生态扩散系统全局渐近稳定的条件

本文研究一类带扩散的非自治捕食系统,该系统由ｎ个斑块组成,食饵种群可以在ｎ个斑块之间扩散,而捕食者种群限定在一个斑块不能扩散．得到系统持续生存和全局渐近稳定的条件．     

具有阶段结构和时滞的捕食系统

§ 1　IntroductionThe competitive,cooperative and predator-prey models have been studied by many au-thors.[1— 4] The permanence (or strong persistence) and extinction are significant conceptsof those models.However,the stage structure of species has been considered very little.Inthe real world,almost all animals have the stage structure of immature and mature.Re-cently,papers[5— 7] studied the stage structure of species,the transformation rate of ma-ture population is proportional to the ex…