关键词: 遗传算法, L-系统, 进化模拟, 三维

Abstract: With the development of virtual natural scenery，a lot of plant growth models have been reported.However，most of them are based on computer graphics to portray the objects’ shape at a certain time.Enlightened by Darwin’s evolution theory，it uses the idea of natural selection and evolution mechanism，focus on the species of plants and the process of evolution，and realizes the simulation about the plants evolution.This paper puts forward a model based on genetic algorithm and L-system to simulate the plant evolution.This model will be useful in virtual reality and botany research.

Key words: genetic algorithm, L-system, evolution simulation, 3D