Data/hora: 08/06/2024 05:44:31

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	15/02/1995	
Data da última atualização: 	06/04/2017	
Autoria: 	ROBERTSON, G. P.; TIEDJE, J. M.	
Título: 	Nitrous oxide sources in aerobic soils: Nitrification, denitrification and other biological processes.	
Ano de publicação: 	1987	
Fonte/Imprenta: 	Soil Biology Biochemistry, v.19, n.2, p.187-193, 1987.	
Idioma: 	Inglês	
Conteúdo: 	Nitrous oxide (N2O) production in aerobic, intac soil cores collected from two forest sites was partitioned into different sources of N2O by subjecting soils to specific inhibitiors during short-term incubations. We used acetylene (10 Pa) to selectively inhibit N2O production by nitrifiers, 100 kPa (100% v/v)O2 to inhibit N2O production by denitrifiers and sterilized soil to evaluate chemical sources of N2O. Individual soil cores were incubated in a reciculating atmosphere under air, 100 kPa O2, and air + 10 Pa C2H2 atmosphere for 3-4 under each condition. Rates of N2O production in air ranged from 2.8 to 8.5 ng N g-1h-1 in soils from the Rose Lake site and from 0.1 to 0.94 ng N g-1h-1 in soils from Warren Woods. The importance of specific N2O sources in these soils varied among soil cores within each site. In the recently disturbed, more fertile Rose Lake site nitrifiers and denitrifiers were both important N2O sources, but in many cores a significant portion of the N2O flux was inhibited by neither acetylene nor O2 implying an alternate N2O source.	
Palavras-Chave: 	Denitrificacao; Dinitrification.	
Thesagro: 	Nitrificação; Solo.	
Thesaurus Nal: 	nitrification; soil.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (27725-1) - ADD - SP - PP - SP14099 -  - 14099 - DIS