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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
21/11/2012 |
Data da última atualização: |
02/03/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SAGGIN JUNIOR, O. J.; FERREIRA, D. A.; CARNEIRO, M. A. C. |
Afiliação: |
ORIVALDO JOSE SAGGIN JUNIOR, CNPAB; CNPq e CAPES; UFG. |
Título: |
Fungos micorrízicos arbusculares em um latossolo vermelho sob manejo e usos no cerrado. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 36, p. 51-61, 2012. |
Idioma: |
Português |
Palavras-Chave: |
Fungos. |
Thesagro: |
Cerrado; Latossolo. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00504naa a2200169 a 4500 001 1940165 005 2015-03-02 008 2012 bl uuuu u00u1 u #d 100 1 $aSAGGIN JUNIOR, O. J. 245 $aFungos micorrízicos arbusculares em um latossolo vermelho sob manejo e usos no cerrado. 260 $c2012 650 $aCerrado 650 $aLatossolo 653 $aFungos 700 1 $aFERREIRA, D. A. 700 1 $aCARNEIRO, M. A. C. 773 $tRevista Brasileira de Ciência do Solo$gv. 36, p. 51-61, 2012.
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| Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
07/12/2020 |
Data da última atualização: |
13/04/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 3 |
Autoria: |
MACEDO, P. S. M.; OLIVEIRA, P. T. S.; ANTUNES, M. A. H.; DURIGON, V. L.; FIDALGO, E. C. C.; CARVALHO, D. F. de. |
Afiliação: |
PIETRO SANCHEZ MENEZES MACEDO, UFRRJ; PAULO TARSO SANCHES OLIVEIRA, UFMS; MAURO ANTONIO HOMEM ANTUNES, UFRRJ; VALDEMIR LUCIO DURIGON, UFRRJ; ELAINE CRISTINA CARDOSO FIDALGO, CNPS; DANIEL FONSECA DE CARVALHO, UFRRJ. |
Título: |
New approach for obtaining the C-factor of RUSLE considering the seasonal effect of rainfalls on vegetation cover. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
International Soil and Water Conservation Research, v. 9, n. 2, p. 207-216, Jun. 2021. |
DOI: |
https://doi.org/10.1016/j.iswcr.2020.12.001 |
Idioma: |
Inglês |
Conteúdo: |
We present a new approach for calculating the C-factor of RUSLE considering the effect of low-reflectance vegetation cover areas on the reduction of the effects on erosion caused by rainfall seasonality. For this, we propose the coefficients Cr2 (rescaled 2) and C-PC (Precipitation Correction), which represent the C-factor, and an adaptation in NDVI calculation, according to the seasonality of precipitation (NDVI-PC). The Cr2 factor is used when there is no seasonal effect of rainfall on vegetation, while the C-PC factor is calculated for localities under the influence of seasonality, from NDVI-PC. The proposed approaches were tested using different satellites images in the Palmares-Ribeirão do Saco watershed, Rio de Janeiro, Brazil. The values of Cr2 and C-PC factors were compared to the Cr factor (rescaled) and to mean values from the literature for different land covers. Our results indicated that the Cr2 factor represents an improvement in accuracy in relation to Cr by considering specific values of the studied area to normalize the data without generalizations. Furthermore, the C-PC factor is able to simulate the effect of seasonality, providing more realistics values of soil loss by the RUSLE as a function of the proportion of area affected by the rainfall seasonality obtained from NDVI-PC. We conclude that both Cr2 and C-PC factors generate values similar of the C-factor observed in the literature, and therefore are able to provide better soil loss estimation than that using the Cr factor. MenosWe present a new approach for calculating the C-factor of RUSLE considering the effect of low-reflectance vegetation cover areas on the reduction of the effects on erosion caused by rainfall seasonality. For this, we propose the coefficients Cr2 (rescaled 2) and C-PC (Precipitation Correction), which represent the C-factor, and an adaptation in NDVI calculation, according to the seasonality of precipitation (NDVI-PC). The Cr2 factor is used when there is no seasonal effect of rainfall on vegetation, while the C-PC factor is calculated for localities under the influence of seasonality, from NDVI-PC. The proposed approaches were tested using different satellites images in the Palmares-Ribeirão do Saco watershed, Rio de Janeiro, Brazil. The values of Cr2 and C-PC factors were compared to the Cr factor (rescaled) and to mean values from the literature for different land covers. Our results indicated that the Cr2 factor represents an improvement in accuracy in relation to Cr by considering specific values of the studied area to normalize the data without generalizations. Furthermore, the C-PC factor is able to simulate the effect of seasonality, providing more realistics values of soil loss by the RUSLE as a function of the proportion of area affected by the rainfall seasonality obtained from NDVI-PC. We conclude that both Cr2 and C-PC factors generate values similar of the C-factor observed in the literature, and therefore are able to provide better soil loss estimation than tha... Mostrar Tudo |
Palavras-Chave: |
Cobertura da Terra; NDVI. |
Thesagro: |
Erosão do Solo; Manejo do Solo; Vegetação. |
Thesaurus NAL: |
Land cover; Soil erosion; Soil management; Vegetation. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02468naa a2200301 a 4500 001 2127717 005 2021-04-13 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.iswcr.2020.12.001$2DOI 100 1 $aMACEDO, P. S. M. 245 $aNew approach for obtaining the C-factor of RUSLE considering the seasonal effect of rainfalls on vegetation cover.$h[electronic resource] 260 $c2021 520 $aWe present a new approach for calculating the C-factor of RUSLE considering the effect of low-reflectance vegetation cover areas on the reduction of the effects on erosion caused by rainfall seasonality. For this, we propose the coefficients Cr2 (rescaled 2) and C-PC (Precipitation Correction), which represent the C-factor, and an adaptation in NDVI calculation, according to the seasonality of precipitation (NDVI-PC). The Cr2 factor is used when there is no seasonal effect of rainfall on vegetation, while the C-PC factor is calculated for localities under the influence of seasonality, from NDVI-PC. The proposed approaches were tested using different satellites images in the Palmares-Ribeirão do Saco watershed, Rio de Janeiro, Brazil. The values of Cr2 and C-PC factors were compared to the Cr factor (rescaled) and to mean values from the literature for different land covers. Our results indicated that the Cr2 factor represents an improvement in accuracy in relation to Cr by considering specific values of the studied area to normalize the data without generalizations. Furthermore, the C-PC factor is able to simulate the effect of seasonality, providing more realistics values of soil loss by the RUSLE as a function of the proportion of area affected by the rainfall seasonality obtained from NDVI-PC. We conclude that both Cr2 and C-PC factors generate values similar of the C-factor observed in the literature, and therefore are able to provide better soil loss estimation than that using the Cr factor. 650 $aLand cover 650 $aSoil erosion 650 $aSoil management 650 $aVegetation 650 $aErosão do Solo 650 $aManejo do Solo 650 $aVegetação 653 $aCobertura da Terra 653 $aNDVI 700 1 $aOLIVEIRA, P. T. S. 700 1 $aANTUNES, M. A. H. 700 1 $aDURIGON, V. L. 700 1 $aFIDALGO, E. C. C. 700 1 $aCARVALHO, D. F. de 773 $tInternational Soil and Water Conservation Research$gv. 9, n. 2, p. 207-216, Jun. 2021.
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