福建省城镇体系分形研究

应用分形理论对福建省城镇体系进行了规模和空间结构研究,验证了福建省城镇体系得规模分布和空间布局均符合局部的分形特征,同时得出以下结论:第一,福建省城镇体系规模分布还处于初级的首位型阶段,城镇体系规模等级发育不成熟;第二,福建省城镇体系在空间分布上存在区域、地方两个不协调的现象;第三,福建省地区城镇体系交通网络的通达性较高,城市间联系较为紧密,但也注意到区域城镇网络的均衡性还有待提高。最后,通过自然、社会及历史等原因对成因进行讨论,据此提出福建省城镇体系结构优化的建议。

Fractal Study on Urban System in Fujian Province

Based on the fractal theory,the size distribution and spatial distribution of urban system have been studied.The paper made deep study on the urban system of Fujian Province,and proved that the cale and spatial distribution of urban system both take on fractal structure.The conclusions show that: firstly,the scale of urban system is at the primary first stage,the development of urban system is not yet mature.The biggest town is too big but just single one and the middle towns are absent,so the scale structure is loose;secondly,the spatial structure of urban system is regionally and locally discordant,the spatial distribution is linear,and most towns lie on geographic areas which are the river and road corridor;thirdly,although the spatial relating degree and spatial interaction among cities are generally rapid and intense,the balance of regional urban network waits for the enhancement;finally,the paper discussed the reasons of the urban system's fractal features,then it pointed out how to improve the urban system by means of fractal theory in Fujian Province. During study on the urban system of Fujian Province with fractal theory,the process and results reveal the following questions: the first one is that to eliminate non-agricultural population to measure the size of towns fractal dimension,and we should access to the urban population census and county urban population size;The second one is that in measuring Town Center radius we should excluden the built-up area,and revise the center of gravity through its radius,as to prevent the fractal dimension calculated diverging from the actual value;Last,the fractal dimension of the measurement accuracy directly impact on the geographic data interpretation,and the theory system needs to be developed in the unity and comprehensiveness in the future.