Abstract
Based on the modified gravity model and social network analysis method, the paper constructed the economic linkage intensity matrix of 34 prefecture-level cities of Northeast China and analyzed the density and structure of urban linkage networks. The results show that at present, the urban linkage network in the Northeast region is getting closer, and the radiation role of core cities is gradually increasing. However, the degree of regional integration in Northeast China is not high, and some remote cities are still semi-isolated from the network.
Highlights
Urban network refers to a networked group of cities of different scales and functions that are closely connected in terms of resources, industries, information, and transportation
The "time distance" refers to the actual time required to travel between cities by various modes of transportation; the "monetary distance" refers to the actual price required to travel between cities by various modes of transportation
This paper focuses on the 34 prefecture-level cities of is classified into in-degree centrality and out-degree centrality
Summary
Urban network refers to a networked group of cities of different scales and functions that are closely connected in terms of resources, industries, information, and transportation. The closeness degree and spatial structure of urban networks have become important indicators in measuring the social and economic development of a region. Domestic scholars have mainly focused on provincial areas and more developed city clusters. They implemented their research based on gravity models [5], affiliation models [6], and urban flow intensity models [7] to analyze urban accessibility and urban cluster economic linkage patterns. The paper analyzes the density and structure of economic linkage network based on social network analysis. On this basis, policy recommendations are proposed to strengthen the spatial linkages of Northeast cities
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