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.
出处
《贵州农业科学》
CAS
北大核心
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)
关键词
构树
芽种群
数量分布
密度
命运
Broussonetia papyrifera
buds population
quantity distribution
density
fate
