基于行政和几何中心的山区聚落空间结构对比: 以岷江上游为例  

Comparison of the Spatial Structure of Mountain Settlements Based on Administrative and Geometric Centers:Take the Upper Reaches of the Min River as an Example

作　　者：范娜 田述军[1] 宋丽君 杨兰 FAN Na;TIAN Shu-jun;SONG Li-jun;YANG Lan(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学土木工程与建筑学院,绵阳621010

出　　处：《科学技术与工程》2024年第12期5143-5151,共9页Science Technology and Engineering

基　　金：国家自然科学基金(41971214,41401195)。

摘　　要：为了优化山区聚落空间格局与合理规划国土空间,进一步推进乡村振兴的进程,探究山区聚落的空间结构特征是重要目标之一。以岷江上游山区聚落为研究对象,基于城市位序-规模原理、聚集维数和关联维数方法对岷江上游聚落行政和聚落几何中心的空间结构特征进行分析和对比,并总结其造成误差的原因。结果表明:岷江上游首位分布城镇体系结构特征明显,县域人口的累积百分比曲线符合位序-规模的特征。岷江上游聚落空间结构分形特征显著,受经济因素的重要影响,聚落在空间上聚集分布,并以各首位城镇为中心向周边逐渐衰减。岷江上游关联维数和牛鸦维数比所揭示的城镇相互作用强度和交通通达性特征与实际情况一致。行政中心造成的误差与研究区平均海拔关系密切,聚落行政中心在平均海拔高的区域相对几何中心的偏离较大,应重视其偏离对研究结果的影响。In order to optimize the spatial pattern of mountainous settlements and reasonably plan national land space,and further promote the process of rural revitalization,the spatial structure characteristics of mountainous settlements were regarded as one of the important research objects.The mountainous settlements in the upper reaches of the Min River were taken as the research object.Based on the principle of urban order scale,aggregation dimension and correlation dimension methods,the spatial structure characteristics of administrative and geometric centers of settlements in the upper reaches of the Min River were analyzed and compared,and the reasons for the errors were summarized.Results show that the structural characteristics of the first distributed urban system in the upper reaches of the Min River are obvious.the cumulative percentage curve of the county population is consistent with the characteristics of rank-scale.The fractal characteristics of the spatial structure of settlements in the upper reaches of the Min River are significant.Due to the significant influence of the economy,settlements gather and distribute in space,gradually decreasing towards the surrounding areas centered around the top cities and towns.The correlation dimension and the ratio of cattle to crows in the upper reaches of the Min River reveal the characteristics of urban interaction intensity and traffic accessibility,which are consistent with the actual situation.The error caused by the administrative center is closely related to the average altitude of the research area,and its deviation from the geometric center is relatively large in areas with high average altitude.The impact of its deviation on the research results should be taken seriously.

关 键 词：山区聚落 空间结构 聚落几何中心 聚落行政中心 岷江上游 

分 类 号：TU982.29[建筑科学—城市规划与设计]