N2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature

N2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature

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The correct use of closed field chambers to determine N2O emissions requires defining the time of day that best represents the daily mean N2O flux. A short-term field experiment was carried out on a Mollisol soil, on which annual crops were grown under no-till management in the Pampa Ondulada of Argentina. The N2O emission rates were measured every 3 h for three consecutive days. Fluxes ranged from 62.58 to 145.99 ug N-N2O m-2 h-1 [average of five field chambers] and were negatively related [R2 equal 0.34, p less than 0.01] to topsoil temperature [14 - 20 oC]. N2O emission rates measured between 9:00 and 12:00 am presented a high relationship to daily mean N2O flux [R2 equal 0.87, p less than 0.01], showing that, in the study region, sampling in the mornings is preferable for GHG.

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Main Authors: Cosentino, Vanina Rosa Noemí, Fernández, Patricia Lilia, Aureggi, Santiago Andrés Figueiro, Taboada, Miguel Angel
Format: Texto biblioteca
Language:eng
Subjects:CLIMATE CHANGE, GHG SAMPLING, SOIL N2O FLUXES,
Online Access:http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=46540
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spelling KOHA-OAI-AGRO:465402022-09-20T13:07:38Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=46540AAGN2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperatureCosentino, Vanina Rosa NoemíFernández, Patricia LiliaAureggi, Santiago Andrés FigueiroTaboada, Miguel Angeltextengapplication/pdfThe correct use of closed field chambers to determine N2O emissions requires defining the time of day that best represents the daily mean N2O flux. A short-term field experiment was carried out on a Mollisol soil, on which annual crops were grown under no-till management in the Pampa Ondulada of Argentina. The N2O emission rates were measured every 3 h for three consecutive days. Fluxes ranged from 62.58 to 145.99 ug N-N2O m-2 h-1 [average of five field chambers] and were negatively related [R2 equal 0.34, p less than 0.01] to topsoil temperature [14 - 20 oC]. N2O emission rates measured between 9:00 and 12:00 am presented a high relationship to daily mean N2O flux [R2 equal 0.87, p less than 0.01], showing that, in the study region, sampling in the mornings is preferable for GHG.The correct use of closed field chambers to determine N2O emissions requires defining the time of day that best represents the daily mean N2O flux. A short-term field experiment was carried out on a Mollisol soil, on which annual crops were grown under no-till management in the Pampa Ondulada of Argentina. The N2O emission rates were measured every 3 h for three consecutive days. Fluxes ranged from 62.58 to 145.99 ug N-N2O m-2 h-1 [average of five field chambers] and were negatively related [R2 equal 0.34, p less than 0.01] to topsoil temperature [14 - 20 oC]. N2O emission rates measured between 9:00 and 12:00 am presented a high relationship to daily mean N2O flux [R2 equal 0.87, p less than 0.01], showing that, in the study region, sampling in the mornings is preferable for GHG.CLIMATE CHANGEGHG SAMPLINGSOIL N2O FLUXESRevista Brasileira de Ciencia do Solo
institution UBA FA
collection Koha
country Argentina
countrycode AR
component Bibliográfico
access En linea
En linea
databasecode cat-ceiba
tag biblioteca
region America del Sur
libraryname Biblioteca Central FAUBA
language eng
topic CLIMATE CHANGE
GHG SAMPLING
SOIL N2O FLUXES
CLIMATE CHANGE
GHG SAMPLING
SOIL N2O FLUXES
spellingShingle CLIMATE CHANGE
GHG SAMPLING
SOIL N2O FLUXES
CLIMATE CHANGE
GHG SAMPLING
SOIL N2O FLUXES
Cosentino, Vanina Rosa Noemí
Fernández, Patricia Lilia
Aureggi, Santiago Andrés Figueiro
Taboada, Miguel Angel
N2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature
description The correct use of closed field chambers to determine N2O emissions requires defining the time of day that best represents the daily mean N2O flux. A short-term field experiment was carried out on a Mollisol soil, on which annual crops were grown under no-till management in the Pampa Ondulada of Argentina. The N2O emission rates were measured every 3 h for three consecutive days. Fluxes ranged from 62.58 to 145.99 ug N-N2O m-2 h-1 [average of five field chambers] and were negatively related [R2 equal 0.34, p less than 0.01] to topsoil temperature [14 - 20 oC]. N2O emission rates measured between 9:00 and 12:00 am presented a high relationship to daily mean N2O flux [R2 equal 0.87, p less than 0.01], showing that, in the study region, sampling in the mornings is preferable for GHG.
format Texto
topic_facet CLIMATE CHANGE
GHG SAMPLING
SOIL N2O FLUXES
author Cosentino, Vanina Rosa Noemí
Fernández, Patricia Lilia
Aureggi, Santiago Andrés Figueiro
Taboada, Miguel Angel
author_facet Cosentino, Vanina Rosa Noemí
Fernández, Patricia Lilia
Aureggi, Santiago Andrés Figueiro
Taboada, Miguel Angel
author_sort Cosentino, Vanina Rosa Noemí
title N2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature
title_short N2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature
title_full N2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature
title_fullStr N2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature
title_full_unstemmed N2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature
title_sort n2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=46540
work_keys_str_mv AT cosentinovaninarosanoemi n2oemissionsfromacultivatedmollisoloptimaltimeofdayforsamplingandtheroleofsoiltemperature
AT fernandezpatricialilia n2oemissionsfromacultivatedmollisoloptimaltimeofdayforsamplingandtheroleofsoiltemperature
AT aureggisantiagoandresfigueiro n2oemissionsfromacultivatedmollisoloptimaltimeofdayforsamplingandtheroleofsoiltemperature
AT taboadamiguelangel n2oemissionsfromacultivatedmollisoloptimaltimeofdayforsamplingandtheroleofsoiltemperature
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