| 湖北七姊妹山珙桐种群结构研究 |
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| 引用本文： | 马宇飞,李俊清.湖北七姊妹山珙桐种群结构研究[J].北京林业大学学报,2005,27(3):12-16. |
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| 作者姓名： | 马宇飞 李俊清 |
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| 作者单位： | 1.1 中国科学院沈阳应用生态研究所大青沟沙地生态实验站 2 中国科学院研究生院 |
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| 摘 要： | 为了解珙桐的种群结构和更新情况,作者于2002年8月31日—9月7日在湖北七姊妹山按照海拔梯度,设置了4块样地, 用样方法对珙桐种群进行了调查.分析了珙桐的径级结构、高度结构,编制了静态生命表;绘制了存活曲线和死亡曲线;并探讨了珙桐的更新,从不同角度研究了珙桐种群的动态变化规律.结果表明，该种群前期生长不稳定，达到成熟后的种群数量保持平衡.珙桐种群缺乏有性繁殖产生的幼树，其更新是有性繁殖和无性繁殖互为补充.
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| 关 键 词： | 珙桐 径级结构 生命表 存活曲线 更新 |
| 文章编号： | 1000-1522(2005)03-0012-05 |
| 收稿时间： | 1900-01-01 |
Population structure of Davidia involucrate in Mt. Seven-sister Nature Reserve of central China's Hubei Province |
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| MA Yu-fei,LI Jun-qing.Population structure of Davidia involucrate in Mt. Seven-sister Nature Reserve of central China''''s Hubei Province[J].Journal of Beijing Forestry University,2005,27(3):12-16. |
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| Authors: | MA Yu-fei LI Jun-qing |
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| Institution: | College of Resources and Environment, Beijng Forestry University, 100083,P.R.China. |
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| Abstract: | In order to study the structure and generation of Davidia involucrate populations,the authors set up 4 stands according to altitude differences between August 31 and September 7 in 2002 The D. involucrate populations were investigated by sampling methods. The population structure both in stem size and in height were analyzed, and lifes tables, and survival and death curves were made. Finally, the regeneration of \%D. involucrate\% population was discussed. The results showed that the population was stable in the large size classes and variable in the smaller ones. The population lacked seedlings from sexual reproduction. The regeneration model of D. involucrate was sexual and asexual reproductions. |
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| Keywords: | Davidia involucrate size-class life table survival curve regeneration |
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