文献类型：期刊文献

中文题名：西南桦花序生长和开花物候特征

英文题名：Inflorescence Growth and Flowering Phenology of Betula alnoides

作者：赵志刚[1] 程伟[2] 郭俊杰[1] 曾杰[1] 赖家业[3]

第一作者：赵志刚

机构：[1]中国林业科学研究院热带林业研究所;[2]山东省淄博市淄川区林业局;[3]广西大学林学院

年份：2011

卷号：24

期号：3

起止页码：385-389

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家"十一五"科技支撑专题"优质珍贵用材树种桦木;水曲柳新品种选育"(2006BAD01A1605);中西南桦研究的部分内容

语种：中文

中文关键词：西南桦;开花物候;开花同步性;立地

外文关键词：Betula alnoides; flowering phenology; flowering synchrony; site condition

分类号：S718.5

摘要：从花序、单株、林分水平上对广西靖西县的一个土石山生态交错区内不同立地条件下西南桦的开花物候进行了观察和比较。结果表明:西南桦雌、雄花序开花持续时间为2 3 d,同一植株相同部位的雌花序较雄花序晚开花约14 d;其单株开花持续时间为4 28 d,开花同步性指数为0.160 0.259,绝大多数植株的冠层开花顺序依次为下层、中层和上层,土山和石山立地间单株开花持续时间和开花同步性均差异不显著(P>0.05);在林分水平上,西南桦开花持续时间为40 58 d,两种立地间差异不显著。
Flowering phenology of Betula alnoides under different site conditions was observed and compared at inflorescence,individual and stand levels in an ecotone of two types of soils originated from limestone（site L） and granite（site G）,respectively,at Jingxi County,Guangxi.The flowering of both male and female inflorescences lasted two to three days,and male inflorescences normally bloomed approximately fourteen days earlier than female ones at the same positions on a tree.At individual level,flowering lasted four to twenty eight days with flowering synchrony index of Augspurger（1983） ranging from 0.160 to 0.259 in each plot,and majority of trees flowered initially upper canopy,followed by middle and lower parts.There existed no significant difference of flowering duration and synchrony between individuals of site G and L（P0.05）.And flowering lasted forty to fifty eight days without significant difference of flowering duration between both sites at stand level.