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1. | | AQUINO, R. F.; SILVA, M. L. N.; FREITAS, D. A. F. de; CURI, N.; AVANZI, J. C. Soil losses from typic cambisols and red latosol as related to three erosive rainfall patterns. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 37, p. 213-220, 2013. Biblioteca(s): Embrapa Pesca e Aquicultura. |
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
Data corrente: |
11/03/2013 |
Data da última atualização: |
14/10/2013 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
AQUINO, R. F.; SILVA, M. L. N.; FREITAS, D. A. F. de; CURI, N.; AVANZI, J. C. |
Afiliação: |
REGIMEIRE FREITAS AQUINO, INSTITUTO FEDERAL DE EDUCAÇÃO, São João Del Rei, MG; MARX LEANDRO NAVES SILVA, UFLA; DIEGO ANTONIO FRANÇA DE FREITAS, UFLA; NILTON CURI, UFLA; JUNIOR CESAR AVANZI, CNPASA. |
Título: |
Soil losses from typic cambisols and red latosol as related to three erosive rainfall patterns. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 37, p. 213-220, 2013. |
Idioma: |
Inglês |
Conteúdo: |
Rainfall erosivity is one of the main factors related to water erosion in the tropics. This work focused on relating soil loss from a typic dystrophic Tb Haplic Cambisol (CXbd) and a typic dystrophic Red Latosol (LVdf) to different patterns of natural erosive rainfall. The experimental plots of approximately 26 m2 (3 x 8.67 m) consisted of a CXbd area with a 0.15 m m-1 slope and a LVdf area with 0.12 m m-1 slope, both delimited by galvanized plates. Drainpipes were installed at the lower part of these plots to collect runoff, interconnected with a Geib or multislot divisor. To calculate erosivity (EI30), rainfall data, recorded continuously at a weather station in Lavras, were used. The data of erosive rainfall events were measured (10 mm precipitation intervals, accuracy 0.2 mm, 24 h period, 20 min intervals), characterized as rainfall events with more than 10 mm precipitation, maximum intensity > 24 mm h-1 within 15 min, or kinetic energy > 3.6 MJ, which were used in this study to calculate the rainfall erosivity parameter, were classified according to the moment of peak precipitation intensity in advanced, intermediate and delayed patterns. Among the 139 erosive rainfall events with CXbd soil loss, 60 % were attributed to the advanced pattern, with a loss of 415.9 Mg ha-1, and total losses of 776.0 Mg ha-1. As for the LVdf, of the 93 erosive rainfall events with soil loss, 58 % were listed in the advanced pattern, with 37.8 Mg ha-1 soil loss and 50.9 Mg ha-1 of total soil loss. The greatest soil losses were observed in the advanced rain pattern, especially for the CXbd. From the Cambisol, the soil loss per rainfall event was greatest for the advanced pattern, being influenced by the low soil permeability MenosRainfall erosivity is one of the main factors related to water erosion in the tropics. This work focused on relating soil loss from a typic dystrophic Tb Haplic Cambisol (CXbd) and a typic dystrophic Red Latosol (LVdf) to different patterns of natural erosive rainfall. The experimental plots of approximately 26 m2 (3 x 8.67 m) consisted of a CXbd area with a 0.15 m m-1 slope and a LVdf area with 0.12 m m-1 slope, both delimited by galvanized plates. Drainpipes were installed at the lower part of these plots to collect runoff, interconnected with a Geib or multislot divisor. To calculate erosivity (EI30), rainfall data, recorded continuously at a weather station in Lavras, were used. The data of erosive rainfall events were measured (10 mm precipitation intervals, accuracy 0.2 mm, 24 h period, 20 min intervals), characterized as rainfall events with more than 10 mm precipitation, maximum intensity > 24 mm h-1 within 15 min, or kinetic energy > 3.6 MJ, which were used in this study to calculate the rainfall erosivity parameter, were classified according to the moment of peak precipitation intensity in advanced, intermediate and delayed patterns. Among the 139 erosive rainfall events with CXbd soil loss, 60 % were attributed to the advanced pattern, with a loss of 415.9 Mg ha-1, and total losses of 776.0 Mg ha-1. As for the LVdf, of the 93 erosive rainfall events with soil loss, 58 % were listed in the advanced pattern, with 37.8 Mg ha-1 soil loss and 50.9 Mg ha-1 of total soil... Mostrar Tudo |
Palavras-Chave: |
Erodibilidade do solo; Erosividade da chuva. |
Thesagro: |
Chuva; Energia cinética; Erosão hídrica; Solo. |
Thesaurus NAL: |
Kinetics; Rain; Water erosion. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/78685/1/rbcs.pdf
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Marc: |
LEADER 02544naa a2200277 a 4500 001 1952622 005 2013-10-14 008 2013 bl uuuu u00u1 u #d 100 1 $aAQUINO, R. F. 245 $aSoil losses from typic cambisols and red latosol as related to three erosive rainfall patterns.$h[electronic resource] 260 $c2013 520 $aRainfall erosivity is one of the main factors related to water erosion in the tropics. This work focused on relating soil loss from a typic dystrophic Tb Haplic Cambisol (CXbd) and a typic dystrophic Red Latosol (LVdf) to different patterns of natural erosive rainfall. The experimental plots of approximately 26 m2 (3 x 8.67 m) consisted of a CXbd area with a 0.15 m m-1 slope and a LVdf area with 0.12 m m-1 slope, both delimited by galvanized plates. Drainpipes were installed at the lower part of these plots to collect runoff, interconnected with a Geib or multislot divisor. To calculate erosivity (EI30), rainfall data, recorded continuously at a weather station in Lavras, were used. The data of erosive rainfall events were measured (10 mm precipitation intervals, accuracy 0.2 mm, 24 h period, 20 min intervals), characterized as rainfall events with more than 10 mm precipitation, maximum intensity > 24 mm h-1 within 15 min, or kinetic energy > 3.6 MJ, which were used in this study to calculate the rainfall erosivity parameter, were classified according to the moment of peak precipitation intensity in advanced, intermediate and delayed patterns. Among the 139 erosive rainfall events with CXbd soil loss, 60 % were attributed to the advanced pattern, with a loss of 415.9 Mg ha-1, and total losses of 776.0 Mg ha-1. As for the LVdf, of the 93 erosive rainfall events with soil loss, 58 % were listed in the advanced pattern, with 37.8 Mg ha-1 soil loss and 50.9 Mg ha-1 of total soil loss. The greatest soil losses were observed in the advanced rain pattern, especially for the CXbd. From the Cambisol, the soil loss per rainfall event was greatest for the advanced pattern, being influenced by the low soil permeability 650 $aKinetics 650 $aRain 650 $aWater erosion 650 $aChuva 650 $aEnergia cinética 650 $aErosão hídrica 650 $aSolo 653 $aErodibilidade do solo 653 $aErosividade da chuva 700 1 $aSILVA, M. L. N. 700 1 $aFREITAS, D. A. F. de 700 1 $aCURI, N. 700 1 $aAVANZI, J. C. 773 $tRevista Brasileira de Ciência do Solo, Viçosa, MG$gv. 37, p. 213-220, 2013.
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Embrapa Pesca e Aquicultura (CNPASA) |
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