圆果化香叶构件种群动态生命表  

Dynamic Life Table of Leaf Population of Platycarya longipes

作　　者：唐丽霞[1] 喻理飞[1] 

机构地区：[1]贵州大学喀斯特森林生态研究中心,贵州贵阳550025

出　　处：《贵州农业科学》2009年第9期169-173,共5页Guizhou Agricultural Sciences

基　　金："十一五"科技支撑计划项目"喀斯特高原生态综合整治技术与示范"(2006BAC01A00-9);"西南石灰岩地区退化天然林恢复与经营技术示范"(2006BAD03A1006-2)

摘　　要：以构件种群理论为基础,应用种群动态生命表的分析方法,对喀斯特森林顶极群落中的主要建群种圆果化香不同生境下一年中叶构件种群的数量动态进行测定分析。结果表明:圆果化香的现叶方式属于爆发型,出生率曲线呈现出双峰和三峰型,有2次爆芽高峰(第1次为正常萌发,第2次为恶劣环境变化激发了叶芽的萌发);落叶曲线呈DeeveyⅡ型存活曲线,3种生境下死亡率曲线不同,林中和孤立2种生境是双峰型,林缘生境为三峰型。讨论了叶种群生命表分析对乔木树种的意义,叶种群的净生殖率R0,世代历期T,内禀增长率rm,周限增长率λ的意义和应用叶种群生命表分析法解释喀斯特特殊环境下,树种叶构件种群对环境的生长对策和更新对策。Platycarya longipes is the main population of Climax community in Karst forestry.The quantity dynamics of annual leaf population of Platycarya longipes under different habitats was analyzed by using the population dynamic life table method based on the modular population theory.The results showed that the leaf emergence pattern is of an eruption characteristic,the curve of leaf emergence rate presents bi-peak and tri-peak types with two peaks of buds emergence,the defoliation curve is a survival curve with a DeeveyⅡ type,the mortality curves are different under different habitats.The paper discusses the application of the leaf population life table analysis in net reproduction rate(Ro),generation time(T),internal increase rate(rm) and finite increase rate(λ)of leaf population,and the growth and regeneration countermeasures of tree leaf modular population to the Karst environment.

关 键 词：圆果化香 叶构件种群 动态生命表 喀斯特 

分 类 号：S72[农业科学—林木遗传育种]