四川省城市体系等级规模结构分形研究  

Fractal Analysis of the Rank-Size Structure of the Urban System in Sichuan Province

作　　者：谭建华[1] 涂建军[1] 杨宏玉[1] 王小飞[1] 杨乐[1] 

机构地区：[1]西南大学地理科学学院,重庆400715

出　　处：《西南大学学报（自然科学版）》2010年第10期142-147,共6页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(40701179)

摘　　要：等级规模结构是城市体系的三大结构之一,其重要特征是可以反映出城市在不同等级规模层次中的分布状况及城市人口集中或分散程度.运用分形理论,通过1997-2008年统计数据计算分析,发现四川省城市体系等级规模结构具有分形特征,满足位序—规模分布规律.研究表明:城市规模分布呈相对均衡,但并非理想状态,首位城市作用较强,大城市数量较多、分布分散,中小城市发育不全,人口有向少数大城市集中趋势.并据此提出了四川省城市体系等级规模结构的优化建议.Rank-size structure is one of the three major structures of the urban system, and its characteristics can reflect the size of cities in different grades and levels in distribution and the concentration or dispersion of the urban population. In this paper, the fractal theory is used to calculate and analyze the statistical data of 1997--2008 and it is shown that the structure of Sichuan urban system has fractal characteristics, which meet the rank-size distribution. The results indicates that city size distribution of Sichuan is relative- ly balanced, but not ideal, the first city plays a great role, the large cities are numerous and scattered, small and medium cities are poorly developed, and the population tends to shift to and concentrate in large cities. Some suggestions are offered for the optimization of the tank-size structure of the urban system of Sichuan.

关 键 词：城市体系 位序—规模分布 分形理论 四川省 

分 类 号：F292[经济管理—国民经济]