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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
18/08/2000 |
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Data da última atualização: |
18/08/2000 |
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Autoria: |
AMBUS, P.; CLAYTON, H.; ARAH, J. R. M.; SMITH, K. A.; CHRISTENSEN, S. |
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Título: |
Similar N20 flux from soil measured with different chamber techniques. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Atmospheric Environment, v. 27A, n. 1, p. 121-123, 1993. |
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Idioma: |
Inglês |
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Conteúdo: |
N2O flux from an arable soil was measured using two types of closed chamber and one open chamber system. The results were compared. Average N2O flux from the closed chambers did not depend on chamber design. Fifteen replicate chambers of 0.78 dm2 and four chambers of 49 dm2 gave average fluxes of 0.63 and 0.66 ug N2O-N dm-2h-1, respectively, with a higher variability from the small chmabers (coefficient of variation, CV = 77%) than from the large chambers (CV = 40%). Six open chmabers operating over the same period gave an average N2O flux of 1.16 ug N2O-N dm-2h-1 with CV = 64%. The general agreement between the methods suggests that within the achievable precision, limited by spatial and temporal variability, they are all adequate for measuring N2O flux. |
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Palavras-Chave: |
Gás de Cromatografia. |
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Thesagro: |
Solo. |
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Thesaurus Nal: |
gas chromatography; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01346naa a2200217 a 4500
001 1621179
005 2000-08-18
008 1993 bl --- 0-- u #d
100 1 $aAMBUS, P.
245 $aSimilar N20 flux from soil measured with different chamber techniques.
260 $c1993
520 $aN2O flux from an arable soil was measured using two types of closed chamber and one open chamber system. The results were compared. Average N2O flux from the closed chambers did not depend on chamber design. Fifteen replicate chambers of 0.78 dm2 and four chambers of 49 dm2 gave average fluxes of 0.63 and 0.66 ug N2O-N dm-2h-1, respectively, with a higher variability from the small chmabers (coefficient of variation, CV = 77%) than from the large chambers (CV = 40%). Six open chmabers operating over the same period gave an average N2O flux of 1.16 ug N2O-N dm-2h-1 with CV = 64%. The general agreement between the methods suggests that within the achievable precision, limited by spatial and temporal variability, they are all adequate for measuring N2O flux.
650 $agas chromatography
650 $asoil
650 $aSolo
653 $aGás de Cromatografia
700 1 $aCLAYTON, H.
700 1 $aARAH, J. R. M.
700 1 $aSMITH, K. A.
700 1 $aCHRISTENSEN, S.
773 $tAtmospheric Environment$gv. 27A, n. 1, p. 121-123, 1993.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| 1. |  | HERRERO, M.; THORNTON, P. K.; MASON-D'CROZ, D.; PALMER, J.; BENTON, T. G.; BODIRSKY, B. L.; BOGARD, J. R.; HALL, A.; LEE, B.; NYBORG, K.; PRADHAN, P.; BONNETT, G. D.; BRYAN, B. A.; CAMPBELL, B. M.; CHRISTENSEN, S.; CLARK, M.; COOK, M. T.; BOER, I. J. M. de; DOWNS, C.; DIZYEE, K.; FOLBERTH, C.; GODDE, C. M.; GERBER, J. S.; GRUNDY, M.; HAVLIK, P.; JARVIS, A.; KING, R.; LOBOGUERRERO, A. M.; LOPES, M. A.; MCLNTYRE, C. L.; NAYLOR, R.; NAVARRO, J.; OBERSTEINER, M.; PARODI, A.; PEOPLES, M. B.; PIKAAR, I.; POPP, A.; ROCKSTROM, J.; ROBERTSON, M. J.; SMITH, P.; STEHFEST, E.; SWAIN, S. M.; VALIN, H.; VAN WIJK, M.; VAN ZANTEN, H. H. E.; VERMEULEN, S.; VERVOORT, J.; WEST, P. C. Innovation can accelerate the transition towards a sustainable food system. Nature Food, v. 1, p. 266-272, May 2020. Perspective.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 5 |
| Biblioteca(s): Embrapa Agroenergia. |
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