The random factors were the canopy, slope degree, vegetation type, tree height, shrub height, tree stump height, tree hole density and human disturbance.

而郁闭度、坡度、植被类型、乔木高度、灌木高度、树桩高度、树洞密度、人为干扰的影响不明显。

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The main research contents for the study are as follow:At first, the paper compares the height of stump under machinery operation and manual operation.

本论文的研究工作主要由以下几个部分展开：首先对比机械采伐和油锯采伐的伐根高度差异性；

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