PROGRESS IN GEOGRAPHY ›› 2012, Vol. 31 ›› Issue (12): 1656-1667.doi: 10.11820/dlkxjz.2012.12.011

• Original Articles • Previous Articles     Next Articles

The Relationship Between a City’s Size and Its Centrality in the Regional City Network: A Case Study of the City Network by Linkage of Basic Sectors in Shandong Province

CHAI Qing, WANG Maojun, XU Jie   

  1. Resource Environment and Tourism College, Capital Normal University, Beijing 100048, China
  • Received:2012-05-01 Revised:2012-08-01 Online:2012-12-25 Published:2012-12-25

Abstract: The factors that influence a city’s size are the important topics in the study of city networks. Based on a basic economic model, and using a series of tables showing the basic input-output economic data in Shandong province, this paper creates a city network by linkage of basic sectors, discusses the cities’centrality levels in the network and the spatial distribution and characteristics of the cities’sizes, and analyzes the correlation between the size and centrality level. The conclusions are as follows: (1) the city network by linkage of basic sectors in Shandong province is a high density and multi-centered network. Each city serves as an opportunity and also constrain of the linkage to other cities. (2) the cities’centrality levels in the network shows a liner distribution without an obvious hierarchy, with majority of the cities at middle and low levels. (3) the cities’population sizes show a power-law distribution with a clear hierarchy. The populations of high level cities are dominantly large, and there is a dramatic drop in sizes from high to middle and low level cities where the population sizes continue to drop by gradually smaller decreases. (4) the cities’centrality levels in the city network are positively correlated to their population sizes, especially more striking for the cities with population sizes over 500,000, indicating that in the city network by linkage of basic sectors, more powerful a city is and more economic links the city has, more positive effects there are on the city’s population size.

Key words: city network, network centrality, Shandong Province, urban basic sectors, urban population scale