Modeling soil erosion using RUSLE and GIS in a watershed occupied by rural settlement in the Brazilian Cerrado

Cunha, Elias Rodrigues da; Bacani, Vitor Matheus; Panachuki, Elói

doi:10.1007/s11069-016-2607-3

Cited by 56 publications

(33 citation statements)

References 46 publications

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“…Little is known about how the loss of soil, nutrients, and agricultural productivity has changed over the years in the Cerrado [32][33][34][35][36][37]. Some studies of soil loss have been made on the medium to small scale or in plots [32,33,[35][36][37]; however, they do not give an overview of degraded soils in a large ecosystem scale or point out the main activities that cause soil degradation. Studies which consider a geospatial analysis, including applications using GIS, remote sensing, and the RUSLE model are sparse and cover limited areas within the Cerrado.…”

Section: Introductionmentioning

confidence: 99%

“…The study emphasized degraded pasture as one of the major environmental and economic problems for livestock production. Studying a smaller area, [33] used RUSLE for modeling erosion in a watershed occupied by rural settlement in the Cerrado. Both [32] and [33] show a significant increase in the potential for erosion due to changes in vegetation and land use when compared with the natural potential for erosion.…”

Section: Introductionmentioning

confidence: 99%

“…Studying a smaller area, [33] used RUSLE for modeling erosion in a watershed occupied by rural settlement in the Cerrado. Both [32] and [33] show a significant increase in the potential for erosion due to changes in vegetation and land use when compared with the natural potential for erosion. No studies were found that use the RUSLE model, or that consider the relationship between spatial erosion and agricultural productivity, for the entire Brazilian Cerrado.…”

Section: Introductionmentioning

confidence: 99%

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Agricultural Expansion in the Brazilian Cerrado: Increased Soil and Nutrient Losses and Decreased Agricultural Productivity

Gomes

Simões

Nora

et al. 2019

Land

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While food and nutrition security are issues that national and international organizations are tackling, one of the central problems often overlooked is the essential role of soils in providing nutritious food. Soils are the base for food production and food security. However, the majority of soils are in fair and poor conditions, with the most significant threats being erosion and loss of nutrients. In this study, we estimate the potential of soil loss, agricultural productivity loss, and nutrient loss for Brazil’s most important agricultural region, the Brazilian Cerrado, for the years 2000 and 2012. For this, we applied the Revised Universal Soil Loss Equation (RUSLE) model integrated with a geographical information system (GIS) to estimate annual soil loss rate and agricultural productivity loss, and used total nitrogen and total phosphorus in soil to estimate the annual nutrient loss rate caused by soil loss. All model factors and data were obtained from the literature. The results show that agricultural expansion in the Brazilian Cerrado is increasing the area of severe erosion, occasioning agricultural productivity decrease and soil nutrient depletion. The annual soil loss rate increased from 10.4 (2000) to 12.0 Mg ha−1 yr−1 (2012). Agricultural productivity loss occurred in more than 3 million hectares of crops and silviculture in 2000 and in more than 5.5 million hectares in 2012. Severely eroded areas lost between 13.1 and 25.9 times more nutrients than areas with low and moderate soil loss rates. These findings show that government policy should be directed to ensure the sustainable use of soils, mainly in agriculturally consolidated regions of the Brazilian Cerrado.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Agricultural Expansion in the Brazilian Cerrado: Increased Soil and Nutrient Losses and Decreased Agricultural Productivity

Gomes

Simões

Nora

et al. 2019

Land

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“…However, the most critical values occur in the northwest, north, west and middlenorth macro-regions. The northwest and north macro-regions are dominated by areas with native forests and pastures, which are considered effective cover for soil protection (Da Cunha et al, 2017). Unlike the northwest and north macro-regions, the middle-north and west contain large areas of agricultural land and, thus, they are considered the most critical macro-regions.…”

Section: Resultsmentioning

confidence: 99%

Spatio-temporal variability of erosivity in Mato Grosso, Brazil

Raimo¹,

Amorim²,

Couto³

et al. 2018

Rev. ambiente água

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The impact of rainfall on surfaces lacking vegetal cover can dissociate soil particles, thereby initiating the erosion process. This is known as rainfall erosivity and is expressed by the R factor in the Universal Soil Loss Equation. Agricultural areas often show seasonally erosion susceptibility throughout the year due to oscillations of the soil exposure rate and the vegetation change. Considering that approximately 30 million ha of the Mato Grosso State in Brazil is used for agriculture, this study aimed to predict and map the spatial and temporal variability of its territory. We evaluated the monthly (EI30) and annual (R) erosivity for 158 rain gauge stations and spatialized the values of EI30 and R by the Kriging method. It was observed that R values ranked as very high in the north, and high and medium-high in the south of Mato Grosso state. The mean value is 8835 MJ mm ha-1 h-1 year-1, considered high. Ninety-one percent of the annual erosivity was concentrated in the period between October and April, corresponding to the rainy season. The highest R factor values were found in the macro-regions of the northwest, north, west and medium-north of Mato Grosso State.

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“…For that reason, it can be stated that one can contribute to environmental suitability of subbasins [17,18].…”

Section: Physical Dynamics and The Influences Of The Environment Builmentioning

confidence: 99%

Physical Dynamics and the Influences of the Environment Built on Subbasins

Pereira¹,

Neckel²,

Almeida³

et al. 2018

JCEA

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Abstract:The fields of engineering, architecture and urbanism ought to ponder on constructive changes to be employed in the environment. Environmental vulnerability usually reaches sites with greater abundance of water resources that are exposed to contaminable factors, which usually become residential expansion areas, and often extrapolate city boundaries. The general objective of this study is to assess physical characteristics of the subbasins of the Curtume and Água Preta streams, located in the Paraíba do Sul watershed in the municipality of Pindamonhangaba, in the state of São Paulo (SP), Brazil. The current situation regarding this environment, based on soil type and morphometric and physiographic attributes, is specifically sought to be identified. The results show the morphological and physiographic relationships with the hydrological data that determine the natural pattern of the site, associated with anthropic actions that characterize potentialities and vulnerabilities of the area, thus determining environmental dynamics. The results demonstrate that urban sprawl and residential constructions in subbasin conservation areas should occur in a planned and strategic manner, without advancing to water conservation areas.

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Modeling soil erosion using RUSLE and GIS in a watershed occupied by rural settlement in the Brazilian Cerrado

Cited by 56 publications

References 46 publications

Agricultural Expansion in the Brazilian Cerrado: Increased Soil and Nutrient Losses and Decreased Agricultural Productivity

Agricultural Expansion in the Brazilian Cerrado: Increased Soil and Nutrient Losses and Decreased Agricultural Productivity

Spatio-temporal variability of erosivity in Mato Grosso, Brazil

Physical Dynamics and the Influences of the Environment Built on Subbasins

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