摘要
在全国地级以上中心城市腹地划分中同时考虑中心城市综合规模与交通条件,采用主成分分析法与指标体系评价城市综合规模,并通过场强模型,借助GIS软件,采用成本加权栅格法与空间叠加等技术得到283个地级以上城市的场强,并划分城市腹地.结果表明:全国场强整体格局为东、中、西递减趋势,高场强区呈现出东部成片、中部成串、西部成点状的特点,高场强区沿快速交通干道向外延伸.中心城市腹地空间关系体现空间等级层次关系.根据腹地分析结果与行政范围,将全国划分为3个一级经济区,9个二级经济区,33个三级经济区.
The scales of city centers and traffic conditions were comprehensively considered during hinterland delimitation. The principal component analysis method was used to calculate urban synthetic scale value with the indicators system. In addition, with the field-strength model, a spatial database was built and the cost time weighted grid method was used to acquire 283 cities＇ field-strength the light of ＂maximal field-strength choosing＂ principle and their hinterland delimitated with the support of GIS software. The conclusion indicates that the overall spatial pattern of field strength shows a descending trend from east to west. High field strength value region shows an area shape in the east region, a string shape in the middle region and a point shape in the west region, besides an additional extension along the rapid transit corridors. Spatial relation among cities＇ hinterland reflects spatial hierarchy among cities. The whole country is divided into three first-class economic regions, nine second-class economic regions and thirty-three three- class economic regions based on the hinterlar_,d delimitation and administrative scope.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第4期58-64,69,共8页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金项目(40871261
40371038)
关键词
时间可达性
腹地
经济区划
time accessibility
hinterland
economic zone
