CAJ | 학술논문

点-轴系统是我国区域城镇空间结构的主要模式之一.探索城镇点一轴系统空间结构,进而揭示其数理本质,是进行地理空间优化的理论基础.文章从分形理论出发,构建点-轴系统分形模型,明确该模型的地理意义,以此刻画点-轴系统的空间结构.利用GIS软件开发了点-轴系统分形模型计算工具.以济南市城镇-交通系统为例,在GIS数据环境下计算其分形模型参数,研究结果发现:①区域点-轴系统发育到一定阶段的确呈现分形性质,点-轴系统分形模型可以有效地反映点-轴系统空间结构形态;②无标度性、分形、有序性是地理空间的不同状态,推论得出随着点-轴系统的发展,其空间结构也经历着无序→无标度网络→分形结构→有序→更为复杂的无序的演进过程;③济南市城镇-交通系统已经形成点-轴系统的雏形,城镇点-轴系统处于发展阶段.
점-축계통시아국구역성진공간결구적주요모식지일.탐색성진점일축계통공간결구,진이게시기수리본질,시진행지리공간우화적이론기출.문장종분형이론출발,구건점-축계통분형모형,명학해모형적지리의의,이차각화점-축계통적공간결구.이용GIS연건개발료점-축계통분형모형계산공구.이제남시성진-교통계통위례,재GIS수거배경하계산기분형모형삼수,연구결과발현:①구역점-축계통발육도일정계단적학정현분형성질,점-축계통분형모형가이유효지반영점-축계통공간결구형태;②무표도성、분형、유서성시지리공간적불동상태,추론득출수착점-축계통적발전,기공간결구야경력착무서→무표도망락→분형결구→유서→경위복잡적무서적연진과정;③제남시성진-교통계통이경형성점-축계통적추형,성진점-축계통처우발전계단.
Pole-axis system is one of the main modes of Chinese regional spatial structure. It is an academic el-ement for geographical space optimization to research urban pole-axis system spatial structure and reveal its mathematics nature. Based on pole-axis system theory, a fractal model of pole-axis system was built, and then its geographical meaning was illuminated. According to the mathematic elements of pole-axis system fractal model, this paper developed counting program of fractal model by GIS software. Taking urban-traffic system in Jinan City, Shandong Province as an example, this paper counted the parameter of its fraetal model by using GIS data format. The results showed that: (1) The pole-axis system presented a fractal nature indeed when develop-ing to a certain stage, and the fractal model of pole-axis system can effectively reflect the spatial structure of pole-axis system. (2) Fractal, scale-free and order is the different states of geo-spatial. We deduced that its spatial structure has experienced an iterative process of disorder → scale-free → fractal→ order→ a more complex disorder with the development of pole-axis system. (3) The urban-traffic system in Jinan City, Shan-dong Province had shaped the rudimental structure of pole-axis system, which was in the developing stage.