摘要
分析了一类稀疏效应下第Ⅱ类功能反应捕食系统的拓扑结构随捕食种群死亡率c的变化规律,提供系统关于生态稳定方面的一些有用信息.得出结论:当0<c<c1时,两种群必将同时灭绝;当c1<c<c3时,两种群有保持生态平衡的可能;当c3<c<+∞时,捕食种群必将灭绝,而食饵种群的数量必将稳定在k.
A change law of the topological structure of a class of functional response predator-prey system with scanty effect is discussed, when the death rate c of the predator of this system is changing monotonously. Then the useful information of the ecological balance of this system is provided. The conclusion is as follows: When 0〈 c〈 c1 ,then these two species must be extinct together; When c1〈 c 〈c3, then these two species may keep the ecological balance; When c3 〈 c 〈 +∞, then the predator species must be extinct, and the prey species must be stable at the number k.
出处
《大连海事大学学报》
CAS
CSCD
北大核心
2006年第1期103-106,共4页
Journal of Dalian Maritime University
关键词
拓扑结构
捕食系统
生态稳定
稀疏效应
功能反应
topological structure
predator-prey system
ecological balance
scanty effect
functional response