ZLV Online

Abstrakt

The paper evaluates a development of mixed young stand from natural regeneration on a large clear-cut in East Bohemia, the Czech Republic. Clear-cut resulted from windblown forest stand in 2007; after wood clearing a part of plot was left for natural regeneration. The paper evaluates development of regeneration in 2011–2016. Mean number of juvenile individuals culminated in 2014 (2.6 trees/m2), density decrease in next years was affected by mutual competition. Birch (Betula pendula) and aspen (Populus tremula) as nurse tree dominated in upper height stratum. Target tree species occurred mainly in understorey (height below 1.3 m), their quantity gradually increased. Density of target trees species decreased with distance from adjacent mature forest stand. Growth of trees in upper storey corresponded to growth tables, left-hand diameter distribution affected mean stem dimensions. Above growth biomass of nurse stand was 27.9 t.ha-1 (DM) in 2016. Upper soil moisture under nurse stand was lower during the whole year (4–7%) compared to the weeded area; during summer periods short term differences exceeded 10% shortly.