Data/hora: 11/06/2024 07:17:57

Provedor de dados: 	Revista Brasileira de Ciência do Solo	
País: 	Brazil	
Título: 	N2O emissions from a cultivated mollisol: optimal time of day for sampling and the role of soil temperature	
Autores: 	Noemi Cosentino,Vanina Rosa; Fernandez,Patricia Lilia; Figueiro Aureggi,Santiago Andrés; Taboada,Miguel Angel.	
Data: 	2012-12-01	
Ano: 	2012	
Palavras-chave: 	Soil N2O fluxes; Climate change; GHG sampling.	
Resumo: 	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 ∝g N-N2O m-2 h-1 (average of five field chambers) and were negatively related (R² = 0.34, p &lt; 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 = 0.87, p &lt; 0.01), showing that, in the study region, sampling in the mornings is preferable for GHG.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000600015	
Editor: 	Sociedade Brasileira de Ciência do Solo	
Relação: 	10.1590/S0100-06832012000600015	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Ciência do Solo  v.36 n.6 2012	
Fonte: 	info:eu-repo/semantics/openAccess