实心狭叶方竹种群的生物量结构与地下茎生长规律研究  

The Biomass Structure and the Pattern of Subterranean Stem Growth of Chimonobambusa angustifolia f. repletea Clone Population

作　　者：甘小洪[1] 陈启贵[1] 汪海[1] 温中斌[2] 

机构地区：[1]西华师范大学生命科学学院,四川南充637002 [2]重庆市林业科学研究院竹子研究所,重庆梁平405200

出　　处：《林业科学研究》2009年第5期662-666,共5页Forest Research

基　　金：西华师范大学科研启动基金项目(05B035);四川省教育厅青年基金项目(2006B038);四川省重点学科建设项目(SZD0420)

摘　　要：依据Harper的构件生物结构理论和种群生态学方法,对实心狭叶方竹种群的生物量结构和地下茎生长规律进行了研究。结果表明：（1）实心狭叶方竹种群各构件单位的生物量配置为：秆（36.30%）〉叶（21.13%）〉枝（17.82%）〉篼（13.43%）〉鞭（10.18%）〉根（1.14%）。其中地上部分生物量占75.25%,主要集中在1-3龄;不同年龄地上部分各构件单位的生物量分配有较大差异。秆、枝、叶的含水率均以1年生新竹最高,并随年龄的增长而逐渐减小。（2）实心狭叶方竹秆基、秆柄和竹鞭等地下茎各构件较小;秆基和竹鞭上萌芽转化为壮芽的成功率较低;竹鞭主要生长在0-15 cm的土层,幼壮龄鞭有趋浅的动态,不利于其无性系种群的克隆生长,可能是导致其种源稀少的原因之一。According to the theory of component framework and the methods of population ecology, the biomass structure and the pattern of subterranean stem growth of Chimonobambusa angustifolia f. repletea clone population was studied systematically. The results were as follows： （1） The biomass allocations ratios among culm, leaf, branch, bamboo stump, subterranean stem, root were 36.30% , 21. 13% , 17.82% , 13.43%, 10. 18% and 1.14% respectively. Thereinto, the biomass of aboveground parts accounted for 75.25% mostly focused on the ramets from 1 to 3 a. The biomass allocations of aboveground parts varied with age. The water content of culms, branches and leaves of C. angustifolia f. repleta would decrease with aging. （2） The components of subterranean stem of C. angustifolia f. repleta were smaller, and it was difficult for the buds on culm base and bamboo stump to translate into strong buds, and the subterranean stems mainly distributed in the shallow soil of 15 em depth, which was unfavorable to its clone growth resulting in the sparsity of species.

关 键 词：实心狭叶方竹 无性系种群 生物量结构 地下茎生长 

分 类 号：Q795[生物学—分子生物学]