China has faced a period of rapid urbanization,and also witnessed a rapid growth of urban land.The study on the changing rules of city size distribution of China is conducive to the rational allocation of urban land and the coordinated development of urban system in the urbanization process.On the basis of the data on the built-up areas of China's cities in prefecture-level and above from 2000 to 2012,this paper studies the change trend of the city size distribution in China and analyzes the regional differences in the changes by adopting the rank-size rule and fractal theory.The results show that:1) the built-up-area-measured city size distribution of China is consistent with the rank-size law; 2) the logarithmic rank-size curves of the city size parallel and move outward,indicating that the total amount of urban land have increased,but the Zipf index of city size distribution has increased over time,indicating that the equilibrium degree of city size distribution have declined; 3) the growth rates of the urban land in the cities with built-up areas more than 500 km2 and between 200-500 km2 have been greater than those in the cities with built-up areas between 50～200 km2 and less than 50 km2 ; 4) The change of the city size distribution in different regions is different from each other,and among the four regions,the Zipf index of city size in the east region is always closest to the ideal value of 1,suggesting that the development of urban land in high,medium and low ranks in the east region is relatively coordinated,while the city size distribution in the northeast and west regions has a tend of being concentrated,with the high-rank cities having faster land expansion than the medium and low-rank cities,and the city size distribution in the central region is relatively scattered,but in recent years,the high-rank cities have expanded significantly.
land useurban land scalerank-size lawPareto formulafractal
国家科技期刊平台
NSTL
维普
万方数据
