加强东北地区经济联系有助于提升东北区域一体化水平,形成推动东北全面振兴的整体合力。基于修正后的引力模型和社会网络分析法对东北地区经济联系空间格局的演变特征进行分析,结果表明,东北地区经济联系网络整体密度呈先升后降的趋势,经济联系网络受省级行政区划的制约较为明显,同一省份内的城市经济联系更为密切。经济联系强度较强的地区主要集中在以沈阳市、大连市为中心的辽中南城市群,长春市、沈阳市、哈尔滨市三个省会城市的中心地位突出,黑河市、伊春市等资源枯竭型城市的经济联系强度偏弱,整体形成“南高北低”的分布格局,且网络重心具有向辽中南城市群移动的态势。促进制造业转型升级、提升市场需求、增强基础设施建设、加大对外开放力度有助于加强东北地区经济联系。
Strengthening economic connections in northeast China is conducive to enhancing the regional integration and forming a collective force for driving the comprehensive revitalization of northeast China. Based on the modified gravity model and Social Network Analysis, this paper analyses the evolutionary characteristics of the spatial pattern of economic connection in northeast China. The findings indicate that the overall density of economic connection network in northeast China has demonstrated an initial rise followed by a decline. The economic connection network is considerably constrained by inter-provincial boundaries, with stronger economic connections among cities within the same province. The regions with strong economic ties are mainly concentrated in the central and southern Liaoning city cluster with Shenyang and Dalian as the center. The three provincial capital cities maintain a dominant central position, while resource-depleted cities such as Heihe and Yichun are relatively less economically associated, resulting in a distribution pattern of higher inter-city economic connections in the south and lower in the north. The center of gravity of the network is moving to the central and southern Liaoning city cluster. Moreover, encouraging the transformation and upgrading of manufacturing, raising market demand, enhancing infrastructure construction, and increasing efforts towards opening-up can contribute to strengthening economic connections in northeast China.
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