Next Article in Journal
Prediction of the Long-Term Potential Distribution of Cryptorhynchus lapathi (L.) under Climate Change
Previous Article in Journal
Modelling Post-Disturbance Successional Dynamics of the Canadian Boreal Mixedwoods
Open AccessArticle

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

1
Faculty of Forestry, University of Agriculture in Krakow, al. 29-Listopada 46, 31-425 Krakow, Poland
2
Department of Forest Ecology, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Kamýcka 129, 165 00 Praha-Suchdol, Czech Republic
3
Department of Forestry and Renewable Forest Resources, Biotechnical Faculty, University of Ljubljana, Vecna pot 83, 1000 Ljubljana, Slovenia
*
Author to whom correspondence should be addressed.
Forests 2020, 11(1), 4; https://doi.org/10.3390/f11010004
Received: 29 November 2019 / Revised: 13 December 2019 / Accepted: 16 December 2019 / Published: 18 December 2019
(This article belongs to the Section Forest Ecology and Management)
Structural indices are often proposed as guiding measures for increasing structural heterogeneity. However, few studies have examined the association between such indices and conventional stand attributes. The primary objectives of this study were 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 species mingling were rather stable with the increase of plot size, whereas tree species diversity increased significantly with the increase of plot area from 200 m2 to 1500 m2. The measures of tree species mingling 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. View Full-Text
Keywords: diameter variability; species mingling; old-growth forest; plot size; tree species diversity; quantified relationships diameter variability; species mingling; old-growth forest; plot size; tree species diversity; quantified relationships
Show Figures

Figure 1

MDPI and ACS Style

Keren, S.; Svoboda, M.; Janda, P.; Nagel, T.A. Relationships between Structural Indices and Conventional Stand Attributes in an Old-Growth Forest in Southeast Europe. Forests 2020, 11, 4.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop