人口密度模型与CA集成的城市化时空模拟实验

有机地集成城市经典模型与元胞自动机 (CA)是一种有意义的理论实验。本文分无约束和有约束两种条件构建了城市化CA模型 ,推导出了基于均质地理背景和孤立城市的假设的城市人口密度时空模型 ,并进行了二者集成的实验研究 ,得出了如下结论 :(1)CA是城市化时空模拟的有效方法 ;(2 )经典的地理、城市模型可以有效地集成到城市化CA模型中 ,起到控制城市化轨迹的基本作用 ,在某种程度上能够弥补CA建模过于简单的不足。

The experiment study on spatio-temporal simulation of urbanizing regions based on CA integrated with population density model

Spatio-temporal simulation of urbanizing regions is very complex. The paper has set up isolated urbanizing model based on CA with non-constraints andconstraints, has deduced urban population density spatio-temporal model based on homogeneous land and isolated city, and has made the experimental study on integration between urban population density model and CA. Therefore two conclusions have been drawn. The first is that cellular automata is an effective means to simulate urbanizing regions. The second is that some classical geographical and urban models can be integrated effectively with urban CA model, which can play a role in controlling urbanizing and in some sense can offset the shortcoming of CA model whose rule is simple.