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Growth response of advanced planted European beech ( Fagus sylvatica L. ) after storm-caused loss of shelterwood
European Journal of Forest Research ( IF 2.8 ) Pub Date : 2021-04-16 , DOI: 10.1007/s10342-021-01376-x
Johannes Weidig , Sven Wagner

Outcomes after an abrupt, storm-caused loss of spruce shelterwood (Picea abies L. Karst.) overstories on advanced planted beech (Fagus sylvatica L.) were investigated, including effects of developmental stage and beech stand density on growth after release. Six years after overstorey loss by storm Kyrill in January 2007, heights and root collar diameters were measured, along with annual length of the main shoot and ring widths of the stem and strongest branch. No significant difference in the total height of released and sheltered beeches was found at six years after shelter loss, but annual growth of the main shoot of released beeches increased from the second year after release. Overall growth patterns of released and sheltered beech differed significantly. Diameter growth and that of the strongest branch increased strongly after shelter loss. Height-to-diameter ratio (H/RCD) indicated that sheltered beeches with higher densities were slenderer. However, no differences were found in growth response between young stands and beech in the thicket live stage. Overall, advanced planted beech beneath a spruce shelterwood of medium canopy closure showed vigorous height growth and a qualitatively desired form. Sudden release of the planted beech enhanced diameter growth of stem and branches, which is undesirable for timber quality. Findings suggest that advanced planted beech should not be released by abruptly cutting the shelterwood. Instead, with stepwise canopy opening beech should gradually adapt to the open conditions.



中文翻译:

暴风雨造成的木料流失后,欧洲先进种植的欧洲山毛榉(Fagus sylvatica L.)的生长响应

调查了暴风雨造成的高级种植山毛榉(Fagus sylvatica L.)的云杉防护材(Picea abies L.Karst。)上层突然丢失的结果,包括发育阶段和山毛榉林分密度对释放后生长的影响。暴风雨后的基里尔(K yrill)造成高楼大厦损失六年在2007年1月,测量了高度和根颈直径,以及主茎的年长度,茎和最强枝的环宽度。在失去庇护所后的六年,释放的山毛榉和被掩盖的山毛榉的总高度没有显着差异,但是从释放后的第二年开始,释放的山毛榉的主茎的年生长增加。被释放和被遮盖的山毛榉的总体生长方式差异很大。避难所消失后,直径的增长和最强分支的直径增长迅速。高度/直径比(H / RCD)表明,高密度的隐蔽山毛榉较纤细。然而,在灌木丛生长期中,幼林和山毛榉之间的生长反应没有差异。全面的,在云雾遮盖的中度树冠封闭下种植的高级山毛榉显示出旺盛的高度增长和定性的理想形态。种植的山毛榉的突然释放增强了茎和枝的直径,这对木材质量是不利的。研究结果表明,不应通过突然砍伐防护林来释放高级种植的山毛榉。取而代之的是,随着台阶的开放,山毛榉应逐渐适应开放条件。

更新日期:2021-04-16
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