中国城市规模幂律分布实证研究

发布时间：2018-02-16 16:00

本文关键词： 城镇化城市规模幂律分布 Zipf定律规模差异中国　出处：《经济地理》2017年01期 　论文类型：期刊论文

【摘要】：首先在数学上探讨城市规模的分布规律,证明城市规模服从Zipf定律。然后,在理论上阐述城市规模幂律分布的形成机制。实证研究采用2009—2013年全国地级市的人口规模数据和建成区面积数据来分析城市规模的分布规律。结果表明,中国地级市的城市规模服从幂律分布,且幂指数均大于1。随着城市发展,人口规模分布的幂指数呈现上升趋势,建成区面积的幂指数呈现下降趋势,表明中国大中小城市之间的人口规模差异程度在减小,但建成区面积之间的差距在增大。同时,比较中国东部、中部、西部城市规模分布的差异,结果显示,东部城市的幂指数最小,而且呈现逐年减小的趋势;东部城市之间的规模差异程度大于中部和西部,而且城市规模之间的差异正在变大。
[Abstract]:First of all, we discuss the distribution law of urban scale mathematically, and prove that urban scale is based on Zipf's law. The formation mechanism of the power-law distribution of urban scale is expounded in theory. The distribution of urban scale is analyzed by using the population scale data of prefecture-level cities and the area data of built-up areas in China from 2009 to 2013. The results show that, The distribution of urban scale in China's prefectural cities is based on the power law, and the power exponents are all greater than 1.As the development of cities, the power exponents of the population size distribution show an upward trend, and the power exponents of the area of the built-up areas show a downward trend. It shows that the difference of population scale between large and medium cities in China is decreasing, but the gap between the area of built-up areas is increasing. At the same time, the differences in the distribution of urban size between eastern, central and western China are compared, and the results show that, The power index of eastern cities is the smallest and the trend is decreasing year by year. The scale difference between eastern cities is larger than that of central and western cities, and the difference between cities is becoming larger.
【作者单位】：北京大学深圳研究生院城市规划与设计学院;
【分类号】：F299.2

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