摘要
在对Converse断裂点模型进行改进的基础上,通过构建评价指标体系和计算城镇中心性强度,对天水市城镇体系等级结构进行了划分;通过运用加权Voronoi图,划分了城镇影响范围和城镇经济区。研究表明:1)天水市城镇体系等级分化非常明显,可按中心性值的大小分为3个等级,其中一级城镇主要为天水各县区政府所在地;2)基于加权Voronoi图的城镇经济区打破了行政区划界线,更符合区域"城镇-腹地"相互联系和作用的实际;3)城镇影响空间既受城镇综合实力和区位交通条件的影响,也与地形、资源分布以及历史文化等因素密切相关。在天水市东部和南部,城镇空间影响范围明显大于中部和北部地区。
Based on the improved model of Converse breaking point,the hierarchical structure of urban system have been divided in this paper by building evaluation index system and calculating centricity strength of towns.In addition,the influence space of towns have also been divided through the methods of weighted Voronoi diagram.The results show that: 1) The differentiation of urban system are very obvious and may divide into three grade in Tianshui,most of the towns of county government station belong to the first grade; 2) Administrative division have been broke by the towns economic zone which based on the weighted Voronoi diagram,and more in line with the actual of interaction between towns and hinterland; 3) Influence space of towns not only impacted by urban comprehensive strength,location and traffic conditions,but also closely related to the terrain,resource distribution,history and culture. In southern and eastern of Tianshui,the influence scope of towns are significantly greater than central and northern region.
出处
《地域研究与开发》
CSSCI
CSCD
北大核心
2017年第6期70-75,共6页
Areal Research and Development
基金
国家自然科学基金项目(40971106)
关键词
城镇中心性
城镇等级结构
Converse断裂点模型
城镇影响空间
天水市
urban centricity
hierarchical structure of urban system
model of Converse breaking point
influence space of towns
Tianshui City
