leslie模型可以利用某一初始时刻种群的年龄结构现状,动态地预测种群年龄结构及数量随时间的演变过程。相比马尔萨斯的人口模型和Logistic 模型，leslie模型可以长期预测种群结构。(The Leslie model can predict the populative structure and number of the population with time by using the　initial age structure of the population. Compared to Malthus's population model and the Logistic model, the Leslie model have　advantage in making long-run forecast of population structure.)