| Název článku: | Štruktúra porastov, svetelná mikroklima a distribúcia jedincov dolnej vrstvy vo výberkových lesoch v dvoch lokalitách Slovenska |
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| Číslo: | 3 |
| Rok: | 2016 |
| Autor: | Jaroslav Vencurik, Stanislav Kucbel, Milan Saniga, Peter Jaloviar, Zuzana Parobeková, Denisa Sedmáková, Ján Pittner |
The goal of the study was the analysis of structure and distribution of lower tree layer individuals according to the microsite conditions in mixed spruce-fir (beech) selection forests of Slovakia. The collection of data for the analysis of structure and lower tree layer of selected forest stands was carried out in 2013 on a series of 138 sample plots. For the lower tree layer individuals (dbh ≤ 8 cm) we registered tree species and height, and in the case of seedlings with height ≤ 20 cm also the seedbed type (moss, moss with Vaccinium myrtillus, litter, litter with V. myrtillus, deadwood and others). We assessed the percentage of ground vegetation coverage. In the centre of each research plot, hemispherical photographs were taken in the heights of 1.3 m and 3.5 m above the ground. The results showed that diffuse radiation was not correlated with any basic dendrometric traits of studied stands. In general, increased amount of diffuse light had a positive impact on the representation of Norway spruce in lower tree layer, however, there was a rather negative influence on the silver fir. Litter as a seedbed formed suitable conditions for germination and establishment of fir seedlings. Emergence of spruce seedlings on litter was limited mainly by the share of spruce needles. In the stands with high spruce proportion, the dominant seedbed for its natural regeneration were therefore the mosses, also in combination with Vaccinium myrtillus.
