摘要: |
[目的]建立天敌胁迫下食饵种群动态模型的参数估计方法.[方法]利用灰色系统理论和灰色建模思想及差分等数学方法,对动态模型中的参数进行了估计.[结果]通过数学方法建立了动态模型参数的灰色估计法公式,解决了天敌肋迫下食饵种群动态模型的参数估计问题.[结论]通过对4个小麦品种蚜虫资料实例的参数估计,表明所建议的灰色参数估计法是有效的. |
关键词: 食饵种群 动态模型 参数估计 灰色估计法 |
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基金项目:国家自然科学基金项目(39970122;30470268) |
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Prey under nature enemy model parameter grey estimattion |
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Abstract: |
【Objective】 The paper gave the way to estimate parameter of the prey population dynamical model under natural enemy.【Method】 Grey theory and modeling idea or difference were taken to estimate parameter for dynamic model.【Result】 With mathematical analysis,a grey estimate formula was built for parameter of dynamic model,and solution to parameter estimation for prey population intimated by natural enemy was given.【Conclusion】 This parameter estimation for aphid of four characters shows that grey-estimation given in this paper is valid. |
Key words: prey population dynamic model parameter estimation grey-estimation method |