城市规划CA模型在城市空间形态演化中的应用研究

传统的CA模型基于自下而上的思路模拟城市复杂系统,忽略了宏观决策对城市空间形态演化的影响。本文基于传统CA模型,从城市规划角度,通过引入控制性详细规划层,把整个城市空间划分成不同组团片区,将传统的自下而上CA模型改进为自下而上和自上而下相结合的城市规划CA模型(UPCA),并取得了较好的实证模拟结果。结果表明:该模型简化了传统CA城市模拟模型的数据量,提高了模型的模拟精度,并增强了模型的规划决策功能,使模型具备了一定的社会经济分析能力。

The research of urban planning CA model in urban morphology evolution

The traditional CA model simulates the complex city system based on the from-bottom-to-to Pthinking,and has neglected the influence of the macroscopic decision-making to the evolution of the Urban Morphology.Based on traditional CA model,and from the point of urban planning,the entire urban space is divided into different pieces of areas by the introduction of controllable detailed planning layer.Meanwhile,the traditional CA model is improved to a combination of two models:the from-bottom-to-to Purban planning CA model and the from-top-to-bottom one.The results indicates that this model simplifies the data quantity of traditional CA city simulation model,increases the model simulation precision,and strengthenes the model's plan decision-making function,and enables the model to have the certain social economy analysis ability.