Urban clusters are crucial carriers of new urbanization and key growth poles for high-quality regional devel-opment.Exploring the hierarchical scale structure of urban clusters is vital for optimizing spatial layouts and promo-ting high-quality development in the region.The research explores the application of fractal theory in the study of the Lanzhou-Xining urban agglomeration.Using the Hausdorff dimension and Zipf's Law,a comprehensive fractal analy-sis was conducted on the hierarchical size structure of the Lanzhou-Xining urban agglomeration.The research find-ings reveal that the Lanzhou-Xining urban agglomeration system exhibits distinct fractal characteristics,confirming the applicability of fractal theory in analyzing the hierarchical size structure of urban agglomerations.Based on the fractal analysis and analysis of rank-size characteristics,the results indicate:1)Significant differences in population distribution exist within the region,with a relatively dispersed distribution of city sizes,where leading cities such as Lanzhou and Xining dominate.2)There is a relatively limited number of towns with development potential and popu-lation sizes falling within the second tier.3)The rank-size structure of cities in the fourth tier is overly concentrated,indicating a relatively balanced population distribution.4)The Lanzhou-Xining urban agglomeration is still in an ear-ly stage of development,and its hierarchical size structure requires further optimization.
关键词
分形理论/分维/规模结构/兰西城市群/齐夫定律
Key words
fractal theory/dimension/size structure/Lanxi urban agglomeration/Zipf's Law
维普
万方数据