N2o emissions from a cultivated mollisol optimal time of day for sampling and the role of soil temperature
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 Arg...
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| Acceso en línea: | http://ri.agro.uba.ar/files/download/articulo/2012Cosentino.pdf LINK AL EDITOR |
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| 245 | 1 | 0 | |a N2o emissions from a cultivated mollisol |b optimal time of day for sampling and the role of soil temperature |
| 246 | 1 | 0 | |a Emissões de N2o de um chernossolo cultivado |
| 520 | |a 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. | ||
| 653 | 0 | |a CLIMATE CHANGE | |
| 653 | 0 | |a GHG SAMPLING | |
| 653 | 0 | |a SOIL N2O FLUXES | |
| 700 | 1 | |9 38015 |a Cosentino, Vanina Rosa Noemí | |
| 700 | 1 | |9 33912 |a Fernández, Patricia Lilia | |
| 700 | 1 | |9 57685 |a Aureggi, Santiago Andrés Figueiro | |
| 700 | 1 | |9 9839 |a Taboada, Miguel Angel | |
| 773 | |t Revista Brasileira de Ciencia do Solo |g Vol.36, no.6 (2012), p.1814-1819 | ||
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| 900 | |a ^tN2o emissions from a cultivated Mollisol^soptimal time of day for sampling and the role of soil temperature | ||
| 900 | |a ^tEmissões de N2o de um chernossolo cultivado^so tempo ideal do dia para amostragem e papel da temperatura do solo | ||
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| 900 | |a ^aCosentino^bV.R.N.^tFacultad de AgronomÃa, Universidad de Buenos Aires, Avenida San MartÃn 4453, C1417DSE Buenos Aires, Argentina | ||
| 900 | |a ^aFernandez^bP.L.^tFacultad de AgronomÃa, Universidad de Buenos Aires, Soils Institute CIRN, INTA Castelar, Argentina | ||
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| 900 | |a CLIMATE CHANGE | ||
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| 900 | |a SOIL N2O FLUXES | ||
| 900 | |a 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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