小陇山林区濒危植物领春木种群生命表分析  

Analysis on Life Table of Euptela pleiospermum in Xiaolongshan Forest Area

作　　者：杜彦昌 马建伟 李安明 胡卫兵 郭小龙 

机构地区：[1]甘肃省小陇山林业科学研究所,甘肃天水741022

出　　处：《甘肃林业科技》2007年第4期9-12,22,共5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：用相邻格子法对小陇山林区领春木种群进行野外调查,采用静态生命表、存活曲线、死亡率曲线等方法对不同生境的领春木种群结构与动态进行了分析。结果表明:领春木种群的年龄结构成正金字塔形,种群处于增长型;从整体上看,领春木种群的存活曲线应属于DeeveyⅡ型;种群存在2个死亡率高峰,一是在幼苗向幼树转化阶段,二是在成年阶段;由于长期的自然竞争,到14龄级时大多已死亡,总亏损度最大。Applying the method of static life table, survival curve and rate of death curve. A field investigation was conducted to analyze population structure and dynamics of Euptela pleiospermum in different habitat of Xiaolongshan forest area. The results showed that the age structure of population presented pyramdical and growth pattern. In general, the survival curse was Deevey Ⅱ pattern; Euptela pleiospermum had two deaths peak. One is the stage of young sip conversation into young tree and the other is adult stage. Most of them died at the age of 14 and total losses was largest.

关 键 词：领春木 种群生命表 濒危植物 

分 类 号：S718.5[农业科学—林学] S711