四季竹立竹地上现存生物量分配及其与构件因子关系  

Above-ground Biomass Allocation and Relationship with Ramet Component of Oligostachyum lubricum

作　　者：顾大形[1] 陈双林[1] 郭子武[1] 杨清平[1] 李迎春[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400

出　　处：《林业科学研究》2011年第4期495-499,共5页Forest Research

基　　金：杭州市科技攻关专项"杭州市笋用竹栽培水平提升的关键技术研究与示范"(20070632B31);杭州市重大科技创新项目"高品质笋用竹种质资源发掘与开发利用关键技术研究与示范"(20072312A23)

摘　　要：通过对四季竹立竹构件因子和地上生物量的调查,分析了立竹地上现存生物量分配格局及立竹构件因子与构件生物量的关系。结果表明:地上现存生物量分配格局1年生立竹为竹秆>竹叶>竹枝,2年生立竹为竹叶>竹秆>竹枝,2年生立竹竹秆和竹叶生物量分配比例较1年生立竹分别极显著减少和增加,而竹枝生物量分配比例不同年龄立竹间无显著变化。2年生立竹各构件因子与构件生物量间大多呈显著或极显著相关,立竹全高、枝下高、枝盘数是立竹胸径的从属因子,立竹胸径对立竹构件生物量和地上部分总生物量起着决定作用,两者具有极显著的三次曲线函数关系。四季竹在资源分配时对竹叶构件的倾斜有利于种群对已占领生境的巩固和新生境的开拓。The above-ground biomass and component factors of Oligostachyum lubricum were investigated and the above-ground biomass allocation and its relationship with ramet component were analyzed.The results indicated that present above-ground biomass allocation pattern of 1-year-old stands was stem﹥foliage﹥twig and that of 2-year-old stands was foliage﹥stem﹥twig.The rate of stem biomass of 2-year-old stands was extremely lower while that of foliage biomass of 2-year-old stands was extremely higher respectively than that of 1-year-old stands.However,there was no significant difference in twig biomass between 1-and 2-year-old stands.There were significant or very significant correlation between component factors and component biomass of 2-year-old stands.The total height（TH）,height under branch（HB） and round of branches（RB） were subordinate factors of the diameter at breast-height（DBH） of 2-year-old stands.DBH of stands had decisive effects on the biomass of each component and above-ground part of stands and the relationship between them followed very significantly a cubic function.Increasing in allocation proportion of foliage biomass was beneficial to develop new habitat and consolidate present habitat for O.lubricum.

关 键 词：四季竹 立竹构件 生物量模型 生物量分配格局 

分 类 号：S795.9[农业科学—林木遗传育种]