Spatial and Temporal Modeling of Water Erosion in Dystrophic Red Latosol (Oxisol) Used for Farming and Cattle Raising Activities in a Sub-Basin in the South of Minas Gerais

Olivetti, Diogo; Mincato, Ronaldo Luiz; Ayer, Joaquim Ernesto Bernardes; Silva, Marx Leandro Naves; Curi, Nilton

doi:10.1590/s1413-70542015000100007

Cited by 23 publications

(25 citation statements)

References 17 publications

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“…The R factor (6,500 MJ mm ha -1 h -1 year -1 ) was determined for southern MG by Aquino et al (2012) based on the Fournier equation with the kriging interpolation method adjusted for Lavras, MG and is used in studies in the region OLIVETTI et al, 2015). The C and P values were obtained from Bertol et al (2001) for no-till corn/beans (C = 0.0271; P = 0.01), Prochnow et al (2005) for coffee with a spacing of 3.0 × 0.5 m under a contour farming system (C = 0.1354; P = 0.50) and Silva et al (2016) for eucalyptus under downhill planting system (C = 0.1240; P = 1.00) and preserved native forest (C = 0.0150; P = 0.01).…”

Section: Rusle Model Parametersmentioning

confidence: 99%

Modeling of water erosion by the erosion potential method in a pilot subbasin in southern Minas Gerais

Tavares

Spalević

Avanzi

et al. 2019

SCA

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Soil losses due to water erosion threaten the sustainability of agriculture and the food security of current and future generations. This study estimated potential soil losses and sediment production under different types of land uses in a subbasin in the Municipality of Alfenas, southern Minas Gerais, southeastern Brazil. The objective of this research was to evaluate the application of the Potential Erosion Method by the Intensity of Erosion and Drainage program and correlate the findings with the results obtained by the Revised Universal Soil Loss Equation as well as geoprocessing techniques and statistical analyses. In the Potential Erosion Method, the coefficient indicating the mean erosion intensity was 0.37, which corresponded to erosion category IV and indicated weak laminar erosion processes, and the total soil loss was 649.31 Mg year -1 and the mean was 1.46 Mg ha -1 year -1 . These results were consistent in magnitude with those obtained in the Revised Universal Soil Loss Equation, which estimated a mean soil loss of 1.52 Mg ha -1 year -1 and a total soil loss of 668.26 Mg year -1 . The Potential Erosion Method suggests that 1.5% of the area presents potential soil losses above the soil loss tolerance limit, which ranged from 5.19 to 5.90 Mg ha -1 year -1 , while the Revised Universal Soil Loss Equation indicated that 7.3% of the area has potential soil losses above the limit. The maximum sediment discharge was 60 Mg year -1 , meaning that 9.3% of the total soil loss reached the depositional areas of the river plains or watercourses. The Potential Erosion Method was efficient in the evaluation of water erosion in tropical soils, and the results were consistent with models widely employed in the estimation of soil losses. Thus, the model can support the evaluation of soil losses in Brazil and is a robust tool for evaluating the sustainability of agricultural activities.

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Section: Rusle Model Parametersmentioning

confidence: 99%

Modeling of water erosion by the erosion potential method in a pilot subbasin in southern Minas Gerais

Tavares

Spalević

Avanzi

et al. 2019

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“…A taxa média de erosão do solo avançou de 2,4 para 2,6 Mg ha -1 ano -1 em Latossolos do Cerrado no Estado de Minas Gerais, segundo estimativas que consideraram as alterações de uso do solo no período entre 1986 e 2011 (Olivetti et al, 2015). Apesar de reconhecidos como solos de baixa erodibilidade, os Latossolos cultivados apresentaram perdas de solo de até 67,24 Mg ha -1 ano -1 em condições de ausência de cobertura vegetal, cinco vezes acima do limite máximo de tolerância, 12,7 Mg ha -1 ano -1 (Carvalho et al, 2007).…”

Section: Introductionunclassified

Erosão hídrica em solos cultivados e sob mata ciliar

Momoli

Cooper

2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi identificar atributos dos solos e de sedimentos como instrumentos para determinação dos impactos decorrentes da erosão hídrica, bem como propor redução do sobreúso dos solos no Cerrado goiano. Solos e sedimentos da mata ciliar do Córrego Ponte Nova, bem como do cultivo de soja a montante foram avaliados por micromorfometria quanto à morfologia, à granulometria e à porosidade. Na encosta cultivada, o solo foi classificado como Latossolo Vermelho distroférrico, e, na mata ciliar de vereda, como Plintossolo Pétrico Concrecionário êutrico e Gleissolo Melânico Tb distrófico típico. Solos e sedimentos foram predominantemente argilosos, e a fração argila encontrava-se naturalmente agregada em partículas maiores, de tamanho silte e areia. Análises morfológicas, granulométricas e de porosidade, por micromorfometria, possibilitaram distinguir os sedimentos dos solos soterrados, pela diferenciação de coloração, textura e porosidade. Elevada concentração de agregados de argila tamanho areia no Gleissolo Melânico sugere a remoção seletiva de partículas finas, o que indica erosão no solo sob a mata ciliar. A elevada deposição de sedimentos sobre os solos da mata ciliar compromete a função de filtro do solo e também a perpetuidade e a regeneração da floresta por causa do soterramento de sementes e plântulas.Termos para indexação: erosão, impactos ambientais, micromorfometria, planejamento agrícola, sedimentos. Water erosion on cultivated soil and soil under riparian forestAbstract -The objective of this work was to identify attributes of soil and of sediments as a tool to determine the impacts from water erosion, as well as to propose reducing the overuse of the soil in the Cerrado, in the state of Goiás, Brazil. Soils and sediments from the riparian forest of the Ponte Nova Stream and from upstream soybean crop areas were evaluated by micromorphometrics as to morphology, particle size, and porosity. Rhodic Oxisol was present in the cultivated hillside, and Petroferric Oxisol and Typic Eutraquox, in the riparian forest path. Soils and sediments were predominantly clayed, and the clay fraction was naturally aggregated into larger particles of silt and sand sizes. Analyses of morphological atributes, particle size, and porosity -by micromorphometrics -allowed to distinguish the sediment of buried soils by color, texture, and porosity differentiation. The high concentration of sandy-sized clay aggregates in Typic Eutraquox suggests the selective removal of fine particles, indicating soil erosion under the riparian forest. The high sediment deposition on the riparian forest soils is a risk to the soil filter function, and also to the perpetuity and regeneration of the forest because of the burial of seeds and seedlings.

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“…A TPS representa a perda de solo máxima tolerável para manter a capacidade produtiva do solo e no Brasil é calculada, principalmente, pelo método de Bertol e Almeida (2000), por considerar no cálculo um maior número de atributos do solo de fácil obtenção (CÂNDIDO et al, 2014;OLIVETTI et al, 2015).…”

Section: Métodos Empíricos Como a Revised Universal Soil Loss Equationunclassified

Modelos de Erosão Hídrica e Tolerância das Perdas de Solo em Latossolos Distróficos no Sul de Minas Gerais

et al. 2017

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Diferentes métodos de cálculo das perdas de solo por erosão hídrica foram comparados com a Tolerância de Perda de Solo em Latossolos tropicais. Foram utilizados o Método de Erosão Potencial e a Equação Universal de Perda de Solo Revisada. O Método de Erosão Potencial foi calculado no aplicativo Intensidade de Erosão e Escoamento e obteve uma média de perdas de solo de 1,46 Mg ha-1 ano-1 com descarga máxima de 649,31 Mg ano-1. Já pela Equação Universal de Perda de Solo Revisada, foi obtida uma média de perda de solo de 1,52 Mg ha-1 ano-1, com descarga máxima de 668,26 Mg ano-1. As perdas de solo calculadas pelos dois métodos foram similares e ficaram aquém do limite de Tolerância de Perda de Solo, que variou de 5,19 a 5,90 Mg ha-1 ano-1 e validam a aplicação do Método da Erosão Potencial em solos tropicais do sul de Minas Gerais.

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Spatial and Temporal Modeling of Water Erosion in Dystrophic Red Latosol (Oxisol) Used for Farming and Cattle Raising Activities in a Sub-Basin in the South of Minas Gerais

Cited by 23 publications

References 17 publications

Modeling of water erosion by the erosion potential method in a pilot subbasin in southern Minas Gerais

Modeling of water erosion by the erosion potential method in a pilot subbasin in southern Minas Gerais

Erosão hídrica em solos cultivados e sob mata ciliar

Modelos de Erosão Hídrica e Tolerância das Perdas de Solo em Latossolos Distróficos no Sul de Minas Gerais

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