基于遥感的城乡人口分布模拟——以松原市为例

Simulating Urban-rural Population Distribution Based Remote Sensing:Taking Songyuan City As a Case Study

利用遥感数据模拟基于居民地的人口空间分布,须解决两大难题:①居民地类型、面积、位置的精确获取;②居民地类型、面积与人口数量间的关系。本文根据地理意义和数学意义,对经典的城市人口-面积异速生长模型进行扩展,推导出城乡人口-面积统一模型。进而以松原市为例,以1∶5万地形图为辅助数据,建立居民地分类体系,利用ETM影像提取居民地信息,在以上模型的基础上采用“城乡人口分割”算法模拟城乡人口的空间分布。本研究方法可为中尺度人口分布的理论与应用研究借鉴。

There are two main problems for simulating distribution of population using RS data： （1）how to obtain information of residential type, area and position; （2）what relation between residential type, area and position and amount of population. Basing on geographical sense and mathematical sense, this paper extends the model of allometric growth of urban population-area study, works out model of rural and urban population-area. Then, taking Songyuan city as a case, using 1：50000 relief map as assistant data, building up classification system of residential points, using the method of ＂ detaching urban-rural population＂ based on above the models, this paper uses ETM images to extract information of residential area and simulates population distribution in the urban and rural region. The method used in this paper can be referenced by the theoretic and applied researches for middle-scale population distribution.