Slenderness of 30-year stand silver birch (Betula pendula Roth.)

Korzeniewicz, Roberto Patricio; Borzyszkowski, Wojciech; Szmyt, Janusz; Kaźmierczak, Katarzyna

doi:10.17306/j.afw.2016.2.10

Cited by 3 publications

(7 citation statements)

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“…aside from the parameters of the trunk itself, tree slenderness also depends on the characteristics of the crown, which was pointed out, amongst others, by Jelonek et al (2013), Kaźmierczak et al (2015), Tomczak et al (2015) or Korzeniewicz et al (2016). In the present study, a significant negative correlation was confirmed for black locust slenderness between crown length and relative crown length.…”

Section: Discussionsupporting

confidence: 76%

“…rymer-Dudzińska and Tomusiak (2000) had values for oak and beech that were about 8-10 percentage points lower. also in the case of young birches (Korzeniewicz et al 2016), the variation in the slenderness of trees was lower than that in the black locust tested. However, Kaźmierczak et al (2008a) found a similar variability of slenderness for the oak as the one presented in this study.…”

Section: Discussionmentioning

confidence: 63%

“…A similar average slenderness for the oak tree was also determined by Kaźmierczak et al (2008aKaźmierczak et al ( , 2009, whilst Rymer-Dudzińska and Tomusiak (2000) give a much lower values for this species. the result obtained by Korzeniewicz et al (2016) for birch is significantly higher, but these authors studied juvenile tree stands.…”

Section: Discussionmentioning

confidence: 77%

“…in turn, when the distribution of trees is dense and there is greater competition for light, the increase in height reaches greater values and the tree is more slender. slenderness can be shaped by tree tending treatments performed in a forest stand (Jaworski 2004), resulting, for example, in crown length variation (Korzeniewicz et al 2016). studies to date on tree slenderness in Poland have focused primarily on native forest-forming species.…”

Section: Introductionmentioning

confidence: 99%

“…the slenderness of Norway spruce was investigated by Orzeł and Socha (1999) and Kaźmierczak et al (2008b), whilst that of the Eu-ropean larch was investigated by Kaźmierczak et al (2011Kaźmierczak et al ( , 2012. in the case of deciduous species, common oak (rymer-Dudzińska, Tomusiak 2000; Kaźmierczak et al 2008aKaźmierczak et al , 2009, European beech (Rymer-Dudzińska, Tomusiak 2000) and juvenile silver birch (Korzeniewicz et al 2016) have been analysed. In turn, Orzeł (2007) studied the slenderness of various species of trees in the Niepołomice Forest (including pine and larch).…”

Section: Introductionmentioning

confidence: 99%

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Slenderness of trees in black locust stands

Bijak

Orzoł

2018

Forest Research Papers

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This paper investigates the slenderness of black locust (Robinia pseudoacacia) trees in relation to the biosocial status of the trees, stand age class, crown parameters and habitat type. The research material was collected on 35 research plots in the Sława Śląska, Sulechów and Głogów forest districts in western Poland and comprises 1058 trees. For each tree, we measured height (h) as well as diameter at breast height (d) and determined its biosocial status (Kraft class), crown length (CL) and relative crown length (rCL). The age class and habitat type were assessed at the plot level. Because the obtained values for slenderness (s=h/d) diverged significantly from the normal distribution, we used Kruskal-Wallis and Mann-Whitney tests to investigate the influence of the above-mentioned parameters on the h/d ratio. Black locust slenderness ranged from 0.31 to 1.95 with an average of 0.91 (standard deviation 0.24). It furthermore differed significantly between Kraft classes (the higher the biosocial status, the lower the slenderness) and age classes (the older the trees, the lower their slenderness). We also found a significant effect of the habitat type (in oligotrophic sites trees formed more slender trunks than in mesotrophic sites) and crown parameters on the h/d ratio (decreasing with increasing crown length and relative crown length). The obtained results suggest that the slenderness of black locust does not differ substantially from native broadleaved trees in Poland.

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Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Slenderness of trees in black locust stands

Bijak

Orzoł

2018

Forest Research Papers

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The relationship between height and crown characteristics of four-year-old common birch (Betula pendula Roth)

Klepacki¹

2017

Forest Research Papers

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Abstract. This paper presents the results of an analysis on characteristics of birch crowns (Betula pendula roth) in relation to measures of the growth space occupied by a single tree at a young age. It also presents the relationships between the seedling height and certain crown characteristics.The study focused on four-year-old common birches growing in four different areas in the Elk Forest District in either fresh mixed coniferous or broadleaved forest. The measurements conducted on the chosen trees were used to calculate their crown characteristics such as crown diameter, length, height to the crown base, relative length and spread. They were also used to determine the growth characteristics of a single tree's growth space, such as the crown area projected onto the ground, single tree space and the percentage use of unit area. Furthermore, fresh and dry leaf mass was determined.The birches growing in the fresh mixed coniferous forest reached an average height of 1.30 m, whereas in the fresh mixed broadleaved forest, the height of the trees was lower and amounted to 0.67 m. 95% of the trees had crown diameters of 0.57 m to 0.74 m in the fresh mixed coniferous forest, but only 0.19 m to 0.25 m in the fresh mixed broadleaved forest. The average lengths of the crowns in the fresh mixed coniferous and broadleaved forests amounted to 0.97 m and 0.37 m respectively.The author shows that there is a statistically significant correlation between the seedling height and the other examined characteristics. The best correlation was found between the height and the length of the crown (r = 0.9858) for birches growing in the fresh mixed coniferous forest and between the height and single tree space (r = 0.8468) for birches growing in the fresh mixed broadleaved forest.

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The use of the slenderness coefficient in diagnosing wind damage risks

Skrzyszewski¹,

Pach²

2020

Acta Silv

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Violent and unpredictable winds are a phenomenon that accompanies climate change. The method of limiting the level of wind damage in forests is the cultivation of multispecies, multi-story tree stands, appropriate spatial arrangement of age classes of tree stands, and cultivation measures increasing the stability of a single tree in a stand. There are many features of a single tree that determine resistance to abiotic damage caused by violent winds. In research on the resistance of trees and stands to the damaging effects of wind and snow, the slenderness coefficient is commonly used. The aim of the study is to form: (i) an assessment of the diagnostic (predictive) value of the slenderness coefficient against other variables used in wind damage risk modelling; (ii) a review of critical values of slenderness coefficients; (iii) conclusions for silviculture (forest management) from the research on the stability of tree stands, taking into account the slenderness coefficient.

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Slenderness of 30-year stand silver birch (Betula pendula Roth.)

Cited by 3 publications

References 0 publications

Slenderness of trees in black locust stands

Slenderness of trees in black locust stands

The relationship between height and crown characteristics of four-year-old common birch (Betula pendula Roth)

The use of the slenderness coefficient in diagnosing wind damage risks

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