ZLV Online

Measurement of basic dendrometric characteristics of trees at two transects (T1 and T2) and allometric relations allowed quantification of carbon stock in the tree components (foliage, branches, stem and roots) in young stands ten years after large-scale wind damage (November 2004). The results were compared with situation in the formerly existing stands based on data of the Forest Management Plan (1997). Mean hectare carbon stock in biomass of young stands was 5.8 t (T1) and 6.7 t (T2); stems contributed by 31.5% and 37.3%, respectively. Mean hectare carbon stock in formerly existing stands was 97.8 t with stems sharing 68.1%. Significant differences were found in foliage carbon stock, particularly 21.7% and 15.0% at the T1 and T2 transects compared to 4.7% in the former stands. Different biomass allocation was reflected in contrasting carbon regimes. For instance, while carbon stock in woody parts (sequestrating carbon for long period) was 16- and 20-fold higher in former stands than at the disturbed transects, carbon loss via foliage litter was only 2.5-fold. The contrasting situations related not only to different growth stages of stands, but also to differences in tree species composition.