【摘要】 利用构造Lyapunov函数的方法,给出了具有随机扰动的广义"食物有限"种群模型正解的θ阶矩和(θ+1)阶矩的全局吸引性条件.结果表明,环境白噪声的存在并未影响原确定性种群模型已有的结果.更多还原

【Abstract】 By constructing Lyapunov function method,the sufficient conditions of the global attractivity in the θth moment and the(θ+1)th moment of positive solutions to the general "food-limited" species model with random perturbation are given.The results show that the presence of such a noise doesn’t affect the results that we have obtained with the original determinate species model.更多还原