梭梭年轮测定方法及生长动态的研究

本项研究在阿拉善荒漠区的吉兰泰、洪高勒、雅布赖等三地采集了梭梭主干解析木的样本 ,借助数码影像技术 ,完成了梭梭解析木分析方法的探讨。发现梭梭年轮的径生长为线性模式 ,这在双子叶木本植物中可能是仅有的。梭梭的高生长仍呈 L ogistic趋势和台阶式步进的特征。在梭梭的年轮分析中 ,可以看到一年生长 2个年轮的情况 ,但在解析木圆盘上的分布具有不确定性 ,大多表现为单侧优先生长的态势。本文确定了梭梭解析木圆盘中生长较快的一侧伪年轮发生频率为 0 .3 75 ,由此可确定梭梭的年龄。采集的样本中有 98年 (龄 )的植株 ,证明梭梭为百年寿命的植物

Studies on the Measuring Method of Growth Rings of Haloxylon Ammodendron and its Growing Dynamics

An analysis method for analytic bole of Haloxylon ammodendron collected in Jilantai, Hong Gaole, and Yabulai was discussed in virtue of digit image technique in this paper. The redial growths show a linear model, which is a unique phenomenon in xyloid dicotyledon. The high growth is still in the Logistic model, And a characteristics of step by stages was shown. It is confirmed that 2 rings could be grown in one year, but the distributions of these rings in analytic discs are indeterminacy, and single side growing priority situations are presented in most cases. That the frequency of false growth rings occurred in the growing faster side is 0.375 was determined in this paper, so the age of Haloxylon ammodendron can be estimated by the frequency. There is an individual, its ages are 98 years, in the collected samples of our work, so it proves that the age of Haloxylon ammodendron may exceed one hundred years.