研究

叶磊1,2,3, 段学军1,3(), 吴威1,3   

  1. 1. 中国科学院南京地理与湖泊研究所,南京 210008
    2. 中国科学院大学,北京 100049
    3. 中国科学院流域地理学重点实验室,南京 210008
  • 收稿日期:2016-01-15 修回日期:2016-04-01 出版日期:2016-05-10 发布日期:2016-05-23
  • 作者简介:

    作者简介:叶磊(1988- ),男,江苏扬州人,博士研究生,研究方向为城市与区域规划。

  • 基金资助:
    国家自然科学基金项目(41071085);中国科学院知识创新工程重要方向项目(KZCX2-YW-339)

Spatial structure and efficiency of the urban network within the Yangtze River Delta based on traffic and information flow

Lei YE1,2,3, Xuejun DUAN1,3(), Wei WU1,3   

  1. 1. Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. Key Laboratory of Watershed Geographic Sciences, CAS, Nanjing 210008, China
  • Received:2016-01-15 Revised:2016-04-01 Online:2016-05-10 Published:2016-05-23

摘要:

基于2015年长三角地区25个地级市之间的公路、普速列车、高速列车与信息网络数据,对流视角下该地区的网络结构特征及其效率进行综合分析与判断。研究表明:① 流视角下长三角地区网络结构呈现出“Z”字型向“一轴多极”的网络空间结构转变、网络中核心与边缘城市节点价值的此消彼长和“等级+网络”等新特征;② 现代化的交通与通信技术变革加速了高端生产与管理要素在区域的集聚与扩散,促使长三角地区呈现出明显的“核心—边缘”格局;③ 长三角地区网络化的综合效率一般,仅有少部分城市达到了最优,但各城市的规模效率相对较好,是未来综合效率提高的主要影响因素。

关键词: 关联强度, 空间结构, 网络效率, 数据包络分析, 长三角地区

Abstract:

In the background of economic globalization and informatization, assessing spatial structures of mega-city regions has a long-term tradition in urban research. Network analysis, formulated by multi-disciplines ranging from sociology, information science and geography science, provides a new avenue to explore spatial structures at the regional scale. Based on the flow data of road, ordinary train, CRH (China Railway High-Speed) and Baidu index in 2015, this paper seeks to analyze and evaluate the features and efficiency of regional spatial structure among 25 cities in the Yangtze River Delta (YRD). The results are as follows: (1) Different from some previous studies, the spatial structure of the YRD detected in this paper is manifested in several new characteristics, such as transferring “Z” shape to “one axis and multi-core”, emerging a dynamic shifting node value between core and periphery cities and a tendency of “hierarchy + network”. (2) The innovation of modern transportation and communication technologies have accelerated both agglomeration and diffusion of the sophisticated production and management factors and also increasingly promoted each city node to connect with the cores and produced the main connections with non-adjacent nodes at the same time. Consequently, the network structure of the YRD shows an obvious “core-periphery” pattern. (3) The network efficiency of the YRD is not high because only a small number of cities have had the most optimal efficiency. It is indicated that the YRD has great potential in improving its network efficiency. However, most city nodes perform well in terms of scale efficiency, which is the main reason for the increase in comprehensive efficiency in the future. (4) Most cities in the YRD fail to reach the optimal state in terms of network efficiency. The result implies that the development mode of relying on large-scale investment in exchange for the cities' high speed growth may come to the end. Therefore, for most cities in the YRD, promoting the efficiency of urban development is an essential path to increase the value of each city node in the context of the "new normal". In addition, more attention should be paid to avoid the blind investment and focus on technological progress, which accords with the declaration of innovation-driven transformation proposed in the "13th Five-Year Plan" of the central government.

Key words: relation strength, spatial structure, network efficiency, data envelopment analysis, the Yangtze River Delta