Relationships between Structural Indices and Conventional Stand Attributes in an Old-Growth Forest in Southeast Europe

Srdan Keren , Miroslav Svoboda , Pavel Janda , Thomas Nagel


Structural indices are oftenproposedas guidingmeasures for increasing structuralheterogeneity. However, few studies have examined the association between such indices and conventional stand attributes. The primary objectives of this studywere to evaluate changes in structural heterogeneity and tree species diversity at different plot sizes and to quantify the relationships between conventional stand attributes (mean tree diameter, absolute tree density, basal area, species proportion) and structural indices in a mixed old-growth forest in Southeast Europe. Paired tests were used to identify significant changes in structural heterogeneity with increased plot area, while the relationships between stand attributes and analyzed indices (Gini, diameter differentiation, species mingling, and Shannon’s index) were evaluated with Pearson’s correlations. The index values of Gini, diameter differentiation, and tree speciesminglingwere rather stablewith the increase of plot size, whereas tree species diversity increased significantlywith the increase of plot area from200m2 to 1500m2. Themeasures of tree speciesmingling and tree species diversity were strongly associated with each other, while their association with diameter variability was weak to moderately strong. Tree species mingling index was strongly associated with the changes in tree species proportions. However, conventional stand attributes were generally not strongly correlated with the examined indices. For restoring and maintaining old-growth characteristics, forest managers may use structural indices to increase small-scale structural heterogeneity, tree species mingling, and diversity, but only as an additional set of measures, not as surrogates for conventional stand attributes.
Author Srdan Keren (FoF / Department of Forest Resource Management)
Srdan Keren,,
- Department of Forest Resource Management
, Miroslav Svoboda - Czech University of Life Sciences
Miroslav Svoboda,,
, Pavel Janda - Czech University of Life Sciences
Pavel Janda,,
, Thomas Nagel - Czech University of Life Sciences, University of Ljubljana
Thomas Nagel,,
Journal seriesForests, ISSN 1999-4907, (N/A 100 pkt)
Issue year2020
Publication size in sheets0.6
Keywords in Englishdiameter variability; species mingling; old-growth forest; plot size; tree species diversity; quantified relationships
ASJC Classification1107 Forestry
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
Relationships between Structural Indices and Conventional Stand Attributes in an Old-Growth Forest in Southeast Europe of 19-12-2019
1,31 MB
Score (nominal)100
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.943; WoS Impact Factor: 2018 = 2.116 (2) - 2018=2.453 (5)
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FinansowanieCzech researchers were supported by the institutional project “EVA 4.0”, No. CZ.02.1.01/0.0/0.0/16 _019/0000803 andMSMT project LTC17055 (Czech Republic). Polish and Slovenian researchers were supported by the project Innovative forestMAnagEment STrategies for a Resilient biOeconomy under climate change and disturbances (I-MAESTRO) under the umbrella of ForestValue ERA-NET Cofund, among others by the National Science Centre in Poland (NCN) and SlovenianMinistry of Education, Science and Sport (MIZS). ForestValue has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement Nr 773324.
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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