STUDIES ON CENTRELITY OF PROVINCIAL CAPITALS
研究了省会城市中心性的度量方法，包括中心性指数和强度，分析了影响中心性的因素，并对中国262个主要城市进行了分类，识别出单中心与双中心省份类型。
Based on retrospect research approaches of city's centrality, this paper approaches the measure methods of centrality intensity of provincial capitals. City's centrality includes centrality exponent and intensity. Influencing factors of centrality of provincial capitals include provincial shape, position and comprehensive power of provincial capitals, power of regional cities and communication structure of provinces. This paper raises simple calculation formula of provincial shape and position of provincial capitals. We study the index to measure centrality exponent and measure the centrality exponents of 262 main cities in China. By the centrality exponents of cities, we classify cities into 4 classes. Shanghai, Beijing and Guangzhou are at the top of cities. Economic, population and geometric centroid of provinces in China are calculated using GIS software in this paper. We approach the types of top-level cities of every province in China, by the relations between three centroid and provincial capitals. There are two types of central cities in all provinces. One is unique center as most of provinces, the other is two centers that all is in province as Liaoning, Shandong and Fujian or each one is in province and one is out of province as Jiangsu, Guangdong, Zhejiang and Hebai. The conception and measure method of centrality intensity is given in last sector. This paper analyzes the reasons of some provincial capitals why their centrality is not strong, considering comprehensively influencing factors and centrality intensity. Results of this paper are significant to organize the economic core areas of China and adjust provincial regionalism.