Carbon fluxes in norway spruce ecosystems after large scale disturbance
2015
Fleischer Peter | Fleischer Peter , j.r. | Homolová Zuzana
In 2004 a windthrow destroyed 12 000 hectares of mature Norway spruce forest on south slopes of the Tatra Mountains. The disturbance stimulated very dynamic ecological processes, including secondary succession and changes in carbon fluxes. Vegetation changes are characterized by notable temporal and spatial species, biomass and leaf area differences. The carbon fluxes change due to reduced photosynthesis and increased soil respiration. In this paper we present data on species abundance, biomass and LAI estimated by different methods on a disturbed site. We present the 2014 soil respiration and photosynthesis data driven by vegetation and microclimate changes estimated by gasometric chamber methods on dominant vegetation types. Calamagrostis vilosa covered 46% and Chamerion angustifolium covered 40% of a study site. Seasonal (April-August) totals for soil C (carbon) flux from site dominated by Chamerion angustifolium was 243 g C.m–2 and by Calamagrostis villosa was 204 g C.m–2. Gross primary production during growing season 2014 for the key species was 306 g C.m–2 for Calamagrostis villosa and 246 g C.m–2 for Chamerion angustifolium. During the growing season 2014 disturbed site emitted 447 g C.m–2 and assimilated 552 g C.m–2, so the site acted as a carbon sink with positive balance of 1.05 t C.ha–1.
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