文献类型：期刊文献

中文题名：云南红豆杉种群结构与生命表分析

英文题名：Population Structure and Life Table of the Endangered Population of Taxus yunnanensis

作者：苏建荣[1] 张志钧[1] 邓疆[1] 陈智勇[1]

第一作者：苏建荣

机构：[1]中国林业科学研究院资源昆虫研究所

年份：2005

卷号：18

期号：6

起止页码：651-656

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：科技部科研院所公益研究专项项目"濒危植物云南红豆杉的资源及保护技术研究"(2004DIBJ104)科技部政府间国际合作项目"长江上游生态系统管理"(2002DFG00017)的部分研究内容

语种：中文

中文关键词：云南红豆杉;种群;结构;生命表;生存分析

外文关键词：Taxus yunnanensis ; population ; age and size class structure; life table; survival analysis

分类号：S791.49

摘要：根据14块总面积为5600 m2样地的实地调查资料,分析了云南红豆杉种群的年龄结构、大小级结构,编制了该种 群的特定时间生命表,绘制了存活曲线、死亡率曲线和消失率曲线,并用4个生存函数进行种群的生存分析。结果表 明:云南红豆杉的种群数量少,种群发育过程中具波动性,但仍属稳定型种群。云南红豆杉的年龄结构与大小级结构 差异较大,不宜以大小级结构替代龄级结构。云南红豆杉的存活曲线属于Deevey-Ⅲ曲线,该种群的死亡率曲线与消失 率曲线变化趋势基本一致,均在龄级为110-130 a和220-250 a阶段出现第一和第二峰值。生存空间与养分竞争 可能是产生最大第一峰值的主要原因。4个生存函数曲线表明:云南红豆杉种群具有前期稳定、中期锐减、后期衰退的 特点。云南红豆杉种群在160-190 a龄级后进入生理衰老阶段,生存率小于5％,累计死亡率大于95％。
Taxus yunnanensis Cheng et L. is an endangered haven＇t comprehensive investigations on its population. In evergreen conifer and important protected plant of China. There this paper, 14 plots with 5 600 m^2 were investigated, and field data were obtained. The age and structure of the population was analyzed. The time-specific life table, the curves of survivorship, mortality rate, hazard and the four survival function of the population were drawn. The results showed that the numbers of the Taxus yunnanensis population was is very limited, and had an obvious period fluctuation companying the growth of the population. It was convinced that the age structure analysis was much more reasonable than the size class method used widely at present. Its survival curve could be described by Deevey-Ⅲ. The mortality ratio curve showed the similar dynamics to hazard curve. The population had 2 distinct peaks of mortality, 100 a to 130 a and 230 a to 250 a, respectively. The first peak was due to serve environment. Generally, the population grew up stable in the early age, and then went into the middle age which the number of population decreased very quickly, followed by a decline old age. Its mortality rate will exceed 95% and survival rate will decrease to below 5% after 160 a - 190 a.