| 群落种群在竞争优势排序下的长期动态 |
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| 引用本文： | 胡彦霞,穆淑梅,郝敦元.群落种群在竞争优势排序下的长期动态[J].内蒙古大学学报(自然科学版),2002,33(3):247-252. |
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| 作者姓名： | 胡彦霞 穆淑梅 郝敦元 |
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| 作者单位： | 1. 内蒙古大学数学系,内蒙古,呼和浩特,010021
2. 内蒙古农业大学基础部,内蒙古,呼和浩特,010021 |
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| 基金项目： | 国家自然科学基金项目 3986 0 0 2 0 ,39730 1 0 0资助 |
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| 摘 要： | 以数学模型为工具研究了草原种群的拓殖率 c( colonization)和死亡率 m( mortality)都为常数时 ,存在竞争优势顺序的系统最终将趋于平衡态 ;当环境的随机扰动引发的种群拓殖率和死亡率的波动的绝对值充分小时 ,种群最终进入原平衡态的一个ε邻域内 .
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| 关 键 词： | 群落种群 非负平衡点 全局大范围吸引 |
| 文章编号： | 1000-1638(2002)03-0247-06 |
| 修稿时间： | 2001年9月25日 |
The Long Term Behaviour of Species of Plant Community under the Competitive Superior Order |
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| HU Yan xia ,MU Shu mei ,HAO Dun yuan.The Long Term Behaviour of Species of Plant Community under the Competitive Superior Order[J].Acta Scientiarum Naturalium Universitatis Neimongol,2002,33(3):247-252. |
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| Authors: | HU Yan xia MU Shu mei HAO Dun yuan |
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| Institution: | HU Yan xia 1,MU Shu mei 2,HAO Dun yuan 1 |
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| Abstract: | The evolution dynamics of species of grassland is studied according to mathematical model.It is shown that the system,in which the species have the competitive superior orders,will tend to the nonnegative equilibrium state when the colcnization and mortality of species are constants.The species will tend into the neighourhood of the nonnegative equilibrium state if the absolute value of the disturbance of colonization and mortality caused by the randomperturbation of environment are small enough. |
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| Keywords: | Species of plant community Nonnegative equilibrium point Globally asymptotically attractive |
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