Slenderness of trees in black locust stands

Bijak, Szymon; Orzoł, Katarzyna

Slenderness of trees in black locust stands

dc.contributor.author	Bijak, Szymon
dc.contributor.author	Orzoł, Katarzyna
dc.contributor.organization	Szkoła Główna Gospodarstwa Wiejskiego, Wydział Leśny, Samodzielna Pracownia Dendrometrii i Nauki o Produkcyjności Lasu	en
dc.date.accessioned	2019-06-25T13:15:48Z
dc.date.available	2019-06-25T13:15:48Z
dc.date.issued	2018-06-15
dc.description.abstract	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 its height (h) as well as its diameter at breast height (d) and determined the 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.	en
dc.identifier.citation	Bijak, S., Orzoł, K. (2018). Slenderness of trees in black locust stands. Forest Research Papers. 79 (2) :113-117. 10.2478/frp-2018-0012.	en
dc.identifier.doi	10.2478/frp-2018-0012
dc.identifier.issn	2082-8926
dc.identifier.uri	https://open.icm.edu.pl/handle/123456789/17027
dc.language.iso	en
dc.publisher	Instytut Badawczy Lesnictwa (Forest Research Institute), Sekocin Stary, Poland	en
dc.rights	Uznanie autorstwa-Użycie niekomercyjne-Bez utworów zależnych 3.0 Polska	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/pl/	*
dc.subject	Robinia pseudoacacia	en
dc.subject	slenderness	en
dc.subject	Kraft class	en
dc.subject	age class	en
dc.subject	crown parameters	en
dc.title	Slenderness of trees in black locust stands	en
dc.title.alternative	Smukłość drzew w drzewostanach robiniowych	pl
dc.type	article	en