广西城镇体系结构时空分异规律研究

Study on Spatial-temporal Differentiation Law of Urban Systems in Guangxi

关键词:  城镇体系  空间结构  城镇职能  时空分异  广西

Key words:  urban system  spatial structure  town function  spatial-temporal differentiation  Guangxi

摘要:

优化城镇体系地域结构和功能是解决区域协调发展和空间不经济的有效途径。本研究基于首位度及位序-规模法则、地统计方法和空间分析方法，从规模形态、功能结构和时空格局3个维度，系统分析了广西城镇体系演变规律,结果发现：①规模结构上，广西城镇化首位度低，空间集聚性弱，缺少大城镇和中心城镇，城镇体系结构离散性显著而聚集度不足；②功能结构上，广西城镇化发展缓慢，城镇体系分工协作弱，城镇集聚规模及其时空效益不显著；③空间结构上，广西城镇体系结构存在较弱的空间依赖性和离散性，第三产业对空间分异影响显著，但第二产业与城镇化发展关系密切，空间异质性显著。总的来说，广西需要通过优化城镇体系地域结构来集聚资源要素红利、把握发展机遇。

Abstract:

Optimizing the regional structure and function of urban system is an effective way to solve regional coordinated development and spatial diseconomy.Based on the primacy and size-ranking rule,geo-statistical method and spatial analysis method,the evolution law of urban system in Guangxi is systematically analyzed from three dimensions:Scale form,functional structure and spatial-temporal pattern.It is concluded that:① In terms of scale and structure,the primacy of urbanization in Guangxi is low,the spatial agglomeration is weak,large towns and central towns are lacking,and the urban system structure has significant dispersion and insufficient agglomeration.②In terms of functional structure,the development of urbanization in Guangxi is slow,the division of labor and cooperation of urban system is weak,and the scale of urban agglomeration and its temporal and spatial benefits are not significant.③ In terms of spatial structure,the urban system structure in Guangxi has relatively weak spatial dependence and discreteness.The tertiary industry has a significant impact on spatial differentiation,but the secondary industry has a close relationship with urbanization development,and the spatial heterogeneity is distinct.It is necessary to optimize the regional structure of the urban system to gather the dividend of resource elements and leapfrog development opportunities.