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

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,对毕节市进行了乡镇等级体系划分,并探讨了乡镇影响范围。结果表明,毕节市是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8个乡镇为辅助,共41个乡镇4个等级的乡镇体系,符合当前毕节市发展的实际情况。

大方县乡镇等级体系划分及影响范围研究

基于乡镇层面,结合Voronoi图和断裂点理论,划分贵州省大方县乡镇等级体系及其影响范围,探讨小尺度视角的等级体系。结果表明:大方县以大方镇为核心,北部大石镇、东部沙厂乡为辅助,三元乡、竹园乡、八堡乡、普底乡、理化乡、鼎新乡为协同,共同辐射带动大方县36个乡镇发展,能够基本反映大方县乡镇等级,符合发展现状,对小尺度区域的体系规划、经济区划具有一定参考价值,并可通过完善属性数据以及多种方法的修正,增加范围划分的准确性。

Township Classification and the Sphere of Influence Based on Voronoi Diagram——A Case of Bijie City

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 influ- ential sphere were determined and related methods and technologies were explored.