Registro Completo
|
Biblioteca(s): |
Embrapa Meio Ambiente. |
|
Data corrente: |
28/02/2013 |
|
Data da última atualização: |
28/02/2013 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
CABRAL, O. M. R.; ROCHA, H. R. da; GASH, J. H.; LIGO, M. A. V.; TATSCH, J. D.; FREITAS, H. C. de; BRASILIO, E. |
|
Afiliação: |
OSVALDO MACHADO RODRIGUES CABRAL, CNPMA; HUMBERTO R. ROCHA, USP; JOHN H. GASH, Centre for Ecology and Hydrology; MARCOS ANTONIO VIEIRA LIGO, CNPMA; J O N A T A N D . T A T S C H, USP; H E L B E R C . F R E I T A S, USP; E M I L I A B R A S I L I O, USP. |
|
Título: |
Water use in a sugarcane plantation. |
|
Ano de publicação: |
2012 |
|
Fonte/Imprenta: |
Global Change Biology. Bioenergy, Oxford, v. 4, p. 555-565, 2012. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: The evapotranspiration (E) from a sugarcane plantation in the southeast Brazil was measured by the eddy-covariance method during two consecutive cycles. These represented the second (393 days) and third year (374 days) re-growth (ratoon). The total E in the first cycle was 829 mm, accounting for 69% of rainfall, whereas in the second cycle, it was 690 mm, despite the total rainfall (1353 mm) being 13% greater. The ratio of E to available energy, the evaporative fraction, exhibited a smaller variation between the first and second cycles: 0.58 and 0.51, respectively. The estimated interception losses were 88 and 90 mm, respectively, accounting for approximately 7% of the total rainfall. The sugarcane yield in the second cycle (61.5 ± 4.0 t ha -¹) was 26% lower than the first cycle, as well as lower than the regional average for the third ratoon (76 t ha -¹). The below average yield was associated with less available soil water at the beginning of the cycle, with the amount of rainfall recorded during the first 120 days of re-growth in the second cycle being 16% of that recorded in the first (203 mm). |
|
Palavras-Chave: |
Rainfall interception. |
|
Thesagro: |
Água; Cana de açúcar; Evapotranspiração. |
|
Thesaurus NAL: |
eddy covariance; Evapotranspiration; Soil water deficit; Sugarcane. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01920naa a2200289 a 4500
001 1951600
005 2013-02-28
008 2012 bl uuuu u00u1 u #d
100 1 $aCABRAL, O. M. R.
245 $aWater use in a sugarcane plantation.$h[electronic resource]
260 $c2012
520 $aAbstract: The evapotranspiration (E) from a sugarcane plantation in the southeast Brazil was measured by the eddy-covariance method during two consecutive cycles. These represented the second (393 days) and third year (374 days) re-growth (ratoon). The total E in the first cycle was 829 mm, accounting for 69% of rainfall, whereas in the second cycle, it was 690 mm, despite the total rainfall (1353 mm) being 13% greater. The ratio of E to available energy, the evaporative fraction, exhibited a smaller variation between the first and second cycles: 0.58 and 0.51, respectively. The estimated interception losses were 88 and 90 mm, respectively, accounting for approximately 7% of the total rainfall. The sugarcane yield in the second cycle (61.5 ± 4.0 t ha -¹) was 26% lower than the first cycle, as well as lower than the regional average for the third ratoon (76 t ha -¹). The below average yield was associated with less available soil water at the beginning of the cycle, with the amount of rainfall recorded during the first 120 days of re-growth in the second cycle being 16% of that recorded in the first (203 mm).
650 $aeddy covariance
650 $aEvapotranspiration
650 $aSoil water deficit
650 $aSugarcane
650 $aÁgua
650 $aCana de açúcar
650 $aEvapotranspiração
653 $aRainfall interception
700 1 $aROCHA, H. R. da
700 1 $aGASH, J. H.
700 1 $aLIGO, M. A. V.
700 1 $aTATSCH, J. D.
700 1 $aFREITAS, H. C. de
700 1 $aBRASILIO, E.
773 $tGlobal Change Biology. Bioenergy, Oxford$gv. 4, p. 555-565, 2012.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
