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Carbon fluxes of surfaces vs. ecosystems. Advantages of measuring eddy covariance and soil respiration simultaneously in dry grassland ecosystems
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SYSNO ASEP 0363711 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Carbon fluxes of surfaces vs. ecosystems. Advantages of measuring eddy covariance and soil respiration simultaneously in dry grassland ecosystems Tvůrce(i) Nagy, Z. (HU)
Pintér, K. (HU)
Pavelka, Marian (UEK-B) RID, ORCID, SAI
Dařenová, Eva (UEK-B) RID, ORCID, SAI
Balogh, J. (HU)Zdroj.dok. Biogeosciences. - : Copernicus - ISSN 1726-4170
Roč. 8, č. 9 (2011), s. 2523-2534Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova carbon fluxes ; ecosystems ; grassland ecoystems ; measuring eddy covariance ; soil respiration Vědní obor RIV EH - Ekologie - společenstva CEP ED1.1.00/02.0073 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z60870520 - UEK-B (2005-2011) UT WOS 000295375700008 DOI 10.5194/bg-8-2523-2011 Anotace An automated open system for measurement of soil CO2 efflux (Rsc) was developed and calibrated against known fluxes. The system was tested in the field, while estimating soil respiration simultaneously by the gradient method (Rsg) at a dry, sandy grassland site (Bugac, Hungary). Ecosystem respiration (Rego) was measured using the eddy covariance technique. The small chamber size (5 cm in diameter) made it possible to use the chambers in vegetation gaps. The correlation between ecosystem and soil CO2 efflux rates as measured by the independent methods was significant. The gradient method showed both up and downward CO2 fluxes originating from the main rooting zone after rains. Downward fluxes within the soil profile amounted to 15 % of the simultaneous upward fluxes and to ~7.6 % of the total (upward) effluxes during the 3-month study. The upper 5 cm soil layer contributed to ~50 % of the total soil CO2 efflux. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2012
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