Is it possible to measure CO2 effluxes in an arable ecosystem using chambers without soil frames?
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F13%3A00424052" target="_blank" >RIV/67179843:_____/13:00424052 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Is it possible to measure CO2 effluxes in an arable ecosystem using chambers without soil frames?
Popis výsledku v původním jazyce
The push-in chamber and chambers with alternative gaskets were tested under fi eld conditions in order to estimate the rates of under- or overestimation of the CO2 effl uxes measured with chambers placed directly on a soil surface (without collars). Th eexperiment was conducted on a spring barley fi eld which was harvested just before the measuring campaign. Th e following were tested: 1) a pushed-in chamber with a sharp metal blade installed on the edge of the chamber walls which was inserted to a depth of 1?2 cm to the soil, 2) a chamber with a 10 cm wide and 3 cm high rubber gasket, and 3) a chamber with a 10 cm wide and 2 cm high neoprene gasket. Th e results indicated that the application of the pushed-in chamber led to overestimation of the fl uxes by 55%, while application of chambers with alternative gaskets led to underestimation of the fl uxes by 30?40% due to the leakage of the gas from the chamber headspace through holes beneath the gaskets. Our experiment confi rmed that
Název v anglickém jazyce
Is it possible to measure CO2 effluxes in an arable ecosystem using chambers without soil frames?
Popis výsledku anglicky
The push-in chamber and chambers with alternative gaskets were tested under fi eld conditions in order to estimate the rates of under- or overestimation of the CO2 effl uxes measured with chambers placed directly on a soil surface (without collars). Th eexperiment was conducted on a spring barley fi eld which was harvested just before the measuring campaign. Th e following were tested: 1) a pushed-in chamber with a sharp metal blade installed on the edge of the chamber walls which was inserted to a depth of 1?2 cm to the soil, 2) a chamber with a 10 cm wide and 3 cm high rubber gasket, and 3) a chamber with a 10 cm wide and 2 cm high neoprene gasket. Th e results indicated that the application of the pushed-in chamber led to overestimation of the fl uxes by 55%, while application of chambers with alternative gaskets led to underestimation of the fl uxes by 30?40% due to the leakage of the gas from the chamber headspace through holes beneath the gaskets. Our experiment confi rmed that
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
EH - Ekologie – společenstva
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2013
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Global Change and Resilience: From Impacts to Responses : Proceedings of the 3rd annual Global Change and Resilience Conference
ISBN
978-80-904351-8-6
ISSN
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e-ISSN
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Počet stran výsledku
5
Strana od-do
168-172
Název nakladatele
Global change research centre, Academy of Sciences of the Czech Republic, v. v. i
Místo vydání
Brno
Místo konání akce
Brno
Datum konání akce
22. 5. 2013
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
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