Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/952622
Unidade da Embrapa/Coleção:: Embrapa Pesca e Aquicultura - Artigo em periódico indexado (ALICE)
Data do documento: 11-Mar-2013
Tipo do Material: Artigo em periódico indexado (ALICE)
Autoria: AQUINO, R. F.
SILVA, M. L. N.
FREITAS, D. A. F. de
CURI, N.
AVANZI, J. C.
Informaçães Adicionais: 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.
Edição: 2013
Fonte/Imprenta: Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 37, p. 213-220, 2013.
Idioma: en
Palavras-chave: Erodibilidade do solo
Erosividade da chuva
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
Thesagro: Chuva
Erosão hídrica
Solo
Energia cinética
NAL Thesaurus: Rain
Water erosion
Kinetics
Ano de Publicação: 2013
Aparece nas coleções:Artigo em periódico indexado (CNPASA)

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