安徽省城市体系等级规模结构特征及其调整

等级规模结构是城市体系的三大结构之一，其特征可以反映出城市在不同规模级中的分布状况及城市人口集中或分散的程度，有助于认识城市体系发展所处的阶段。运用统计数据，在深入分析的基础上，发现安徽省现状城市体系的等级规模结构呈位序—规模分布；城市首位度偏低，规模效应不明显；城市规模总体偏小，特大城市和大城市发育不足，中等城市突出；城市规模空间分布不均衡，区域分异明显。在安徽省城市体系动态变化过程中，等级规模结构相对稳定但不断趋于集中，首位城市发展潜力较大，同时各规模级城市具有不同的变化趋势和特征。在此基础上提出了加快皖江城市带的建设、促进皖北城市群的发展、提高皖南中等城市和中心镇水平等优化建议。

CHARACTERISTICS AND ADJUSTMENT OF THE HIERARCHICAL STRUCTURE OF THE URBAN SYSTEM IN ANHUI PROVINCE

Hierarchical structure is one of the three structures in urban system, reflecting the variation of cities in scale, concentration or dispersion of the urban population, and it is of help for understanding the phase of urban system. This paper analyses the characteristics of urban system in Anhui Province. It is found that this region exhibits a city-size distribution following the rank-size rule. The urban primacy index is low, the scale effect is inevident, the urban scale is small in whole, the development of metropolis and big cites is not enough, medium-sized cities is prominent and the spatial distribution of cities is not equal. The urban system is in kinesis variation, scale structure is stable comparatively and is concentrating continuously, with primacy city developing potentially. And cities in different levels have different trends and characteristics of changes. The paper put forward several measures such as to escalate the construction of the Wanjiang urban area, speed the development of urban group in north Anhui, and to enhance the level of medium-sized cities and central towns in south Anhui.