构树芽构件种群结构初步研究  

Preliminary Study on Structure of Composition Population of Broussonetia papyrifera Buds

作　　者：魏媛[1,2] 喻理飞[2] 

机构地区：[1]贵州财经学院资源与环境管理学院,贵州贵阳550004 [2]贵州大学林学院,贵州贵阳550025

出　　处：《贵州农业科学》2010年第6期168-170,共3页Guizhou Agricultural Sciences

基　　金：国家"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"(2006BAC01A09);国家"十一五"科技支撑计划项目"林业生态建设关键技术研究"(2006BAD03A1006);国家重点基础研究发展规划项目(973项目)"喀斯特生物适应对策及物种优化配置"(2006CB403206)

摘　　要：对构树芽构件种群的数量分布、密度及其命运进行了研究。结果表明,芽数量多数分布于侧枝上,占总芽量的56.5%,且活芽库也集中于侧枝上;主干上的芽密度低于侧枝,侧枝上活芽密度大约是主干的2~10倍,且活芽集中分布于树冠的表层。芽种群在林中、林缘、林外三种生境中表现出不同的命运,经过一个严冬后,芽的成活率表现为孤立木〉林缘木〉林中木。The results from studying quantity distribution,density and fate of composition population of Broussonetia papyrifera buds showed that 56.5% buds and living buds distributed on branches,the bud density on the trunk was lower than branches,the living bud density on branches was 2～10 times that on the trunk,the living buds mainly distributed on the surface crown.The bud populations grown different habitats had different survival rate after a harsh winter,and the bud survival rate of the open grown tree that of the marginal treethat of the tree in forest.

关 键 词：构树 芽种群 数量分布 密度 命运 

分 类 号：S792.99[农业科学—林木遗传育种]