京津冀城市群经济空间联系与空间结构

采用改进引力模型,量化分析京津冀城市群的整体空间网络结构以及13个城市间的空间经济联系。研究发现,京津冀城市群内部城市空间联系水平存在明显空间分异和不均衡特征,并逐渐呈现多中心发展趋势;该城市群整体网络联系由京津向周边城市逐渐衰减,且具有显著的圈层结构特征。整体网络联系紧密,各城市间吸收、传递功能显著增强,但更多依赖北京和天津的辐射带动作用,城市群内部城市联系强弱存在明显不均匀特征,具有一定梯度层级。基于分析结果提出了优化京津冀城市空间网络结构的相关建议。

Economic Spatial Connection and Spatial Structure of Beijing-Tianjin-Hebei Urban Agglomeration

Using the modified gravity model,this paper takes 13 cities of Beijing-Tianjin-Hebei Urban Agglomeration as the research object,quantifies the spatial economic connection between cities,and intuitively analyzes the overall spatial network connection of Beijing-Tianjin-Hebei Urban Agglomeration.This results show that the spatial connection level of Beijing-Tianjin-Hebei Urban Agglomeration has obvious spatial differentiation and imbalance characteristic,and gradually presents the trend of polycentric development.The overall network connection of the urban agglomeration gradually decays from Beijing and Tianjin to the surrounding cities,and has a significant characteristics of circle structure.The overall network is closely linked,and the absorption and transmission functions among cities are significantly enhanced,but more dependent on the radiation and driving role of Beijing and Tianjin.The strength of urban ties within the urban agglomeration is obviously uneven with a certain gradient level.Based on the analysis results,some suggestions are put forward to optimize the urban spatial network structure of Beijing-Tianjin-Hebei.