DOI: 10.11118/978-80-7701-049-8-0117

KOMPETIČNÍ VZTAHY V POROSTECH S ROZDÍLNOU STRUKTUROU A JEJICH VLIV NA TLOUŠŤKOVÝ PŘÍRŮST / COMPETITIVE RELATIONSHIPS IN STANDS WITH DIFFERENT STRUCTURES AND THEIR EFFECT ON RADIAL INCREMENT

Martin Kománek¹, Eliška Žižková¹, Černý Jakub^1,2

¹ Mendelova univerzita v Brně, Lesnická a dřevařská fakulta, Ústav zakládání a pěstění lesů, Zemědělská 3, 613 00 Brno, Česká republika

² Výzkumný ústav lesního hospodářství a myslivosti, v. v. i., Výzkumná stanice Opočno, Na Olivě 550, 517 73 Opočno, Česká republika

This study examined competition in forest stands with varying structures. The structure of forest stands plays a significant role in the production of individual trees and the wider ecosystem. Monocultures are more susceptible to decay than mixed forests, which comprise at least two tree species. In the Czech Republic, forest ecosystems are primarily disrupted by abiotic factors, most frequently a combination of water shortage and wind damage. With changing forest composition, there is a necessity to focus on stand mixtures and their production capacity. Norway spruce and European beech monocultures (A), even-aged mixed stands (B), and stands with a differentiated structure converted to selection forest (C) were analysed. The increment of spruce at the basal area in differentiated stands converted to uneven-aged forest was significantly higher (p<0.05) than that of spruce in other variants and beech in monoculture. The differences were not significant for beech, partly due to the lower DBH in the mixed stand variant, where spruce dominates over beech when comparing diameter at breast height.

Keywords: Norway spruce, European beech, competition, mixed forests, monocultures

pages: 117-123, Published: 2025, online: 2025