BF, Forestry Library, Ljubljana (GIS)
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Recruitment of European beech, Norway spruce and silver fir in uneven-aged forests [Elektronski vir] : optimal and critical stand, site and climatic conditionsTrifković, Vasilije ; Bončina, Andrej ; Ficko, AndrejTree recruitment models are important for predicting the dynamics of uneven-aged forests. Previous studies of recruitment of European beech, Norway spruce and silver fir have shown different ... ecological amplitudes of these species. However, recruitment in uneven-aged stands and the values of environmental factors at which the greatest and poorest recruitment can be expected remain poorly explained. The main objectives of this study were to 1) explain how 39 stand, site and climatic factors and their interactions influence the number of recruited trees in uneven-aged forests; 2) determine the optimal and critical ranges of influential factors, including stand basal area, number of trees, proportion of tree species, shade casting, soil pH, site productivity, temperature and precipitation; and 3) estimate the maximum expected response of recruitment to changes in stand density while controlling for the effect of other limiting factors. A Tobit censored regression model was used to consider that the observed range of the number of recruited trees is censored at zero. The models were parametrized and validated using 30,963 forest inventory plots (200 m2 each) in uneven-aged forests in Slovenia. The models, which used 9 stand, 6 site and 3 climatic factors, explained 15 %, 10 % and 8 % of the total variation of the number of recruited spruce, fir and beech, respectively. Stand structure was the most important factor, with stand basal area (BA) and the proportion of the studied species having the greatest effect. Site factors including soil pH and rockiness were important for fir recruitment. The number of recruited beech and spruce was positively influenced by decadal precipitation. Higher temperatures decreased recruitment of spruce. Beech was the only species sensitive to shade casting. Recruitment of beech was higher if shade was imposed by tree species other than beech. The optimal and critical ranges of limiting factors differ between species. The model suggests that the optimal stand basal area for recruitment of beech is ≤ 19 m2/ha, which is higher than that for spruce (≤ 16 m2/ha) but lower than that for fir (≤ 28 m2/ha). The maximum predicted response of the studied species to changes in stand basal area shows that stand density control is efficient for regulating recruitment of spruce and beech, but not for fir. The suggested sensitivities and threshold values may be used in individual tree growth models or simulation–optimization studies in support of forest management decisions.Source: Forest Ecology and Management [Elektronski vir]. - ISSN 1872-7042 (Vol. 529, art. 120679, 2023, 13 str.)Type of material - e-articlePublish date - 2023Language - englishCOBISS.SI-ID - 132318979
Author
Trifković, Vasilije |
Bončina, Andrej |
Ficko, Andrej
Topics
bukev |
smreka |
jelka |
vrast |
potencial vraščanja |
model Tobit |
ingrowth |
Fagus sylvatica |
Picea abies |
Abies alba |
recruitment potential |
Tobit model
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Author | Trifković, Vasilije ; Bončina, Andrej ; Ficko, Andrej |
Title | Recruitment of European beech, Norway spruce and silver fir in uneven-aged forests [Elektronski vir] : optimal and critical stand, site and climatic conditions |
Publication date | 2023-02-01 |
COBISS.SI-ID | 132318979 |
Publication version in repository | Postprint, author's finally reviewed version, accepted for publication |
Publication licence | Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International |
Embargo | Postpone publication for public until 2024-02-01 |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
---|---|---|---|
Razvoj modelov za gospodarjenje z gozdovi v Sloveniji | V4-2014-2020 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
|
Gozd, gozdarstvo in obnovljivi gozdni viri | P4-0059-2020 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Trifković, Vasilije | 52403 |
Bončina, Andrej | 10801 |
Ficko, Andrej | 27615 |
Source: Personal bibliographies
and: SICRIS
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