Vliv dubu červeného (Quercus rubra L.) na stav lesních půd – případová studie

V. Podrázský, I. Kupka
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Abstract

Effects of northern red oak on the forest soils were studied at the locality on the territory of the University forests of the Czech University of Life Sciences, Prague. The red oak stand part was compared to a stand part composed of native broadleaves with the dominance of European beech in a 71-year-old stand at the altitude 400 m a.s.l. The site was characterized as acid oak-beech site with Luzula nemorosa. Samples were taken in autumn 2022 for horizons L+F1, F2+H (quantitatively), and Ah, B in 4 replications. Results confirmed slight acidification of the upper soil horizons, consisting of a soil reaction decrease, bases content and base saturation, and especially worsening of the nitrogen dynamics, i.e. increase of the C/N ratio. Northern red oak was documented as a mildly acidifying species in given site conditions and its relevance should be limited to degraded sites and as a species, planted in conditions where domestic species cannot thrive.
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红栎(Quercus rubra L.)对森林土壤状况的影响--案例研究
在布拉格捷克生命科学大学的大学森林所在地研究了北方红橡树对森林土壤的影响。在海拔 400 米的 71 年树龄的林地中,红栎林地与以欧洲山毛榉为主的本地阔叶林地进行了比较。2022 年秋季对 L+F1、F2+H(定量)、Ah、B 等地层进行了取样,共 4 次重复。结果证实,土壤上层略有酸化,包括土壤反应降低、碱含量和碱饱和度降低,尤其是氮动态恶化,即碳/氮比增加。根据记录,在特定的场地条件下,北方红栎是一种轻微酸化的树种,其相关性应仅限于退化的场地,并作为一种树种,种植在国内树种无法生长的条件下。
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