文献类型：期刊文献

中文题名：人工林尾巨桉树木表面轴向生长应变

英文题名：Surface longitudinal growth strain of plantation Eucalyptus urophylla×E.grandis

作者：刘晓丽[1] 姜笑梅[1] 殷亚方[1]

第一作者：刘晓丽

通信作者：Liu, X.-L.

机构：[1]中国林业科学研究院木材工业研究所

年份：2005

卷号：27

期号：6

起止页码：95-98

中文期刊名：北京林业大学学报

外文期刊名：Journal of Beijing Forestry University

收录：CSTPCD;;EI(收录号：2005509546146);Scopus(收录号：2-s2.0-28744441581);北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国际热带木材组织ITTO项目(PD69/01);国家自然科学基金项目(30300270)

语种：中文

中文关键词：应变片法;人工林尾巨桉;表面轴向生长应变

外文关键词：strain gauge method; plantation E. urophylla × E. grandis; surface longitudinal growth strain

分类号：S781.2

摘要：为评估人工林尾巨桉生长应力水平并揭示其变异情况,采用应变片法对其表面轴向生长应变进行了测试.研究表明,表面轴向生长应变为拉应变,活立木胸高处表面轴向生长应变平均值基本分布在650×10-6～1 100×10-6之间;生长应变的测试一般需要3 min左右,这时应力释放完毕,应变值达到稳定.尾巨桉两个家系间及树干两个方位(南、北向)间的表面轴向生长应变差异不显著,沿树高变化不明显.
Surface longitudinal growth strain （SLGS） of plantation E. urophylla x E. grandis was measured by using strain gauge for evaluating the magnitude and variance of SLGS . Results show that SLGS is a kind of tensile strain and the mean value of SLGS of standing trees distributes between 650×10^-6 and 1 100×10^-6 mainly at 1.3 m height. Also, it needs about 3 min to measure SLGS normally since at this time, the strain releases completety and the value of SLGS turns to be stable. It is also found that there are no significant differences not only between two families of E. urophylla × E. grandis, but also two orientations （North and South）of stem and the relationship of SLGS with tree height is weak.