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| MEASUREMENT AND COMPARISON ON THE EXTROVERT SERVICE FUNCTION OF THREE URBAN GROUPS IN BOHAI RIM |
| JIANG Bo, XIU Chun-liang, ZHAO Ying-hui |
1. College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China;
2. College of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, China |
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Abstract The extrovert service function of cities is very important in the economic contacts among urban groups and regions, which is measured to calculate the extrovert energy, the intensity of urban flow and the degree of tendency based on a series of indexes such as urban population, GDP, employees in the main departments, and so on. The intensity of urban flow is one of the important quantified guidelines to reflect the extrovert service function. The paper, first, introduces the main researches on the extrovert service function of the cities at home and abroad, including academic and empirical researches. Then, the paper narrates and studies the three urban groups in Bohai Rim, which are Beijing-Tianjin-Hebei, South-Central Liaoning and Shandong peninsula. What's more, the paper analyzes the extrovert service function of these three urban groups. The extrovert energy, the intensity of urban flow and the degree of tendency of three urban groups in Bohai Rim in 1997 and in 2004 are measured, and then the results of these two years are contrasted. The extrovert energy, the intensity of urban flow and the degree of tendency of some important cities in the urban groups are also analyzed. Besides, the three urban groups in Bohai Rim are compared with Yangtze delta and Pearl River Delta urban groups in southeast China. It is concluded that the intensity of the extrovert service function of Beijing-Tianjin-Hebei is the strongest in the three urban groups. South-Central Liaoning follows while Shandong peninsula is the weakest. The extrovert service function of cities in Beijing-Tianjin-Hebei and Shandong peninsula is becoming closer, but those of cities in South-Central Liaoning get looser in 2004 than in 1997. The extrovert service function of the three urban groups in Bohai Rim is weaker than that of Pearl River Delta. The extrovert service function of Beijing-Tianjin-Hebei is little stronger than Pearl River Delta, and that of the extrovert service function of South-Central Liaoning and Shandong peninsula is weaker than Pearl River Delta.
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Received: 14 December 2007
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2009, Vol. 24 
