【摘要】 [目的]研究坡向和坡位对枫香与细柄阿丁枫人工混交林生长及种间竞争状况的影响。[方法]基于不同坡向和坡位下16年枫香+细柄阿丁枫行间混交人工林生长的调查数据,分析2个树种的树高、胸径、平均最大冠幅、林木材积与林分蓄积等变化特征。[结果]坡向和坡位对枫香造林保存率无显著影响,而细柄阿丁枫造林保存率为半阳坡>阳坡,且随着坡位的上升而逐渐增加。枫香和细柄阿丁枫的平均树高、胸径和平均单株材积均呈现出阳坡>半阳坡的趋势,且均随着坡位的上升而逐渐降低。枫香的林分蓄积量为阳坡>半阳坡,且随着坡位的上升而逐渐降低,但细柄阿丁枫呈现出完全相反的趋势。同时,阳坡下枫香的林木保存率、平均胸径、平均树高、平均单株材积和单位林分蓄积量均显著高于同一坡位下的细柄阿丁枫;半阳坡下,2个树种的平均树高、平均胸径、平均单株材积和单位林分蓄积量无显著差异,但枫香在下坡的林木保存率显著高于细柄阿丁枫,而中坡和上坡则无显著差异。[结论]在阳坡条件下,尤其是中、下坡位,种间竞争激烈,枫香的生长占据了绝对的优势位导致细柄阿丁枫的生长受抑。而在半阳坡区域,光照等资源环境有限导致混交树种之间的竞争加剧。更多还原

【Abstract】 [Objective]To study the growth and interspecific competition of the artificial mixed forest of Liquidambar formosana Hance and Altingia chinensis.[Method]Based on the survey data of 16 a L. formosana Hance and A. chinensis from a mixed forests,to analyze the tree height, DBH, average maximum crown, the individual tree volume and the stand volume of the two species.[Result]The difference in aspects and slope position had no significant effect on the preservation rate of L. formosana Hance. The preservation rate of A. chinensis on the semi-sun slope was larger than that of the sunny slopes, and gradually increased with the increase of the slope position. At the same time, the average tree height, DBH and average single-tree volume of L. formosana Hance and Altingia chinensis on the sunny slopes were larger than the semi-sunny slopes, and both gradually decreased with the increase of the slope position. The stand volume of L. formosana Hance on the sunny slope was higher than that of semi-sunny slope, and it gradually decreased with the increase of slope position, but A. chinensis showed a completely opposite trend. At the same time, the tree preservation rate, average DBH, average tree height, average tree volume and stand volume of L. formosana Hance under the sunny slope were significantly higher than those of the A. chinensis under the same slope. However, under the semi-sunny slope, there was no significant difference between L. formosana Hance and A. chinensis in average tree height, average DBH, stand volume and unit stand volume, but the preservation rate of L. formosana Hance on the lower slope was significantly higher than that of A. chinensis, there was no significant difference on the mid-slope and upper slope. [Conclusion]Under the conditions of sunny slopes, especially in the middle and lower slopes, the growth of L. formosana occupies an absolute advantage, which leads to the inhibition of the growth of A.chinensis.In the semi-sunny slope area, limited resources and resources have intensified competition between the two species.更多还原