| 哈泥贫营养泥炭沼泽毛壁泥炭藓种群密度制约初探 |
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| 引用本文： | 孙强,卜兆君,王升忠,孟祥军.哈泥贫营养泥炭沼泽毛壁泥炭藓种群密度制约初探[J].湿地科学,2005,3(2):116-120. |
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| 作者姓名： | 孙强 卜兆君 王升忠 孟祥军 |
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| 作者单位： | 1. 吉林省环境监测中心站,吉林,长春,130011
2. 东北师范大学国家环保总局湿地保护与植被恢复重点实验室,吉林,长春,130024;东北师范大学吉林省生态恢复与生态系统管理重点实验室,吉林,长春,130024 |
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| 基金项目： | 国家自然科学基金重点项目(50139020)和东北师范大学青年基金资助项目(111373000). |
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| 摘 要： | 在哈泥贫营养沼泽,研究了毛壁泥炭藓(Sphagnumimbricatum)种群的密度制约规律,结果表明,种群出生率、死亡率和增长率均表现为负密度制约;随初始密度的增加,种群出生率和增长率下降,死亡率增加;分株高度和生物量及其分配无严格的密度制约规律。毛壁泥炭藓种群密度制约规律的特殊性与复杂性与其特殊的生物学特性有关。保水合作与光资源竞争的权衡是决定种群数量特征对密度变化响应的主要原因。
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| 关 键 词： | 毛壁泥炭藓 密度制约 光竞争 贫营养泥炭沼泽 |
| 文章编号： | 1672-5948(2005)02-116 |
| 修稿时间： | 2005年2月26日 |
Preliminary Study on Density Dependence of Sphagnum imbricatum Population in Hani Oligotrophic Mire |
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| Sun Qiang,Bu ZhaoJun,Wang ShengZhong,Meng Xiangjun.Preliminary Study on Density Dependence of Sphagnum imbricatum Population in Hani Oligotrophic Mire[J].Wetland Science,2005,3(2):116-120. |
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| Authors: | Sun Qiang Bu ZhaoJun Wang ShengZhong Meng Xiangjun |
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| Institution: | Sun Qiang 1,Bu Zhao-Jun 2,3,Wang Sheng-Zhong 2,3,Meng Xiang-Jun 2,3 |
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| Abstract: | Density dependence of Sphagnum imbricatum population in Hani oligotrophic mire, the biggest virgin oligotrophic mire in China, was studied in this paper. The results showed it presented density dependence on birth rate, death rate and increase rate of population. With increase of initial density, birth rate and increase rate of population decreased while death rate increased. There was no strict rule of density dependence on ramet height, biomass and its allocation. The speciality and complexity of density dependence of S. imbricatum population was related to its special biological characteristics. Trade-off between co-operation of water conservation and competition of light resources was the main reason for response of quantitative features of the population to density change. |
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| Keywords: | Sphagnum imbricatum density dependence light competition oligotrophic mire |
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