Carbon fluxes of surfaces vs. ecosystems. Advantages of measuring eddy covariance and soil respiration simultaneously in dry grassland ecosystems

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F11%3A00363711" target="_blank" >RIV/67179843:_____/11:00363711 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5194/bg-8-2523-2011" target="_blank" >http://dx.doi.org/10.5194/bg-8-2523-2011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5194/bg-8-2523-2011" target="_blank" >10.5194/bg-8-2523-2011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Carbon fluxes of surfaces vs. ecosystems. Advantages of measuring eddy covariance and soil respiration simultaneously in dry grassland ecosystems

Popis výsledku v původním jazyce

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 simultaneousupward 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.

Název v anglickém jazyce

Carbon fluxes of surfaces vs. ecosystems. Advantages of measuring eddy covariance and soil respiration simultaneously in dry grassland ecosystems

Popis výsledku anglicky

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 simultaneousupward 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

<a href="/cs/project/ED1.1.00%2F02.0073" target="_blank" >ED1.1.00/02.0073: CzechGlobe ? Centrum pro studium dopadu globální zmeny klimatu</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Biogeosciences

ISSN

1726-4170

e-ISSN

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Svazek periodika

8

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

12

Strana od-do

2523-2534

Kód UT WoS článku

000295375700008

EID výsledku v databázi Scopus

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