| 甘肃省民勤连古城自然保护区绵刺种群的结构与动态研究 |
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| 引用本文： | 梁泰.甘肃省民勤连古城自然保护区绵刺种群的结构与动态研究[J].甘肃林业科技,2005,30(2):1-4,9. |
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| 作者姓名： | 梁泰 |
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| 作者单位： | 甘肃省治沙研究所,甘肃,武威,733000 |
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| 摘 要： | 民勤连古城自然保护区绵刺种群的结构与动态研究结果表明：绵刺种群在群落中地位和作用非常突出，其重要值为206．92，远远大于其他灌木物种，灌木层为群落的优势层片。绵刺具有2种典型的克隆生长构型：由劈根形成的密集性克隆生长构型和枝条下垂受损产生不定根形成的游击性克隆生长构型，这种特性在很大程度上影响了种群的分布格局、年龄结构和生命曲线。分布格局为集群分布。绵刺的年龄结构为下降型锥体，年龄越大，种群数量越多，但并不表示该种群为衰败种群，而为一个比较稳定的种群。生命曲线呈反对角线性上升，达到生理寿命前很少有个体死亡。
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| 关 键 词： | 民勤连古城自然保护区 绵刺 种群结构 种群动态 |
| 文章编号： | 1006-0960(2005)02-0001-04 |
Study on Population Structure and Dynamics of Potaninia mongolica in Minqin Lianguchen Nature Reserve |
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| LIANG Tai.Study on Population Structure and Dynamics of Potaninia mongolica in Minqin Lianguchen Nature Reserve[J].Journal of Gansu Forestry Science and Technology,2005,30(2):1-4,9. |
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| Authors: | LIANG Tai |
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| Abstract: | Study on population structure and dynamics of Potaninia mongolica in Minqin Lianguchen natural reserve showed that the status and function of Potaninia mongolica populations is very obvious, its important value(206.92)is bigger than that of subdominant shrubberies, shrubbery layer is dominant layer. Potaninia mongolica has two types of clone growth: the dense clone growth type from hacking root and shortstop clone growth type from dropping wattle, which have in most degree influences on distribution pattern, age structure and life curve of population. The distribution pattern of Potaninia mongolica population is clump. Its age structure is dropping cone, the bigger its age is, the more its quantity is, which shows that Potaninia mongolica population is steady population in steady of downfall population. Its life is against diagonal, there was little death before its natural life. |
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| Keywords: | Minqin Lianguchen Nature reserve Potaninia mongolica population structure population dynamics |
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