山西灵空山林区辽东栎萌芽更新规律研究

以灵空山林区典型辽东栎皆伐迹地为研究区,调查了辽东栎伐桩径、高以及萌枝的数量、高度、基径等指标,分析了辽东栎萌芽更新规律。结果表明,在一定范围内,萌芽数量随着伐桩径的增大呈现先增多后减少的规律;而伐桩高与萌芽数量呈现弱相关,萌芽数量大体随着伐桩高的增大而增多,随即产生急剧下降的趋势。但萌枝的平均高、平均基径却不随伐桩径、高的变化而变化。在伐桩径、高的双因素方差分析中发现,对于辽东栎伐桩内萌芽数量而言,伐桩径与伐桩高具有显著的交互作用,而且伐桩高因素(5~20cm与21~40cm范围)具显著差异。

Sprout Regeneration of Quercus liaotungensis in Forest Area in Lingkong Mountains in Shanxi

The law of stump sprouting of Quercus liaotungensis was studied through the investigation of indexes such as stump diameter,stump height,the number of sprouts,the height and foot-diameter of sprouts in the clear-cutting area of Quercus liaotungensis forest in Lingkong mountains.The results show that the number of stump sprouts of Quercus liaotungensis was related to the diameter of stump obviously,it increased as the increase of stump diameter,then it decreased as the stump diameter increased too large.The correlation between stump height and the number of sprouts appeared weak.The number of sprouts increased with the increase of heights of stump,and immediately appeared in a downward trend.However,the growth of the average height and diameter of the sprouts was not related to the diameter and height of stump.It was also found that stump diameter and stump height related prominently to the number of sprouts based on variance analysis on them.And the factor of stump height(5-20cm and 21-40cm range) had extraordinary differences.