贵州特有植物贵州槭的种群结构及动态研究

贵州槭(Acerguizhouense)属常绿阔叶乔木，仅分布于贵州省黄平县新州镇海拔770~1000m有山峰屏障的常绿阔叶落叶混交林中，颇具科研和经济价值，研究其种群结构特征和数量动态变化对于探索特有植物保护生物学具有重要意义。该研究对贵州槭疑似分布区开展普查，并在密集分布区设置样地进行详查，分析其种群结构与数量动态的变化规律。结果表明：（1)贵州槭的自然分布区极为狭窄，雷坪分布区约0.3km2，总计约2600株，其中密集分布区0.03km2，平均种群密度78800株/km2，稀疏分布区0.27km2，平均种群密度矣1500株/km2;在东坡村飞云崖风景区有约0.05km2的稀疏分布，且在雷...

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Bibliographic Details
Published in广西植物 Vol. 36; no. 5; pp. 548 - 556
Main Author 刘海燕;邹天才;杨乃坤;黄丽华;汪建文
Format Journal Article
LanguageChinese
Published 贵州省植物园,贵阳,550004%贵阳中雄林业生态工程勘察设计有限公司,贵阳,550004%贵州科学院,贵阳,550001 2016
Subjects
贵州槭,种群结构,静态时间生命表,数量动态,特有分布
Acer guizhouense
数量动态
population structure
time-specific life table
quantity dynamics
种群结构
贵州槭
特有分布
静态时间生命表
endemic distribution
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ISSN1000-3142
DOI10.11931/guihaia.gxzw201512006

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Summary:贵州槭(Acerguizhouense)属常绿阔叶乔木，仅分布于贵州省黄平县新州镇海拔770~1000m有山峰屏障的常绿阔叶落叶混交林中，颇具科研和经济价值，研究其种群结构特征和数量动态变化对于探索特有植物保护生物学具有重要意义。该研究对贵州槭疑似分布区开展普查，并在密集分布区设置样地进行详查，分析其种群结构与数量动态的变化规律。结果表明：（1)贵州槭的自然分布区极为狭窄，雷坪分布区约0.3km2，总计约2600株，其中密集分布区0.03km2，平均种群密度78800株/km2，稀疏分布区0.27km2，平均种群密度矣1500株/km2;在东坡村飞云崖风景区有约0.05km2的稀疏分布，且在雷坪至东坡两分布区之间没有发现自然分布;采用SAFE指数和1LCN的标准评价，贵州槭属于濒危物种（EN)。（2)贵州槭幼树占种群的比重达63.23%,种群密度大小为幼树>中龄树>成年树，种群结构为增长型;种群死亡率曲线和消失率曲线分别在I龄期和K龄期出现2个高峰，在m-W龄期间和X-M龄期间出现2个低谷，种群存活曲线趋于Ueevey-m型特征；（3)人为采伐和生境遭破坏造成的植株死亡或者丧失增加是导致贵州槭种群数量稀少的主要原因，在加强就地保护的同时，开展人工育苗迁地应用栽培是现实而有效的合理保护措施。
Bibliography:45-1134/Q
Acer guizhouense is a kind of evergreen broad-leaved tree with scientific and economic value, which only dis?tributed at 770-1 000 m in evergreen and deciduous broad-leaved mixed forest with mountain barrier in Xinzhou Town of Huangping C(mnty in Guizh(m Province. So, it has significant value to explore conservation biology of endemic plants by studying its population structure and dynamic change. We took general survey in suspected distribution area, set up plots in dense area for full investigation, and analyzed the population structure and quantity dynamics pattern. The results were as follows: (1) The natural distribution region of A. guizhouense was very narrow, covered about 0.3 km2 in Leiping with a total of 2 600 trees. The dense area was 0.03 km2,average population density 78 800 trees/km2. The sporadic distribution was 0.27 km", average population density ^ 1 500 tree^/km". The species occasionally distributed in about 0.05 km" Feiyunya of Dongpo Village. But there was no nat
ISSN:1000-3142
DOI:10.11931/guihaia.gxzw201512006