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| 长白山山杨种群的性比格局及其空间分布 | |
| 引用本文： | 潘春芳,赵秀海,夏富才,张春雨,吴蕾,周海成,林凤友. 长白山山杨种群的性比格局及其空间分布[J]. 生态学报, 2011, 31(2): 297-305 |
| 作者姓名： | 潘春芳 赵秀海 夏富才 张春雨 吴蕾 周海成 林凤友 |
| 作者单位： | 1. 北京林业大学省部共建森林培育与保护教育部重点实验室,北京,100083 2. 北京林业大学省部共建森林培育与保护教育部重点实验室,北京,100083;北华大学林学院,吉林市,132013 3. 长白山保护管理中心保护处,延边,133613 4. 中国科学院长白山森林生态系统定位研究站,延边,133613 |
| 基金项目： | 财政部林业公益性行业科研专项项目(200904022, 20100400204) |
| 摘 要： | 以 5.2 hm2固定监测样地内山杨雌、雄植株的长期定位观测数据为基础,分析了长白山次生杨桦林内山杨(Populus davidiana)种群的性比格局、空间分布及其与环境因子间的关系。结果表明:山杨雌树和雄树的胸径大小差异不显著,始花大小相近,雄树的生长速率大于雌树,成熟个体的性比不显著偏离1 ∶ 1。山杨同性植株趋于相邻,雌雄植株的空间分离不显著;O-ring单变量点格局分析显示山杨在空间上呈异质性泊松分布。山杨同性别大树与小树在＜18m尺度上呈空间正相关;不同性别之间空间独立,说明性别之间的资源竞争不激烈。山杨雌树和雄树的空间分布与林分密度极显著正相关,林分密度对山杨雌雄植株空间分布变异的解释量较小,空间变量对雌树分布的解释量较大。 |
| 关 键 词： | 雌雄异株 性比格局 空间分布 空间相关性 方差分解 山杨 |
| 收稿时间： | 2009-12-08 |
| 修稿时间： | 2010-04-20 |
Sex ratio and spatial pattern in Populus davidiana in Changbai Mountain |
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| PAN Chunfang,ZHAO Xiuhai,XIA Fucai,ZHANG Chunyu,WU Lei,ZHOU Haicheng and LIN Fengyou. Sex ratio and spatial pattern in Populus davidiana in Changbai Mountain[J]. Acta Ecologica Sinica, 2011, 31(2): 297-305 | |
| Authors: | PAN Chunfang ZHAO Xiuhai XIA Fucai ZHANG Chunyu WU Lei ZHOU Haicheng LIN Fengyou |
| Affiliation: | Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University,Beijing 100083, China;Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University,Beijing 100083, China;Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University,Beijing 100083, China; Forestry College of Beihua University, Jilin 132013, China;Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University,Beijing 100083, China;Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University,Beijing 100083, China;Protection Section of Protection and Management Center of Changbai Mountain, Yanbian 133613, China;China Research Station of Changbai Mountain Forest Ecosystems, Chinese Academy of Sciences, Yanbian 133613, China |
| Abstract: | |
| Keywords: | dioecious sex ratio spatial pattern spatial correlation variation partitioning poplar |
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