中文摘要：

以种群生命表和生存分析为基础,采用空间代时间法和匀滑技术,编制了福建茫荡山小叶青冈种群静态生命表,绘制死亡率曲线、生存分布函数曲线、存活曲线,分析种群数量动态变化。结果表明：小叶青冈种群结构存在波动性,其存活曲线趋于DeeveyⅢ型,幼年阶段个体较为丰富;种群有3个死亡最高峰,分别出现在Ⅰ、Ⅴ、Ⅷ龄级;生存分析表明,小叶青冈种群的生存率单调下降,积累死亡率单调上升;从Ⅴ龄级开始,种群生存率曲线和积累死亡率曲线的变化开始趋于平缓,但种群生存率不足1%,积累死亡率大于99%;4个生存函数曲线表明,小叶青冈具有前期相对稳定,中期锐减,末期衰退的特点。

英文摘要：

Based on the population life table and survival analysis, and by using the age class structure represented by DBH class and smooth technology, the Life table of Cyclobalanopsis gracilis natural population in Mangdang mountains was compiled, and the mortality rate curve, survival rate curve and survival function curve were analyzed to reflect the dynamic changes of Cyclobalanopsis gracilis population. The results showed that there was a fluctuation in the structure of Cyclobalanopsis gracilis population, the survival curve appeared to Deevey Ⅲ type, and the individual at young stage were abundant. There was three deaths peak in Ⅰ, Ⅴ and Ⅷ age level. Survival analysis showed that the population mortality rate was increasing all along, while the survival rate was decreasing all the time. The change of survival rate curve and accumulated mortality curve begins to gently after Ⅴ age level, but the survival rate was less than 1% and the mortality was greater than 99%. The four survival function curve showed that the Cyclobalanopsis gracilis population was relatively stable in early age period and decreased rapidly in middle age period,then declined in old age period.