摘要
讨论植物种群具有常收获率的一类植物-食植者微分方程模型.分析了此系统当对植物种群的常收获率逐渐增大的过程中,在第一象限内轨线拓扑结构的变化规律,从而获知对植物种群不同程度的常收获率将对食植生态环境所产生影响的程度.
We studies a class of the plant-herbivore system, which the plant species possess a constant havest rate. And analyse the Chenge of the topological structure in the first quadrant of this system, when the constant havest rate of the plant species is Increase gradually. Then learn the level of affection of the ecological environment under the different constant havest rate of the plant specices.
出处
《生物数学学报》
CSCD
2000年第4期425-431,共7页
Journal of Biomathematics
基金
辽宁省教育厅高校科研项目!(A990311010)
关键词
食植微分模型
常收获率
拓扑结构
植物种群
Plant-herbivore system
Constant havest rate
Topological structure