| 空间结构下性比率的稳定机制研究 |
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| 引用本文： | 戴华炜,蒋晓艳.空间结构下性比率的稳定机制研究[J].湖北师范学院学报(自然科学版),2014(3):51-54. |
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| 作者姓名： | 戴华炜 蒋晓艳 |
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| 作者单位： | 惠州学院数学系 |
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| 摘 要： | 分别利用基于个体的斑块占据模型（ IBM）和偶对近似方法（ PA）构造了一个空间结构下的两性集合种群模型，通过计算机仿真和数值模拟，研究了空间结构对性比率的稳定性的影响。结果表明：空间结构下由于Allee 效应的强作用，两性种群只有性比率维持稳定在1∶1附近时种群才能够续存；偶对近似方法可以很好的反映出元胞自动机的研究结果，这对进一步研究空间结构下两性集合种群的时空动态提供了有效的理论工具。
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| 关 键 词： | 进化维持策略( EMS) 偶对近似方法 Allee效应 |
Research on stable mechanism of sex ratio in spatial structure |
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| DAI Hua-wei;JIANG Xiao-yan.Research on stable mechanism of sex ratio in spatial structure[J].Journal of Hubei Normal University(Natural Science),2014(3):51-54. |
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| Authors: | DAI Hua-wei;JIANG Xiao-yan |
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| Institution: | DAI Hua-wei;JIANG Xiao-yan;Department of Mathematics,Huizhou University; |
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| Abstract: | In this paper, Individual Based method （IBM） and Pair-approximation model are respectively used to construct a spatial structure of gender metapopulation model .Computer simulation and numerical simulation are used to study the effect of spatial structure upon the stability of sex ratio .The results show that the populations can survive just when sex ratio remain near in 1：1 due to the strong role Allee effect in spatial structure .Besides, the PA model can well reflect the result of comput-er simulation, which provide effective theoretical methods for further research on the spatial -temporal dynamics of gender metapopulation . |
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| Keywords: | IBM IBM pair-approximation allee effect |
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