基于长三角与京津冀比较的区域经济增长的聚集效应与扩散效应研究
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摘要
聚集效应与扩散效应是推动区域空间结构演化的重要动力机制。本文利用经济集中度指数测度1995-2015年长三角与京津冀地区两大城市群的城镇体系发展状况,研究表明,长三角是以上海为核心,以南京、杭州和苏州为次一级核心的等级结构非常清晰有序的城市体系;而京津冀地区,不仅北京、天津双核协调度较低,而且城市等级结构不够清晰有序。运用位序-回归研究方法分析可以发现,长三角的城市体系日趋合理,而京津冀地区的城市体系却没有明显改善,两大城市群的帕累托指数差异呈现扩大趋势。因此,促进京津冀协同发展和城市群建设,应该借鉴长三角城市群的经验,北京、天津双核应该更好地通过扩散效应带动周边城市经济社会发展。
The aggregation effect and diffusion effect are the important dynamic mechanisms promoting the evolution of regional spatial structure. This paper uses the concentration index to measure the development status of urban system of the Yangtze River Delta region and the Beijing-Tianjin-Hebei region from 1995 to 2015. Research shows that the Yangtze River Delta is a very clear and orderly urban system,which takes Shanghai as the core and Nanjing,Hangzhou and Suzhou as the second core; in the Beijing-Tianjin-Hebei region,not only there is a low degree of coordination between Beijing and Tianjin,but also the urban hierarchy is not clear and orderly. Through the sequence-regression method,it is found that the urban system of the Yangtze River Delta is becoming more and more reasonable,while the urban system in the Beijing-Tianjin-Hebei region has not been improved significantly,and the difference of Pareto index in the two major urban agglomeration is expanding. Therefore,promoting the coordinated development of Beijing-Tianjin-Hebei region and urban agglomeration construction,should be based on the experience of urban agglomeration in Yangtze River Delta,that is,the dual-core in Beijing-Tianjin-Hebei region should play the diffusion effect better to drive the urban economic and social development.
The aggregation effect and diffusion effect are the important dynamic mechanisms promoting the evolution of regional spatial structure. This paper uses the concentration index to measure the development status of urban system of the Yangtze River Delta region and the Beijing-Tianjin-Hebei region from 1995 to 2015. Research shows that the Yangtze River Delta is a very clear and orderly urban system,which takes Shanghai as the core and Nanjing,Hangzhou and Suzhou as the second core; in the Beijing-Tianjin-Hebei region,not only there is a low degree of coordination between Beijing and Tianjin,but also the urban hierarchy is not clear and orderly. Through the sequence-regression method,it is found that the urban system of the Yangtze River Delta is becoming more and more reasonable,while the urban system in the Beijing-Tianjin-Hebei region has not been improved significantly,and the difference of Pareto index in the two major urban agglomeration is expanding. Therefore,promoting the coordinated development of Beijing-Tianjin-Hebei region and urban agglomeration construction,should be based on the experience of urban agglomeration in Yangtze River Delta,that is,the dual-core in Beijing-Tianjin-Hebei region should play the diffusion effect better to drive the urban economic and social development.
引文
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[3]陶敏阳,汪波,张铁刚.中国经济增长动力及区域差异因素研究——基于省域面板数据实证分析[J].区域金融研究,2017(3):70-76.
[4]郭岚,张祥建,李远勤.人口红利效应、产业升级与长三角地区经济发展[J].南京社会科学,2009(7):7-14.