| 城乡人口地域分异特征的多分形刻画 |
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| 引用本文： | 陈彦光,张大丽. 城乡人口地域分异特征的多分形刻画[J]. 信阳师范学院学报(自然科学版), 2006, 19(1): 42-46 |
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| 作者姓名： | 陈彦光 张大丽 |
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| 作者单位： | 1. 北京大学,环境学院地理科学中心,北京,100871
2. 河南大学,环境与规划学院,河南,开封,475001 |
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| 基金项目： | 国家自然科学基金资助项目(40335051,40371039)，美国UrbanChinaResearchNetworkSmallGrantProgram资助课题的基础理论部分(2003Spring) |
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| 摘 要： | 从城市-乡村人口二尺度递阶分布的假设出发,构造城乡人口交叉分布的多分形系列模型.根据这些模型,借助区域城市化水平,可以方便地估计城乡地域分异的多分维谱.以中国和美国的城市人口比重为例,说明了多分维谱的计算方法.根据理论分析和计算结果,提出了反映人文地理系统空间利用效率的计量公式.在实践中,可以根据多分形的结构反过来划分城乡地域范围,揭示其区域系统的空间结构特征.
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| 关 键 词： | 城市化水平 城乡人口分布 多分形 空间复杂性 |
| 文章编号： | 1003-0972（2006）01-0042-05 |
| 收稿时间： | 2005-05-24 |
| 修稿时间： | 2005-05-24 |
Multifractal Characterization of the Distribution Pattern of the Urban and Rural Population |
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| CHEN Yan-guang,ZHANG Da-li. Multifractal Characterization of the Distribution Pattern of the Urban and Rural Population[J]. Journal of Xinyang Teachers College(Natural Science Edition), 2006, 19(1): 42-46 |
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| Authors: | CHEN Yan-guang ZHANG Da-li |
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| Abstract: | A series of multifractals models are made based on the assumption that urban and rural population distribution conforms to a rule of cascade structure.The models can be employed to characterize the distribution pattern of spatial dynamics of urbanization.Taking USA and PRC as examples,multifractals spectra are estimated using levels of urbanization.According to both the theoretical inference and empirical analyses,a formula is proposed as E_s=[max(D_q)-min(D_q)]/d to measure geo-space-use efficiency.In practice,the urban and rural area can be compartmentalized using the idea from multifractals. |
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| Keywords: | level of urbanization urban and rural population distribution multifractals spatial complexity |
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