Soil and water losses in eucalyptus plantation and natural forest and determination of the USLE factors at a pilot sub-basin in Rio Grande do Sul, Brazil

Silva, Bárbara Pereira Christófaro; Silva, Marx Leandro Naves; Batista, Pedro Velloso Gomes; Pontes, Lucas Machado; Araújo, Elias Frank de; Curi, Nilton

doi:10.1590/1413-70542016404013216

Cited by 27 publications

(13 citation statements)

References 30 publications

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“…The C-factor varies, according to the vegetation cover, from 0 to 1, where higher values represent a higher soil degradation due to the impact of rainfall and to the surface runoff (Beskow et al, 2009). This factor was established based on the literature, being 0.0866 for coffee cultivation zones (Prochnow et al, 2005) and 0.015 for forests (Silva et al, 2016).…”

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confidence: 99%

Water erosion modeling by the Erosion Potential Method and the Revised Universal Soil Loss Equation: a comparative analysis

et al. 2020

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Water erosion is the principal degradation process of tropical soils, and its effects can be measured by modeling techniques. Erosion models provide a diagnosis of the soil loss intensity and can support the planning of soil conservation practices. Models with low data requirements, such as the Revised Universal Soil Loss Equation (RUSLE) and, more recently, the Erosion Potential Method (EPM), are mainly applied in Brazil. Thus, the objective of this work was to estimate water erosion soil-loss rates using the EPM and RUSLE models on a tropical subbasin, followed by a comparison of their outcomes. The models’ application considered soil physical parameters, edaphoclimatic conditions of the area, land use, and subbasin management practices. The accuracy of the methods was verified using total transported sediment and water discharge data. We compared the models using Pearson's correlation analyses, considering a 5% of significance. We found a predominance of moderate-intensity erosion with average soil loss of 1.17 and 1.46 Mg ha-1 year-1, measured by EPM and RUSLE, respectively. The EPM model underestimated soil losses by 15.27%, and RUSLE overestimated by 19.08%, indicating a higher percentage of areas with high erosion rates (4.60%). The models presented results with a different order of magnitude, but with significant correlations, indicating that both methods pointed out similar zones of intense and light-erosion rates.

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confidence: 99%

Water erosion modeling by the Erosion Potential Method and the Revised Universal Soil Loss Equation: a comparative analysis

et al. 2020

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“…Entretanto, estes efeitos variam com a idade e composição da floresta (SUN et al, 2018). Guimarães et al (2017) observaram uma redução de 99,98% da erosão em plantio homogêneo de eucalipto quando comparado a um solo sem cobertura vegetal, corroborando Silva et al (2016), que encontraram redução da erosão entre 93 e 99% também em florestas de eucalipto, o que se atribuiu à proteção oferecida pela vegetação contra o efeito da precipitação.…”

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Comportamento físico da precipitação interna em um povoamento de <i>Eucalyptus</i>

Neto

Mello

et al. 2019

Ciênc. Florest.

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A compreensão das características físicas da chuva e sua interação com a paisagem possibilita o desenvolvimento de modelos matemáticos mais condizentes com a realidade além de auxiliar no planejamento eficiente de obras e práticas agrícolas. O objetivo deste estudo foi caracterizar a precipitação interna de um povoamento de Eucalyptus no município de Lavras, Minas Gerais, associado a padrões hidrológicos e potencial erosivo. Para individualização dos eventos de precipitação interna foram adotados os intervalos de 3 e 6 horas entre chuvas. Para cada abordagem foi realizada a classificação do padrão hidrológico da precipitação, incidente e interna, e, associados a estes, as características das chuvas: lâmina precipitada, tempo de duração, energia cinética, intensidades média e máxima, e erosividade. A precipitação interna no povoamento de eucalipto representou 79,2% da precipitação externa. A precipitação interna mostrou-se 36,4% menos erosiva do que a precipitação externa, na qual o padrão avançado foi identificado como predominante na série analisada em ambas as metodologias de individualização dos eventos.

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“…The Universal Soil Loss Equation parameters for different conditions of soil tillage and types have been the object of review in the literature, such as Cogo et al (2003), Mello et al (2003), Castro et al (2011, Schick et al (2014a,b), and Silva et al (2016). The USLE equation has become an important planning tool in the United States, but it needs to be calibrated for local conditions, for example in Brazil and in South America.…”

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Relationship Among Crop Systems, Soil Cover, and Water Erosion on a Typic Hapludox

Lima

Silva

Quinton

et al. 2018

Rev. Bras. Ciênc. Solo

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Several soil conservation practices are used to reduce water erosion and ensure sustainable agriculture. An effective crop management practice is intercropping, in which two or more crops with different architectures and vegetative cycles are grown simultaneously in the same area. We hypothesized that intercropping of corn and jack-bean increases soil cover and reduce soil erosion by water in comparison to monocropping. The objective of this study was to evaluate the effects of different crop systems on soil cover and on soil erosion by water. Soil and water losses from a Typic Hapludox were measured under the following systems: corn cultivation (CO), jack-bean cultivation (JB), intercropping of corn and jack-bean (IC), and bare soil (BS), as a reference for maximum erosion rates. For each crop system, erosion plots with dimensions of 12 × 4 m were set up in the field on a 0.12 m m -1 slope gradient. The experiment was carried out under natural rainfall, over three crop seasons (November to March) from 2011 to 2014. The soil cover index of the systems was monitored during crop growth, and rainfall erosivity for the crop seasons was calculated according to the EI 30 index to interpret soil and water losses. A set of linear mixed models was fitted to relate soil losses to rainfall erosivity, crop systems, and soil cover. The average rainfall erosivity in the study area was 6,132 MJ mm ha -1 h -1 per crop season. The results indicate that water losses are directly related to erosivity and are less influenced by soil cover and cultivation systems than the soil losses. A linear maximum value of the soil cover index was achieved 70 days after sowing. Intercropping exhibited greater soil cover than single crops. Total soil losses from the three seasons display the trend: BS > CO > JB > IC. The best fitted model of the linear mixed models indicates that soil loss responses are strongly correlated with rainfall erosivity and soil cover, which nullified the influence of the crop systems in the model.

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Soil and water losses in eucalyptus plantation and natural forest and determination of the USLE factors at a pilot sub-basin in Rio Grande do Sul, Brazil

Cited by 27 publications

References 30 publications

Water erosion modeling by the Erosion Potential Method and the Revised Universal Soil Loss Equation: a comparative analysis

Water erosion modeling by the Erosion Potential Method and the Revised Universal Soil Loss Equation: a comparative analysis

Comportamento físico da precipitação interna em um povoamento de <i>Eucalyptus</i>

Relationship Among Crop Systems, Soil Cover, and Water Erosion on a Typic Hapludox

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