小陇山林区秦岭冷杉生命表分析  

Analysis on Life Table of Abies chensiensis in Xiaolongshan Forest Area

作　　者：马建伟 张宋智 李安民 胡卫兵 杜彦昌 郭小龙 

机构地区：[1]甘肃小陇山林业科学研究所,甘肃天水741022

出　　处：《甘肃林业科技》2008年第1期1-3,8,共4页Journal of Gansu Forestry Science and Technology

基　　金：国家林业局林木培育实验室基金项目<甘肃小陇山植被类型调查及多样性研究>(2006年);甘肃省天水市科技攻关项目<小陇山林区珍稀濒危树种保护与繁育技术研究>(2005-13)

摘　　要：采用典型抽样,对秦岭西段小陇山林区天然秦岭冷杉群落进行调查,应用"空间代替时间"的方法编制秦岭冷杉种群的生命表,结果表明,秦岭冷杉种群在发育和演替过程中,存在2个死亡高峰,即由种子转化为幼树阶段出现第1个高峰,成年期出现第2个高峰,14龄级时大多数个体死亡。同时认为,秦岭冷杉天然更新困难,种群发育不良。The invstigation was conducted on natural communities of Abies chensiensis in Xiaolongshan forest area of west section of Qinling, and the life table of communities was compiled using the method of spatial sequence instead of time successional sequence. The result indicated that Abies chensiensis had two deaths peak during its development and succession. That is： One is the stage of seed conversation into young seedling, and the other is adult stage, and most of them died at the age of 14. It is regarded that Abies chen.sien.sis had poor development and difficulties in natural regeneration.

关 键 词：秦岭冷杉 生命表 群落特征 小陇山林区 

分 类 号：S791.14[农业科学—林木遗传育种]