Impact of Tending Measures on Assortment Structure of Fellings in Central Croatian Beech Stands

Prka, Marinko and Krpan, Ante P. B. (2010) Impact of Tending Measures on Assortment Structure of Fellings in Central Croatian Beech Stands. ACTA SILVATICA ET LIGNARIA HUNGARICA: AN INTERNATIONAL JOURNAL IN FOREST, WOOD AND ENVIRONMENTAL SCIENCES, 6 (1). pp. 171-182. ISSN 1786-691X

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Abstract

The effects of management of even-aged beech stands on the quality of beech timber assortments by type of cut were investigated in the region of Bjelovar. The research was carried out using Croatian timber standards. Assortment tables were developed separately for thinning and intermediate felling, and separately for regeneration and final felling in accordance with the interventions of management. The average shares of assortments maintained the same ratios by quality classes regardless of the applied standards (HRN or HRN EN). The research identified the problems in production of assortments, and justified the need for developing separate tables for thinning, intermediate felling, and for regeneration and final felling. Through forest management the quantity and quality of timber assortments may be oriented to a certain extent towards the production target. With the application of tending measures the value of the stand and timber assortments increases over time. In economic respect, the development of false heartwood shows an opposite trend. Therefore a compromise must be achieved by proper management and determination of appropriate harvesting age of beech stands.

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