Growth dynamics of the Norway spruce and silver fir understory in continuous cover forestry
Jaroslav Vencurik (1) , Stanislav Kucbel (1), Milan Saniga (1), Peter Jaloviar (1), Denisa Sedmáková (1), Ján Pittner (1), Zuzana Parobeková (1), Michal Bosela (2)
iForest - Biogeosciences and Forestry, Volume 13, Issue 1, Pages 56-64 (2020)
doi: https://doi.org/10.3832/ifor3183-012
Published: Feb 05, 2020 - Copyright © 2020 SISEF
Research Articles
Abstract
The conversion to uneven-aged, mixed-species stands represents one possible way to mitigate the consequences of disturbances in Norway spruce forests in Central Europe. A better understanding of the establishment and growth dynamics of the understory can contribute to a more effective conversion process. Here we investigate the structure of understory, light climate and growth of natural regeneration of Norway spruce and silver fir in two forest stands undergoing conversion to continuous cover forestry. Stand-wise forest inventory was conducted in 1993 and 2013. The natural regeneration was surveyed, and the light conditions and inter-tree competition were quantified in 51 sample plots established across the stands in 2013. Our results suggest that the diffuse radiation strongly affects the height growth of fir and spruce natural regeneration. We do not confirm the effect of local sapling density on the regeneration dynamics. The results further show that fir trees grow faster than spruce under less intensity of diffuse light. Most of the spruce and fir trees reached the upper limit of the lower overstory (DBH 12 cm) at approximately 50 years of age. Thus, more substantial reductions in stand density can lead to a well-differentiated structure in less than five decades. To control the prospective representation of spruce and fir in mixed-species forests undergoing the conversion, managing of light conditions is crucial.
Keywords
Conversion to Selection Forest, Natural Regeneration, Height Growth, Diffuse Light
Authors’ Info
Authors’ address
Stanislav Kucbel
Milan Saniga
Peter Jaloviar
Denisa Sedmáková 0000-0001-5556-0839
Ján Pittner
Zuzana Parobeková
Department of Silviculture, Faculty of Forestry, Technical University in Zvolen, Masarykova 24, 960 53 Zvolen (Slovak Republic)
Department of Forest Management and Geodesy, Faculty of Forestry, Technical University in Zvolen, Masarykova 24, 960 53 Zvolen (Slovak Republic)
Corresponding author
Paper Info
Citation
Vencurik J, Kucbel S, Saniga M, Jaloviar P, Sedmáková D, Pittner J, Parobeková Z, Bosela M (2020). Growth dynamics of the Norway spruce and silver fir understory in continuous cover forestry. iForest 13: 56-64. - doi: 10.3832/ifor3183-012
Academic Editor
Davide Ascoli
Paper history
Received: Jul 03, 2019
Accepted: Nov 28, 2019
First online: Feb 05, 2020
Publication Date: Feb 29, 2020
Publication Time: 2.30 months
Copyright Information
© SISEF - The Italian Society of Silviculture and Forest Ecology 2020
Open Access
This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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