福州琅岐风景区景观林朴树种群生命表分析

Analysis on Life Table of Celtis sinesis Population in Langqi Scenic Spot

根据琅岐风景区朴树种群的调查材料，以种群生命表及生存分析理论为基础，通过“空间代时间”方法编制了其静态生命表，并绘制了生命过程种群密度变化的亏损率曲线、存活曲线、死亡率曲线、生存函数曲线，分析了朴树种群的动态变化趋势．结果表明，朴树种群存活曲线趋于Deevey-Ⅲ型，在其生命过程中存在2个死亡高峰，分别出现在Ⅱ，Ⅴ龄级的年龄阶段；生存分析引入生命表中的几个函数能较好地说明朴树种群的结构和动态变化．

Based on the data of Celtis sinesis population in Langqi Scenic Spot and the life table of population and the theory of survival analysis, the static life table of Celtis sinesis Population was worked out through ＂space take the place of time＂ method, and the curves of lose rate, survival, mortality rate, and survival function of the density change of the life course of population were made for static life table to analyze the population dynamics. The results showed that the population had two peaks of mortality at Ⅱ , Ⅴage stage, and the survival curve of the population trended to the type Ⅲ of Deevey. The functions used in static life table could well explain the structure and dynamics of Celtis sinesis population.