基于GIS的甘肃省城市势力圈测度与分析

A GIS-based measurement for urban hinterland area in Gansu Province

利用GIS空间分析方法,借助场强模型,对甘肃省15个城市的势力圈进行了划分,并与市域行政范围进行了叠合分析.结果表明,甘肃省各城市的势力圈范围相差较大,势力圈与市级行政范围吻合度较差.依据势力圈的分析结果将甘肃省划分为5个1级城市经济区,在此基础上,提出了甘肃省城镇体系的空间发展策略.

The urban hinterland areas of the 15 cities in Gansu Province are measured by field-strength model based on GIS spatial analysis method, and the coherence and difference between hinterland area and administrative region are studied by overlaying these area with municipal boundaries. The results show that there are obvious difference among 15 cities in urban hinterland areas, moreover, the coincidence degree between urban hinterland areas and their administrative region is lower. According to the results and conclusions, Gansu Province can be divided into 5 first-class urban economic regions. On the basis of division for urban hinterland, some suggestions on fixing the region spatial structure of town system in Gansu Province are put forward.