Natural regeneration in relation to different gap sizes

Bc. Nina Maria Hiitola

Master's thesis

Prirodzená obnova a rast drevín mierneho pásma v závislosti na veľkosti porastových medzier

Abstract:

Táto diplomová práca vyhodnocuje prirodzenú obnovu v porastových medzerách a skúma faktory ovplyvňujúce dynamiku a rast zmladenia. Sú zhodnotené vzťahy medzi lesnou obnovou a mikroklimatickými podmienkami, so zameraním na svetelné podmienky a veľkosť medzier. Meranie bolo vykonané na desiatich polkruhových skúšobných plochách, veľkých od 0,02 ha do 0,13 ha. Vyhodnotenie obnovy bolo zamerané na určenie dominantných druhov a zaznamenanie ich hustoty a výšok vzhľadom k ich pozícií v rámci porastovej medzery.

Abstract:

The goal of this diploma thesis was to assess the spatial and temporal development of natural tree regeneration in forest openings, in the temperate forest types of South Moravia, Czech Republic. Relationships between micro-site conditions and seedling growth were analysed, with focus on gap size, light conditions and soil environment. Ten different semi-circular gaps, ranging from 0.02 hectares to 0.13 hectares in size, were included for carrying out sampling. The sampling followed a long-term research set up in 2013 by the Training Forest Enterprise Masaryk Forest Křtiny. The regeneration census focused on identifying prevalent species and recording their density and height class, in relation to their position in a canopy gap. Beech (Fagus sylvatica), Norway spruce (Picea abies) and silver fir (Abies alba) were the prevailing target species with varied mixed compositions, suggesting management favourability towards selection systems and irregular shelterwood system due to the high functioning level of shade tolerant tree dynamics.

Keywords

buk, prírode blízke pestovanie lesa, obnova, smrek

Keywords

spruce, beech, regeneration, close to nature silviculture

Language used: English

Date on which the thesis was submitted / produced: 13. 4. 2018

Thesis defence

• Supervisor: doc. Ing. Radek Pokorný, Ph.D.
• Reader: Jiří Novák, Ph.D.

Mendel University in Brno

Faculty of Forestry and Wood Technology

Master programme / field:
European Forestry / European Forestry