中文摘要：

城市之间基于各种＂流＂的联系正在促使我国区域城市网络的形成,作为生产性服务业中掌握城市正常运转资金流的金融业,在城市网络结构的形程中扮演着重要的角色。选取银行、证券、保险等金融企业数据,从企业组织角度测度京津冀城市群的网络结构特征,依据京津冀区域金融企业分支机构数量等数据,构建企业网络服务值、企业网络连接通量、连锁链接数等多个指标分析京津冀城市群网络结构的网络性、中心性和功能性特征。研究结果表明：首先,京津冀城市群已初步形成网络化格局,城市间通过企业流的作用建立了不同程度的网络联系且层次分明;其次,区域中心城市发展差异化明显,北京的金融服务能力和中心性远高于其他城市,在空间格局上,天津作为区域双中心之一,其对外辐射能力明显不足,城市群多中心发展趋势仍然有待加强;再次,区域功能极化明显,区域金融产业集中于北京、天津、石家庄,其他中小城市的金融产业功能有待培育。最后,从金融产业层面提出构建世界级多中心网络型城市群,促进京津冀城市网络协同发展的政策建议。

英文摘要：

With banks,securities,insurance industry as the object of analysis,this paper measured the characteristics of the network structure of B Beijing-Tianjin-Hebei Urban agglomeration,from the perspective of micro enterprises. Based on the data of enterprise branches,we built the analysis index including value,connectivity,and linkage number,and divided the network structure into three dimensions： network,center and function. The result shows that,firstly,Beijing-Tianjin-Hebei region has initially formed the pattern of network. Through the enterprise flow,hierarchical city-to-city contact network has established. Secondly,Great development gap indeed exists in this region,considering the commercial service capability and the centrality of Beijing is far higher than other cities.Tianjin,as one of the two center cities,shows a lack of the ability of external radiation. The multi-center urban agglomeration development trend needs to strengthen. Besides,the regional function polarizes,with more than half of the industrial functions gathers in Beijing,Tianjin and Shijiazhuang. Therefore,the industrial function of small and medium-sized cities needs to be improved.Finally,this study puts forward the policy suggestions to form the world top-level urban agglomeration with multicenter and network,and to promote the coordinated development of Beijing-Tianjin-Hebei urban agglomeration.