Influence of Waiting Time after Insertion of Base Chamber into Soil on Produced Greenhouse Gas Fluxes

The soil chamber technique is most commonly used for measuring gas exchange between soil surfaces and the atmosphere, to understand regulatory processes relevant to determine the greenhouse gas (GHG) emissions from soils and to improve the emissions inventory of agricultural systems. The chambers ar...

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Autores principales:	Muñoz,Cristina, Saggar,Surinder, Berben,Peter, Giltrap,Donna, Jha,Neha
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2011
Materias:	Nitrous oxide methane agricultural soil soil biological processes gases monitoring
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400017
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spelling	oai:scielo:S0718-583920110004000172018-10-01Influence of Waiting Time after Insertion of Base Chamber into Soil on Produced Greenhouse Gas FluxesMuñoz,CristinaSaggar,SurinderBerben,PeterGiltrap,DonnaJha,Neha Nitrous oxide methane agricultural soil soil biological processes gases monitoring The soil chamber technique is most commonly used for measuring gas exchange between soil surfaces and the atmosphere, to understand regulatory processes relevant to determine the greenhouse gas (GHG) emissions from soils and to improve the emissions inventory of agricultural systems. The chambers are inserted into the soil to avoid the lateral diffusion of the gases. However, soil disturbance caused by chamber insertion causes in degassing and can result in erroneous flux data from measurements made immediately following chamber insertion. Here we assess the effect of soil disturbance associated with the insertion of the chambers on nitrous oxide (N2O) and methane (CH4) fluxes with and without N fertilization, from a New Zealand pasture soil. We collected gas samples from the chambers at 0, 2, 4, 24, 96 and 168 h after chambers insertion. Our results show elevated levels of N2O inside the chambers (1.7 fold those of atmospheric concentrations outside the chambers) and greater fluxes within the first 4 h of installation compared to the values observed at 24 h and later; and negative CH4 flux in the same time period, but near to zero after 24 h. Our results suggest that for accurate measurement of gas fluxes, measurements should be taken after 24 h of chambers installation to avoid the degassing effect.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.71 n.4 20112011-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400017en10.4067/S0718-58392011000400017
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nitrous oxide methane agricultural soil soil biological processes gases monitoring
spellingShingle	Nitrous oxide methane agricultural soil soil biological processes gases monitoring Muñoz,Cristina Saggar,Surinder Berben,Peter Giltrap,Donna Jha,Neha Influence of Waiting Time after Insertion of Base Chamber into Soil on Produced Greenhouse Gas Fluxes
description	The soil chamber technique is most commonly used for measuring gas exchange between soil surfaces and the atmosphere, to understand regulatory processes relevant to determine the greenhouse gas (GHG) emissions from soils and to improve the emissions inventory of agricultural systems. The chambers are inserted into the soil to avoid the lateral diffusion of the gases. However, soil disturbance caused by chamber insertion causes in degassing and can result in erroneous flux data from measurements made immediately following chamber insertion. Here we assess the effect of soil disturbance associated with the insertion of the chambers on nitrous oxide (N2O) and methane (CH4) fluxes with and without N fertilization, from a New Zealand pasture soil. We collected gas samples from the chambers at 0, 2, 4, 24, 96 and 168 h after chambers insertion. Our results show elevated levels of N2O inside the chambers (1.7 fold those of atmospheric concentrations outside the chambers) and greater fluxes within the first 4 h of installation compared to the values observed at 24 h and later; and negative CH4 flux in the same time period, but near to zero after 24 h. Our results suggest that for accurate measurement of gas fluxes, measurements should be taken after 24 h of chambers installation to avoid the degassing effect.
author	Muñoz,Cristina Saggar,Surinder Berben,Peter Giltrap,Donna Jha,Neha
author_facet	Muñoz,Cristina Saggar,Surinder Berben,Peter Giltrap,Donna Jha,Neha
author_sort	Muñoz,Cristina
title	Influence of Waiting Time after Insertion of Base Chamber into Soil on Produced Greenhouse Gas Fluxes
title_short	Influence of Waiting Time after Insertion of Base Chamber into Soil on Produced Greenhouse Gas Fluxes
title_full	Influence of Waiting Time after Insertion of Base Chamber into Soil on Produced Greenhouse Gas Fluxes
title_fullStr	Influence of Waiting Time after Insertion of Base Chamber into Soil on Produced Greenhouse Gas Fluxes
title_full_unstemmed	Influence of Waiting Time after Insertion of Base Chamber into Soil on Produced Greenhouse Gas Fluxes
title_sort	influence of waiting time after insertion of base chamber into soil on produced greenhouse gas fluxes
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400017
work_keys_str_mv	AT munozcristina influenceofwaitingtimeafterinsertionofbasechamberintosoilonproducedgreenhousegasfluxes AT saggarsurinder influenceofwaitingtimeafterinsertionofbasechamberintosoilonproducedgreenhousegasfluxes AT berbenpeter influenceofwaitingtimeafterinsertionofbasechamberintosoilonproducedgreenhousegasfluxes AT giltrapdonna influenceofwaitingtimeafterinsertionofbasechamberintosoilonproducedgreenhousegasfluxes AT jhaneha influenceofwaitingtimeafterinsertionofbasechamberintosoilonproducedgreenhousegasfluxes
_version_	1714205303875043328

Influence of Waiting Time after Insertion of Base Chamber into Soil on Produced Greenhouse Gas Fluxes

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