Alternative Attractors and Regime Shift in a Stochastic Logistic Model
There will be different stable states or attractors in ecosystem under the same external conditions. In this paper, one stochastic logistic model under external fluctuations was established. The existence of the alternative attractors and regime shift are investigated. Also, the mean first passage time is studied using stochastic dynamics theory. Results showed that there are different stable attractors under a parameter region of maximum rate of grazing. The noise intensity can directly lead to regime shifts of the system. In addition, with the increasing of the noise intensity, the mean first passage time of the system decreased.
Jianfeng Feng Lin Zhu Weiqing Meng Hongli Wang
Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science a College of City and Environment, Tianjin Normal University, Tianjin, China Department of Mechanics, Tianjin University, China
国际会议
2010国际混沌、分形理论与应用研讨会(IWCFTA 2010)
昆明
英文
247-250
2010-10-29（万方平台首次上网日期，不代表论文的发表时间）