摘要
对泰宁峨眉峰国家级自然保护区交让木种群结构和分布格局进行调查研究,结果表明:泰宁交让木种群个体数从幼苗到老龄树逐渐减少,种群结构为正金字塔型,属于增长型种群,种群个体主要集中分布在9m以下的垂直生长空间,为小乔木;在不同海拔区域上,交让木种群个体数主要集中生长于1300~1500m之间,种群个体分布格局为集聚分布;交让木种群生命期望值随着径级增加呈递减,种群存活曲线为典型的“Ⅱ型”成活曲线,交让木的特殊生长环境,在整个天然常绿落叶阔叶林,生长优势不明显。
Plpulation structure and distribution pattern of Daphniphyllum macropodum Miq.population in Taining Emeifeng Nature Reserve were studied.The results showed that:The population age structure of Daphniphyllum macropodum Miq.was gradually reduced,Its presentation was pyramid-shaped,a typical type of population growth,Its population of individuals were mainly distributed in vertical space of the community under 9m,belong small evergreen tree;On the elevation gradient,the 1300~1500m range gradient,the largest number of individuals of the population distribution,The population distribution patterns was cluster;The life expectancy of Daphniphyllum macropodum Miq.had a gradually declining trend with the increasing of diameter class,the population survival curve for“Ⅱtype”,during natural evergreen broad leaved forest,Growth superiority of Daphniphyllum macropodum Miq.Outstanding because of its special growth environment.
作者
林移车
Lin Yiche(Taining Forestry Bureau,Taining 354400,Fujian)
出处
《华东森林经理》
2019年第3期8-11,共4页
East China Forest Management
基金
福建省林业厅科技项目(闽林科便函〔2018〕26号)
关键词
交让木
种群特征
分布格局
泰宁
Daphniphyllum macropodumMiq.
population characteristic
distribution pattern
taining
