| 鼎湖山南亚热带常绿阔叶林20公顷样地幼苗的分布 |
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| 引用本文： | 宾粤,叶万辉,曹洪麟,黄忠良,练琚愉.鼎湖山南亚热带常绿阔叶林20公顷样地幼苗的分布[J].生物多样性,2011,19(2). |
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| 作者姓名： | 宾粤 叶万辉 曹洪麟 黄忠良 练琚愉 |
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| 作者单位： | 1. 中国科学院华南植物园植物资源保育和持续利用重点实验室,广州,510650;中国科学院研究生院,北京,100049
2. 中国科学院华南植物园植物资源保育和持续利用重点实验室,广州,510650 |
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| 基金项目： | 国家科技支撑计划，中国科学院知识创新工程重要方向项目，"十一五"国家科技支撑计划 |
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| 摘 要： | 为了解鼎湖山常绿阔叶林树木幼苗的组成、分布及高度结构,在鼎湖山20 ha动态监测样地(简称DHS)内布置了149个种子雨收集器,并在周围设置了幼苗小样方.2008年31月完成了幼苗调查,共调查到2,632株.采用多元线性回归方法分析了9个树种幼苗多度与6个变鼍之间的关系.这6个变量包括种子雨收集器10 m内DBH≥1 cm同种个体的个体数、胸高断面积之和,以及地形的凹凸度、坡度、坡向和海拔.结果表明影响幼苗多度的因素随树种不同而不同.其中3个树种的幼苗多度只与地形变量有关,4个树种幼陌多度同时受到地形和同种个体多度的影响,1个树种的幼苗多度只与同种个体有关,1个树种幼苗多度与所有变量的关系都不显著.除谷木(Memecylon ligustrifolium)外,10 m范围内同种个体的多度和胸高断面积的偏回归系数一旦显著皆为正值,即幼苗多度随同种个体数或同种胸高断面积增大而增大.本研究为扩散限制和生态位理论提供了间接的证据.
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| 关 键 词： | 幼苗 鼎湖山样地 扩散限制 生态位 |
Seedling distribution in a subtropical evergreen broad-leaved forest plot in the Dinghu Mountain |
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| Yue Bin,Wanhui Ye,Honglin Cao,Zhongliang Huang,Juyu Lian.Seedling distribution in a subtropical evergreen broad-leaved forest plot in the Dinghu Mountain[J].Biodiversity Science,2011,19(2). |
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| Authors: | Yue Bin Wanhui Ye Honglin Cao Zhongliang Huang Juyu Lian |
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| Affiliation: | Yue Bin1,2,Wanhui Ye1,Honglin Cao1,Zhongliang Huang1,Juyu Lian1 1 Key Laboratory of Plant Resources Conservation and Sustainable Utilization,South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650 2 Graduate University of the Chinese Academy of Sciences,Beijing 100049 |
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| Abstract: | To explore the composition, distribution, and height structure of tree seedlings in an evergreen broad-leaved forest in the Dinghu Mountain, 149 seed traps were set up, surrounded by seedling plots, in a 20-ha dynamic plot. Seedling plots were censused in March, 2008 and a total of 2,632 seedlings were recorded. Multiple linear regression was used to analyze the relationship between the abundance of seedlings for nine species and six variables, including the number of conspecifics within 10 m away from a se... |
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| Keywords: | seedlings DHS plot dispersal limitation niche |
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