基于GIS的人口信息提取

Population data abstraction based on GIS

为准确提取区域人口信息,在传统的面积内插方法的基础上提出了基于人口真实分布的面积内插方法。该方法把研究区域分为人口居住区(均匀分布)和非居住区(分布为零),得到的人口分布和传统方法相比,前者更接近于人口的真实分布。用人口密度的递归算法,估计出稀疏地区的人口密度,求出密集地区的人口密度;再把密集区分为新的人口稀疏区和密集区,此过程反复直至求出接近于人口真实分布的人口模型。该方法简便可行,适合模拟城乡结合部的人口分布。

An area-based interpolation method was developed to model population distributions. The method partitions the zone into “occupied” and “unoccupied” zones with the population well-distributed in the occupied regions and with zero population in the unoccupied regions. The population distribution model gives better population distribution results than previous methods. The population density algorithm was developed. The population density of the more densely populated region is based on estimates of the population density of the sparsely populated region. The more densely populated region is then again subdivided into sparsely and densely populated regions until the real population distribution is obtained. The method can be used to simulate population distributions between urban and rural areas.