贵州野生山桐子种群年龄结构及其动态特性  

Study on Age Structure and Its Dynamic Characteristics of Wild Idesia polycarpa Population in Guizhou Province

作　　者：谢双喜[1] 吴志文[1] 

机构地区：[1]贵州大学林学院,贵州贵阳550025

出　　处：《西南林业大学学报（自然科学）》2012年第3期21-25,共5页Journal of Southwest Forestry University：Natural Sciences

基　　金：贵州省农业科技攻关项目(黔科合NY字(2009)3049)资助

摘　　要：用径级代替年龄级的方法,对山桐子自然种群结构、生命表和生存函数进行研究。结果表明,山桐子的自然种群结构大体呈"金字塔"形,在天然群落中,山桐子从幼苗期到幼树期要经过以光照为主导的环境筛的选择。种群动态量化分析发现,山桐子种群结构虽然有波动,但仍然为一个增长型的种群,其种群呈现大周期内有小周期的多谐波迭加的数量波动特征,其存活曲线趋于Deevey-Ⅲ型曲线。Based on the method of ＂replacing the age class by DBH class＂, the population structure, life table and survival function for ldesia polycarpa were analyzed. The results showed that the natural population structure of L polycarpa was roughly presented as pyramidal shape. The plants were selected from the seedling stage to the ju- venile stage under the natural conditions by the environment sieve with light as the leading factor. The quantitative analysis on the population dynamics showed that the I. polycarpa population was still an increasing type structure although with some fluctuation. Its population presented the quantitative fluctuation characteristics with multiple small cycles overlapped in the large cycles, and its survival curve tended to be the Deevev - Ⅲ curve.

关 键 词：山桐子 年龄结构 种群特性 贵州省 

分 类 号：S718.54[农业科学—林学]