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城乡人口地域分异特征的多分形刻画 被引量:1

Multifractal Characterization of the Distribution Pattern of the Urban and Rural Population
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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. A series of multifractals models are made based on the assumption that urban and nural population distribution conforms to a rule of cascade structure, The models can to characterize the distribution pattern of spatial dynamics of urbanization. Taking USA and PRC as examples, muhifractals spectra are estimated using levels of urbanization. According to both the theoretical inference and empirical analyses, a formula is proposed as Ei = [max(Dq)-min(Dq) ]/d to measure geo-space-use efficiency. In practice, the urban and rural arusing the idea from multifractals.
出处 《信阳师范学院学报(自然科学版)》 CAS 北大核心 2006年第1期42-46,共5页 Journal of Xinyang Normal University(Natural Science Edition)
基金 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)
关键词 城市化水平 城乡人口分布 多分形 空间复杂性 level of urbanization urban and rural population distribution muhifractals spatial complexity
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