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Effect of different management on quality and value production of pure beech stands in Slovakia

机译：不同管理对斯科维亚纯山毛榉木纯榉木质量和价值生产的影响

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Value production is one of the most important information for comparing different management strategies in forestry. Although the value production of forest stands is affected by various factors (stem and assortment quality, stem dimension, stem injury, price of assortments), thinning can be considered as one of the most important one. This paper aims at the evaluation of qualitative and value production in homogeneous beech stands, which were managed by two different thinning types for period of 45 to 55 years: (i) a?? heavy thinning from below (C grade according to the German forest research institutes released in 1902) and (ii) a?? ??tefan???-k?′s free-crown thinning. The third variant was control (iii) a?? subplot with no interventions. Silvicultural quality characteristics of the lower half of the stem were assessed using a 4-class scale (A a?? the best quality, D a?? the worst quality). Assortment structure (commercial quality) was estimated for each stem by an assortment model developed in the past. Nearly 3,000 individual trees aged from 83 to 105 years from 23 subplots established across the Slovakia territory were assessed. The highest volume of the best silvicultural quality of stems (A class) has been reached in forests where ??tefan???-k?′s free-crown thinning was applied (57 a?? 85%) while the lowest (22 a?? 56%) on subplots with no management. The proportion of two best commercial quality assortments (I + II) was highest in forests managed by heavy thinning from below (21 a?? 29%) and the lowest when no treatment was applied (7 a?? 19%). The highest value production (expressed in a?? haa??1) was reached in the forests treated by free-crown thinning. Results suggested the overall positive impact of thinning on the increase of value production in beech forests. Particularly, the free-crown thinning focusing on selection of best quality trees should be preferred as it leads, besides its sufficient value production, to a higher vertical differentiation of the beech forests.
机译：价值制作是比较林业不同管理策略的最重要信息之一。虽然森林股票的价值产量受到各种因素的影响（茎和分类质量，茎尺寸，茎损伤，分类价格），但变薄可以被视为最重要的因素。本文旨在评估均匀山毛榉展台的定性和价值生产，其由两种不同的减薄类型进行管理，为45至55岁：（i）a ??从下面的繁重变薄（根据1902年发布的德国森林研究机构的C级）和（ii）a ?? ?? Tefan ??? - K？的自由皇冠变薄。第三种变体是控制（iii）a ??没有干预的子图。使用4级秤评估茎下下半部分的造林质量特征（a ??最佳质量，d a最糟糕的质量）。各种各样的分类结构（商业质量）通过过去开发的分类模型估计每个茎。从斯洛伐克境内建立的23个汇总的近3000名从83到105岁的近3,000棵，被评估。在森林中达到了最佳造林质量的最佳造林质量的最高体积??? - K？施加的自由冠稀土（57 A ?? 85％），而最低（22 a ?? 56％）在没有管理层的子彩票上。两种最佳商业质量分类（I + II）的比例在森林中，在低于稀疏（21A ?? 29％）和最低施加治疗时的森林中最高（7A ?? 19％）。在自由皇冠稀疏治疗的森林中达到了最高价值的产量（在Haa'o-1中表达）。结果表明稀疏对山毛榉森林价值产量增加的总体影响。特别是，除了其足够的价值产生之外，应优选重点选择最佳品质树木的自由冠稀疏，这是优选的，因为它对其足够的价值产生，以更高的山毛榉森林的垂直分化。

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