Cellular automata(CA) have become important methods as a kind of modeling experiment tools for geographical researches,and will probably be,as M.Batty pointed out,a paradigm for the 21st century.

• 细胞自动机(CA)现已成为城市地理研究的重要模拟实验工具,有人甚至认为它是21世纪的新的范型。