文献类型：期刊文献

中文题名：荒漠珍稀灌木半日花种群的年龄结构与生命表分析

英文题名：The Age Structure and Life Table of Rare Eremophyte Helianthemum ordosicum Population

作者：李清河[1] 高婷婷[1] 刘建锋[1] 辛智鸣[2] 徐军[2]

第一作者：李清河

机构：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091;[2]中国林业科学研究院沙漠林业实验中心,磴口015200

年份：2009

卷号：29

期号：2

起止页码：176-181

中文期刊名：植物研究

外文期刊名：Bulletin of Botanical Research

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：中央级公益性科研院所基本科研业务费专项资金(200710);国家林业局948项目(2006-4-02);科技支撑计划专题(2006BAD26B0801)

语种：中文

中文关键词：半日花;年龄结构;生命表;生存分析

外文关键词：Helianthemum ordosicum ; age structure ; life table ; survival analysis

分类号：Q145.1;Q948.121

摘要：根据对不同坡位的半日花种群的调查资料,分析了其年龄结构,编制了静态生命表,分析了存活曲线和死亡率曲线、损失度曲线,并利用生存分析理论进行了函数分析。结果表明:不同坡位的半日花种群存在下降趋势。幼龄级和老龄级个体少,中龄级个体多。不同坡位的半日花种群密度存在差异,坡上部种群密度最大,坡下部最小,坡中部居中。不同坡位半日花种群在Ⅰ龄级时期望寿命达到最大,并在Ⅶ、Ⅷ龄级时期望寿命出现波动;不同坡位的半日花种群的存活曲线整体上趋于DeevyⅡ～Ⅲ型之间;在第Ⅵ～Ⅷ龄级半日花种群死亡率较高,且坡中部和坡下部种群死亡率峰值比坡上部种群滞后一个龄级。生存分析引入生命表中的4个函数能较好地说明不同坡位半日花种群的结构和动态变化。
Based on the surveyed data of Helianthemum ordosicum population in different slope positions, the age structure, the static life table, survival curve and mortality curve and vanish rate curve ware analyzed. Additionally, the survival functions were also analyzed. The results indicated that age structure of H. ordosicum in different slope positions exists the trend of decline. The number of young-age individuals accounts a small proportion of total population, that of the middle-age occupies big proportion. The H. ordosicum population density dif- fer in different slope positions, with the characteristics of the biggest population density in upper slope position, less in middle slope position and least in lower slope position. The expectant life span of the first-age H. orclosicum population in different slope positions is maximum, and the fluctuation of expectant life span exists in fifth- age or sixth-age population. The survivorship curves of the H. ordosicum population in different slope positions belong to Deevy Ⅱ -Ⅲ type as a whole. One peak of the mortality rate exists from sixth-age to eighth-age, that on the middle and lower slope position is one age class later than that on the upper slope position. These four function values from the survival analysis could be well used to analyze the structure and dynamic change of H. ordosicum population in different slope positions.