| 区位选择与人文地理系统的分形优化——关于城市区位分形理论一般原理与方法的初步探讨 |
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| 引用本文： | 刘继生,陈彦光,余斌.区位选择与人文地理系统的分形优化——关于城市区位分形理论一般原理与方法的初步探讨[J].地理科学,1998(4). |
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| 作者姓名： | 刘继生 陈彦光 余斌 |
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| 作者单位： | 东北师范大学地理系，信阳师范学院地理系 |
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| 基金项目： | 国家自然科学基金,河南省自然科学基金 |
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| 摘 要： | 以城市区位论为主线，提出区位选择的分形思想和方法，旨在探讨人文地理系统空间优化的基本理论。指出区位选择和空间优化应该遵循三个基本原则：自相似原则、匹配原则和包容原则。
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| 关 键 词： | 区位选择 人文地理系统 城市结构 城镇体系 中心地 分形 分维 |
PRELIMINARY STUDIES OF FRACTAL MODELS AND FUNDAMENTALS OF URBAN LOCATION THEORY |
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| Liu Jisheng.PRELIMINARY STUDIES OF FRACTAL MODELS AND FUNDAMENTALS OF URBAN LOCATION THEORY[J].Scientia Geographica Sinica,1998(4). |
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| Authors: | Liu Jisheng |
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| Abstract: | Studies were made on fractal models, principles, and methods in the paper aimed at contributing to general urban location theory by means of fractal geometry. So far, we have had two important fractal models on urban location theory. One is called Five stars Network Model (FSN) on market location in urban districts, which possesses gold section and fractional dimension, and can be used to plan the spatial structure of a city or town. The other is named Koch Snowflake Model (KSM) on systems of urban and rural settlements, which have two kinds of patterns, and can be used to design or improve urban systems in a region. The former has a fractal dimension of 1.672, the latter, however, the theoretical values are calculated as 1.631 and 1.771, and the mean is 1.701. In addition, another model, Sierpinski Triangular Network (STN) on cities distribution and transport network was given and discussed simply. Three basic fractal principles were presented and suggested to be used when planning a city or a region. The first is self similarity principle, which demands that self similar structure should be introduced to human geographical system. The second is matching principle, which demands that the values of fractal dimension of some geo systems should be equal or close to one another when they become united. The third is containing principle, which demands that the fractal dimension of a subsystem must be smaller than that of its mother system, or the fractal dimension of a geosystem must be smaller than that of its environment. Several examples were given to illustrate how to use these models and principles for the purpose of planning and improving human systems. |
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| Keywords: | Selection of location Human geographical system Urban structure Urban system Central places Fractal Fractal dimension |
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