摘要
交通流是人流、物流等要素流动的主要载体和表现形式,对于认识城市间相互作用等具有重要意义。基于城市间公路、铁路和航空客流数据,对中国城市网络空间关联进行特征提取和规律挖掘。研究表明:1公路流表现出强烈的空间依赖性和对城市群发育程度的良好识别作用;2铁路流呈现出"两横三纵"带状分布格局;3航空流视角则基本形成了以"菱形结构"为核心的城市网络框架。不同类型交通流刻画出不同层面的城市间关联格局,但却有着其内在联系。航空流是城市关联格局骨架构筑的主要形式,铁路流则为核心骨架的连通提供支撑轴带,而公路流是对整体骨架和支撑轴带的有效填充,从而形成区域间相互依赖、不可或缺的要素关联和空间关系。
Traffic flow acts as a major carrier of other flows （including people, goods, capital, etc.）, thus the study on traffic flow is of great significance to understand intercity interaction. Based on the 321 cities at prefecture level or above, this article explores spatial linkage of China＇s city network using intercity linkage data of road, rail and air transport. The research results show that： （1） The spatial correlation of city network based on road linkage displays strong spatial dependence, which is very useful to identify urban agglomerations and assess developments. Besides the most developed regions including Yangtze River Delta, Pearl River Delta and Beijing-Tianjin-Hebei urban agglomerations, some important urban agglomerations have emerged, such as Zhongyuan, Harbin-Daqing-Qiqihar, Central Jilin, Central-southern Liaoning, Shandong Peninsula, Guanzhong, West coast of Taiwan Straits, Wuhan, Central Yunnan, Changsha-Zhuzhou-Xiangtan. （2） The railway linkage flow reflects intercity external connection pattern, regional element relevancy and regional accessibility along with national railway artery. ＂Two horizontal and three longitudinal＂ zonal distribution patterns composed of Beijing-Guangzhou, Beijing-Harbin, Beijing-Shanghai Railway and Longhai-Lanxin, Shanghai- Kunming Railway, constitute the urban network backbone and have become the most important economic axial belts for national territorial development. （3） The ＂diamond structure＂ as the core framework basically forms the skeleton of urban network system from the perspective of air passenger flow, whose vertices are Beijing, Shanghai, Guangzhou-Shenzhen and Chengdu- Chongqing. Generally speaking, different types of traffic flows reflect different patterns of intercity linkage, namely, there also exists internal relationship. Air passenger flow constitutes the backbone of intercity linkage pattern, railway linkage flow acts as supporting axis belts for the core framework, and road linkage is a bridge connecting main skeleton and supporting belts. All types of traffic flows collectively form interdependent and indispensable element correlation and spatial relationship among regions.
出处
《地理研究》
CSSCI
CSCD
北大核心
2015年第11期2073-2083,共11页
Geographical Research
基金
国家自然科学基金项目(41401172)
关键词
交通流
城市网络
城市体系
层级结构
区域关联
traffic flow
city network
urban system
hierarchical structure
regional linkage
