国家尺度空间运输联系特征与区域发展趋势

空间运输联系反映了地理单元间的经济联系，是考察区域间相互作用的重要依据。首先，基于全国和省域层面运输联系数据，对中国区域尺度运输生成、增长、交流特征进行分析。结果显示，国家尺度空间运输联系呈现明显的分区差异特征：东部沿海地区面向全国的中心地位突出，运输联系呈现明显的区域化态势；中部地区受沿海经济中心吸引影响，运输联系处于离散状态；西南地区表现出与经济封闭性相对应的边缘且相互孤立的运输特征；全国层面呈现明显的以沿海为中心、以中部地区为主要腹地的大尺度物流运输特征。在此基础上，利用新经济地理学理论从外源导向的经济特征、距离约束、运输成本的变动三方面解析空间运输联系特征的形成机理。最后，从交通角度对川渝、中三角地区未来发展态势进行展望。

Nationwide Spatial Transportation Connection Characteristics and Regional Development Ten-dencies

As an important indicator of regional interactions, spatial transportation connection reflects the economic relations of geographical units. Based on national and provincial transportation connection data, the paper first analyzes the characteristics of transportation generation, growth and exchanges among different regions in China. Results show that nationwide spatial transportation connection exhibits significant regional differences. Eastern coastal area demonstrates a central position towards the entire country and its transportation connection shows clear regionalization; transportation connection of central China is well dispersed under the impact of coastal economic centers;southwestern China shows marginal and isolated characteristics of transportation connection, which is corresponding to its relative economic closure. Overall, the entire nation exhibits the characteristics of large-scale logistics transportation with the coastal area as the core and the central area as the major supplement. Based on the new economic geography theory, the paper discusses the mechanism of spatial transportation connection in three aspects：external source-oriented economic characteristics, distance constraints and transportation cost. Finally, the paper outlines the future transportation development in the Sichuan-Chongqing region and the central delta area.