DLA和DBM模型与城市生长的分形模拟——关于城市分形形态模拟方法的一个理论探讨

DBM & DLA model and fractal simulation of urban growth:A theoretical studies of methods of simulatin

摘要: 国外学者先后将 DLA模型和 DBM模型引入城市地理学领域用以模拟城市生长的分形形态 ,并认为在城市扩展模拟方面 DBM较之 DLA模型更为优越 .本文经过对比分析和理论探讨认为 ,DLA作为 CA模型的特别形式适于一般城市分形形态的模拟 ,而 DBM则更适合于模拟交通网络 .由于城市生长是用地扩展和交通渗透的双重互动过程 ,在应用中最好通过综合集成技术将 DLA和 DBM联结起来 ,据之模拟现实城市的分形生长与形态

Abstract: After introducing the model of diffusion limited aggregation (DLA)into urban geographic field,Batty et al (1990)made use of the dielectric breakdown model(DBM)to simulate urban forms from diffusive growth,and they think that the DBM model is superior to the DLA model as far as city simulation is concerned.However,we have a different opinion.Our point of view is that the DBM model should be used to simulate transport networks rather than urban form,and the DLA model has more advantages in simulating city for...