Erosão hídrica em um Argissolo Vermelho-Amarelo, sob diferentes padrões de chuva simulada

Oliveira, João Ricardo de Freitas; Pinto, Marinaldo Ferreira; Souza, Wanderley de Jesus; Guerra, J. G. M.; Carvalho, Daniel Fonseca de

doi:10.1590/s1415-43662010000200004

Cited by 22 publications

(20 citation statements)

References 21 publications

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“…These results are mainly attributed to the greater predominance of these patterns in that year, and that it is directly related to erosivity. Several authors have obtained similar results of erosivity in their studies in various regions of Brazil (Machado et al, 2008;Carvalho et al, 2009;Oliveira et al, 2010). Another important point to be analyzed is that while in 2010 erosive intermediate rainfall pattern predominated, differing from 2009, the total erosivity was very similar to that recorded in 2009.…”

Section: Resultssupporting

confidence: 55%

Characteristics of rainfall and erosion under natural conditions of land use in semiarid regions

Lima

Palácio²,

Andrade

et al. 2013

Rev. bras. eng. agríc. ambient.

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The characteristics of rainfall can provide important information for management and land use may also minimize the water erosion problems. This study was carried out to evaluate soil and water loss in erosion plots with different coverage, and the interference of natural rainfall characteristics on these processes. The experiment was carried out during the rainy season in the years of 2009 and 2010, on three erosion plots, each of 20 m 2 , and under different land use conditions: native 'caatinga', thinned 'caatinga' and natural herbaceous cover. The rainfall was classified into three different rainfall patterns, characterized as early, intermediate and late. The predominant rainfall pattern for the two years under study was early rainfall with 47.6%, followed by intermediate and late with 30.5% and 22%, respectively. The smallest soil losses for the entire studied period were recorded for the native 'caatinga' plot, demonstrating the protective effect of vegetation on sediment production. Despite the early rainfall pattern being prevalent in the period of study, this was not the main factor responsible for water and soil loss.Key words: rainfall intensity, erosivity, water erosion Características das chuvas e da erosão sob condições naturais de usos do solo no semiárido RESUMO As características das chuvas podem não apenas fornecer informações importantes no que diz respeito ao uso e manejo do solo, mas também minimizar os problemas causados pela erosão hídrica. Neste sentido, objetivou-se avaliar as perdas de solo e água em parcelas de erosão com diferentes coberturas e a interferência das características das chuvas naturais nesses processos. O experimento foi conduzido durante a estação chuvosa dos anos de 2009 e 2010 em três parcelas de erosão de 20 m², submetidas a diferentes condições de uso do solo: Caatinga nativa, Caatinga raleada e cobertura herbácea natural. As chuvas foram classificadas em três diferentes padrões de precipitação caracterizados como avançado, intermediário e atrasado. O padrão de chuva predominante para os dois anos de estudo foi o avançado, com 47,6% do total de eventos, seguido pelo intermediário e atrasado com 30,5 e 22%, respectivamente. Para todo o período estudado as menores perdas de solo foram registradas na Caatinga nativa caracterizando o efeito protetor da cobertura vegetal quanto à produção de sedimentos. Apesar do padrão de chuva avançada ter sido predominante para o período estudado, este não foi o principal fator responsável pelas perdas de água e solo. Palavras-chave: intensidade das chuvas, erosividade, erosão hídricaRevista Brasileira de Engenharia Agrícola e Ambiental

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Section: Resultssupporting

confidence: 55%

Characteristics of rainfall and erosion under natural conditions of land use in semiarid regions

Lima

Palácio²,

Andrade

et al. 2013

Rev. bras. eng. agríc. ambient.

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“…Soil erosion by water causes enormous damage to life on the planet, by polluting water and reducing the productivity, fertility and sustainability of agricultural systems (Arriaga & Lowery, 2003), and by increasing environmental degradation, with huge implications for economic and social issues (Oliveira et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, Oliveira et al (2010) reinforced the need to evaluate the response of soil classes to different kinds of rainfall, both in terms of precipitation volume and of duration and characteristics of the events.…”

Section: Introductionmentioning

confidence: 99%

Soil losses from typic cambisols and red latosol as related to three erosive rainfall patterns

Aquino

Silva

Freitas

et al. 2013

Rev. Bras. Ciênc. Solo

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SUMMARYRainfall 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 m 2 (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 (EI 30 ), 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.Index terms: rainfall erosivity, water erosion, kinetic energy, soil erodibility.( RESUMO: PERDAS DE SOLO EM CAMBISSOLO E LATOSSOLO VERMELHO, EM RELAÇÃO A TRÊS PADRÕES DE CHUVAS EROSIVAS

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“…Therefore, the rapid erosion of agricultural areas has significantly contributing to desertification of many areas of the Brazilian semiarid region (ONDA; DIETRICH; BOOKER, 2008). These problems are even more noticeable in lands that have steep slopes and altered or absent vegetation cover (OLIVEIRA et al, 2010;RODRIGUES et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Rainfall Characterization and Sedimentological Responses of Watersheds With Different Land Uses to Precipitation in the Semiarid Region of Brazil

et al. 2017

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-The objective of this work was to evaluated the precipitation characteristics (depth, I30 and erosivity) and their effects on sediment production in three watersheds under different managements of land use 35-year regenerating Caatinga (RC), thinned Caatinga (TC), which underwent thinning of trees with diameter smaller than 10 cm; and deforested Caatinga (followed by burning and pasture) (DC). The experimente was conducted in the central, tropical semiarid region of the State of Ceará, Brazil. The precipitation events, surface runoff and sediment production were monitored from 2010 to 2015. The precipitation characteristics were subjected to Pearson's correlation at 1 and 5% of significance and the events that produced sediments in each watershed were hierarchically grouped by hierarchical cluster analysis technique. Two hundred precipitation events were recorded, with 23 (RC), 18 (TC) and 43 (DC) events producing sediments. The use of thinning (TC) decreased the sediment production by 53.5%, while the deforestation, burn and pasture cultivation (DC) increased soil losses by 14%, compared with the RC. The sediment production was greatly correlated with the I30 in the three watersheds, denoting the erosion process great dependence on the precipitation intensity.Keywords: Precipitation. Sediment Production. Watersheds. CARACTERISTICAS DAS CHUVAS E RESPOSTAS SEDIMENTOLOGICAS EM DIFERENTES USOS DO SOLO NO SEMIÁRIDORESUMO -Obejtivou-se com este estudo investigar as caracteristicas das chuvas (altura precipitada, I30 e erosividade) e suas correlações com a produção de sedimentos em três microbacias submetidas aos seguintes manejos: Caatinga em Regeneração (CER) há 35 anos; Caatinga Raleada (CRA) passou pelo raleio das árvores com diâmetro menor que 10 cm; Desmatamento/Queima/Plantio de Pastagem (DQP). A área de estudo é representative de região semiárida tropical e está localizada na parte central do estado do Ceará. Foram monitorados eventos puviométricos, escoamento superficial e produção de sedimentosdos anos de 2010 a 2015.As características das chuvas foram submetidas a correlação de Pearson a nível de 1 e 5 % de significância e os eventos que produziram sedimentos em cada microbacia foram agrupados hierarquicamente pela técnica de Análise de Agrupamento Hierárquico. Ao todo foram registrados 200 eventos pluviométricos dos quais 23, 18 e 43 eventos produziram sedimentos nas microbacias CER, CRA e DQP respectivamente. A adoção do manejos de raleamento reduziu a produção de sedimentos em 53,5 %, enquanto que o DQP promoveu um aumento das perdas de solo em 14 % em relação à CER. A produção de sedimentos expressou uma maior correlação com o I30 para as três microbacias expressando a maior dependência do processo erosive da intensidade das chuvas.Palavras-chave: Precipitação pluviométrica. Produção de sedimentos. Micorbacias.

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Erosão hídrica em um Argissolo Vermelho-Amarelo, sob diferentes padrões de chuva simulada

Cited by 22 publications

References 21 publications

Characteristics of rainfall and erosion under natural conditions of land use in semiarid regions

Characteristics of rainfall and erosion under natural conditions of land use in semiarid regions

Soil losses from typic cambisols and red latosol as related to three erosive rainfall patterns

Rainfall Characterization and Sedimentological Responses of Watersheds With Different Land Uses to Precipitation in the Semiarid Region of Brazil

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