蒙古栎幼树生长状况调查研究

Study on Growth Status of Quercus mongolica Saplings

本研究以2004-2006年播种的蒙古栎幼树为研究对象,采用描述分析、变异分析和比较分析对其树高、胸径、叶长和叶宽进行探讨,结果如下:蒙古栎幼树在2～4年内的树高和胸径增长量明显,且随着树龄的增加,种群个体间的差异情况有增大的变化趋势。蒙古栎叶片的长和宽在3～4年间个体间差异表现和均值均趋于稳定。蒙古栎幼树树高和叶长在种群个体间差异较小,胸径和叶宽在种群个体间差异相对较大,但各调查指标平均变异系数均未超过25%,反映出蒙古栎幼林的整齐性比较好。

Taking Quercus mongolica sapling sowed in 2004-2006 as the research object,the height,dbh,leaf length and leaf width of Quercus mongolica have been discussed by use of description analysis,variation analysis and comparative analysis.The results show that the height and dbh growth of Quercus mongolica saplings raise significantly in 2～4 a,and with the increase of forest age,the difference among individuals of the population has an increasing trend.The difference among individuals and the average value of Quercus mongolica sapling become stable for the leaf length and width in 3～4 a.The difference among individuals for height and leaf length is smaller,but the difference among individuals for dbh and leaf width is relatively bigger.The average variation coefficient of all investigating indexes are not more than 25%,which show that the regularity of Quercus mongolica sapling is better.