| Empirical Analysis of City Contact in Zhujiang （Pearl） River Delta,China |
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| 作者姓名： | TONG De LIU Tao LI Guicai YU Lei |
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| 作者单位： | [1]Peking University Shenzhen Graduate School, Shenzhen 518055, China [2]Zhejiang Province Development Planning ＆ Research Institute, Hangzhou 310005, China |
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| 基金项目： | Under the auspices of National Natural Science Foundation of China （No. 41271177）, Guangdong Natural Science Foundation （No. S2012010008902）; |
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| 摘 要： | In traditional urban geography, city contact research is a classic study element in city research. In general, researchers use the traditional gravity model to characterize the contacts that exist between two cities. The traditional gravity model assumes ideal condi- tions, but these preconditions and their results often do not exist in realistic conditions. Thus, we used a modified gravity model to char- acterize the city contacts within a specific region. This model considers factors such as intercity complementarities, government inter- vention, and the diversity of the transportation infrastructure which is characterized as the transportation distance instead of the tradi- tional Euclidean distance. We applied this model to an empirical study of city contact in the Zhujiang （Pearl） River Delta （PRD） of China. The regression results indicated that the modified gravity model could measure city contact more accurately and comprehen- sively than the traditional gravity model, i.e., it yielded a higher adjusted R2 value （0.379） than the traditional gravity model result （0.259）. Our study also suggests that, in addition to urban-regional and metropolitan development, the complementarities of the basic functions of cities at the administrative and market levels, as well as the corporeal and immaterial levels, play very significant roles in the characterization of city contact. Given the complexity of city contact, it will be necessary to consider more relevant influential fac- tors in the modified gravity model to characterize the features of city contact in the future.
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| 关 键 词： | 城市地理学 珠江三角洲 三角洲地区 实证分析 中国 引力模型 交通基础设施 功能互补 |
Empirical analysis of city contact in Zhujiang (Pearl) River Delta,China |
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| TONG De,LIU Tao,LI Guicai,YU Lei.Empirical analysis of city contact in Zhujiang (Pearl) River Delta,China[J].Chinese Geographical Science,2014,24(3):384-392. |
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| Authors: | De Tong Tao Liu Guicai Li Lei Yu |
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| Institution: | 1. Peking University Shenzhen Graduate School, Shenzhen, 518055, China
2. Zhejiang Province Development Planning & Research Institute, Hangzhou, 310005, China
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| Abstract: | In traditional urban geography, city contact research is a classic study element in city research. In general, researchers use the traditional gravity model to characterize the contacts that exist between two cities. The traditional gravity model assumes ideal conditions, but these preconditions and their results often do not exist in realistic conditions. Thus, we used a modified gravity model to characterize the city contacts within a specific region. This model considers factors such as intercity complementarities, government intervention, and the diversity of the transportation infrastructure which is characterized as the transportation distance instead of the traditional Euclidean distance. We applied this model to an empirical study of city contact in the Zhujiang (Pearl) River Delta (PRD) of China. The regression results indicated that the modified gravity model could measure city contact more accurately and comprehensively than the traditional gravity model, i.e., it yielded a higher adjusted R 2 value (0.379) than the traditional gravity model result (0.259). Our study also suggests that, in addition to urban-regional and metropolitan development, the complementarities of the basic functions of cities at the administrative and market levels, as well as the corporeal and immaterial levels, play very significant roles in the characterization of city contact. Given the complexity of city contact, it will be necessary to consider more relevant influential factors in the modified gravity model to characterize the features of city contact in the future. |
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| Keywords: | city contact function complementarities government intervention gravity model Zhujiang （Pearl） River Delta （PRD） China |
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