基于Voronoi图的乡镇等级体系划分及影响范围研究——以毕节市为例

摘要

Supported by research available of township system and influential sphere,the research is conducted based on towns in Bijie City,as per Voronoi diagram and breaking point theory.In the research,Shixi Office dominated as the highest center and Salaxi Town and Haizijie Town were sub-centers,supplemented by Yachi Town,Zhuchang Town,Yangjiawan Town,Qingchang Town,Heguantun Town,Qingshuipu Town,Yanzikou Town and Longchangying Town.Hence,township system and influential sphere were determined and related methods and technologies were explored.%以现有城镇等级体系与空间影响研究为支撑,以毕节市乡镇为基础单位,基于Voronoi图技术,结合断裂点理论,以乡镇人口为参考属性划分得到以市西办事处为最高级主中心,撒拉溪镇、海子街镇为次级子中心,鸭池镇、朱昌镇等八个乡镇为辅助,共41个乡镇4个等级的毕节市乡镇体系,初步确定乡镇空间影响范围,探讨划分乡镇等级体系以及确定影响范闱的方法与技术.