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Journal of the Forestry (Šumarski list), Vol. 145 No. 1-2, 2021.

Original scientific paper

https://doi.org/10.31298/sl.145.1-2.3

Polymorphic site index curves for Beech (Fagus sylvatica L.) in Central and Eastern Serbia

Branko Stajić orcid id orcid.org/0000-0001-8542-3173 ; University of Belgrade, Faculty of Forestry, Belgrade, Serbia
Živan Janjatović ; University of Belgrade, Faculty of Forestry, Belgrade, Serbia
Marko Kazimirović ; University of Belgrade, Faculty of Forestry, Belgrade, Serbia
Zvonimir Baković ; Public Enterprise Srbijašume, Belgrade, Serbia
Snežana Obradović orcid id orcid.org/0000-0002-6128-5957 ; University of Belgrade, Faculty of Forestry, Belgrade, Serbia

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Abstract

This study was mainly aimed at constructing polymorphic site index curves for beech in the central (Rudnik mountain – RU, about 15,000 ha) and eastern (Žagubica – ŽA, about 7,000 ha) part of its distribution in Serbia. To obtain suitable height-age data and evaluate the best-fit growth model we used 107 felled dominant beech trees. The Korf, Korsun and Chapman-Richards growth functions per site class were first parameterized and then mutually compared with respect to residual statistics and the significance of their parameters. They were additionally parameterized in line with empirical data on the value and age of the culmination of current annual height increment (CAIh). The obtained results indicated that the Chapman-Richards growth function showed the best results both by statistical (residuals standard error, significance of the parameters, distribution of residuals, and homoscedasticity) and by empirical criteria (the CAIh culmination time, the maximal values of the CAIh, and the attained height of trees at a certain age) of the height-age beech modelling in the analyzed regions. The obtained polymorphic site index curves which classify sites with regard to their productivity can be very helpful in planning appropriate silvicultural treatments, and for decision-making in forest management planning, forest policy and ecology and, consequently, in the sustainable management of beech forests in Serbia and some neighbouring countries with a similar forestry sector development.

Keywords

height growth pattern; site index curves; beech; Serbia

Hrčak ID:

252957

URI

https://hrcak.srce.hr/252957

Publication date:

28.2.2021.

Article data in other languages: croatian

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