黄河经济带空间结构及影响因素研究——与长江经济带的比较分析

Spatial Structure and Influencing Factors of the Yellow River Economic Belt:A Comparative Analysis with the Yangtze River Economic Belt

以黄河经济带城市为研究对象,基于空间和信息双重联系,应用引力模型和社会网络分析方法,构建经济带城市关联网络,从网络整体、凝聚子群及个体特征3个维度考察网络结构,使用QAP回归分析探究城市关联强度的主要影响因素,并以长江经济带为横向参考,评估黄河经济带空间结构及发展水平。结果表明:黄河经济带关联网络连通性良好,城市关联密切且稳定,具备构建经济带的可行性;城市关联强度分布较不均衡,表现出明显的“西疏东密”空间格局;初步形成了以西安、郑州、济南等为中心的三大城市群,核心城市在中心性、接近性和中介性方面均表现出“极化”效应。回归分析表明基础设施投资强度、劳动力数量、城市规模和科技投入水平对城市在网络中地位有显著的影响。

Taking the cities in the Yellow River Economic Belt as the research objects,based on the dual connection of space and information,the city affiliated network of the Yellow River Economic Belt was constructed by using gravitation model and social network analysis method.The network structure was explored from the three dimensions of the whole network,agglomerated subgroups and individual characteristics.And the main influencing factors of urban association intensity were explored by using QAP regression analysis.Also taking Yangtze River Economic Belt as a horizontal reference,the spatial structure and development level of Yellow River Economic Belt were evaluated.The results show that:Yellow River Economic Belt has good network connectivity and close and stable urban connection,so it is possible to build economic belt.The distribution of intensity of urban correlation is relatively uneven,showing a clear spatial pattern of“western sparse and east dense”.Three urban agglomerations centered on Xi’an,Zhengzhou and Jinan have been initially formed.The core cities show“polarization”effect in the aspects of centrality,proximity and intermediary.And the QAP regression analysis shows that the intensity of infrastructure investment,the number of labor forces,the size of city and the level of technology investment have significant effects on the status of cities in the network.