Suscetibilidade à contaminação da água subterrânea em função de propriedades dos solos no Cerrado brasileiro

Mingoti, Rafael; Spadotto, C. A.

doi:10.1590/s0100-204x2016000900025

Cited by 14 publications

(6 citation statements)

References 17 publications

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“…In Brazil, attempts have been done to characterize the vulnerability of groundwater to pesticide contamination (Hirata et al, 1997;Scorza Júnior& Silva, 2007). More recently, Mingoti et al (2016) presented an index to characterize the vulnerability of Brazilian groundwater to pesticide contamination in the Cerrado biome. These studies of groundwater vulnerability to pesticides can be an initial step in the development of exposure scenarios.…”

Section: Introductionmentioning

confidence: 99%

Statistically based approach to select worst-case groundwater scenarios for environmental risk assessment of pesticides in Brazil

Scorza¹,

Canesin²,

Seabra³

et al. 2024

Ecotoxicol. Environ. Contam.

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Exposure scenarios in combination with simulation models have been used in the procedure of Environmental Risk Assessment (ERA) of pesticides to estimate exposure concentrations in environmental compartments.The appropriate definition of exposure scenarios is primordial to guarantee ERA purpose to evaluate if a pesticide use in an intended area can be considered safe. This work had the aim to present and test a geo-and statistically based approach to define worst-case groundwater exposure scenarios for Brazil. To do so, soil-climate data of Mato Grosso do Sul state consisting of 42 locations (3 soil classes and 14 meteorological stations) were used to generate populations of Predicted Environmental Concentrations (PEC) at 3 and 5-m depth for a simulation period of 24 years. A total of 3,780 graphs were generated of PEC populations for 15 "dummy" pesticides. After setting equal risks in both dimensions (spatial and temporal) equal to 20%, the overall risks exceedance of tested worst-case groundwater exposure scenarios were about 10% for both depths. Thus, this approach can be considered suitable to guarantee a pre-defined overall risk exceedance once defined by the regulatory authorities in Brazil.

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Section: Introductionmentioning

confidence: 99%

Statistically based approach to select worst-case groundwater scenarios for environmental risk assessment of pesticides in Brazil

Scorza¹,

Canesin²,

Seabra³

et al. 2024

Ecotoxicol. Environ. Contam.

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“…Outro fato preocupante é que os Neossolos Quartzarênicos foram classificados como solos predominantes nas áreas mais suscetíveis à contaminação do lençol freático por contaminantes químicos orgânicos (Mingoti;Spadotto;Moraes, 2016). O impacto ambiental causado devido a práticas predatórias dos bens naturais, sem os devidos cuidados, podem causar danos ambientais, econômicos e sociais incalculáveis.…”

Section: Discussionunclassified

Degradação de áreas com processo de Arenização na Bacia do Córrego Guanabara, município de Reserva do Cabaçal –MT (Degradation of areas with sandstones process in the Guanabara Stream Basin, Municipality Reserva the Cabaçal - MT)

Nogueira

Tocantins

Salomão

2019

Rev. Bras. Geog. Fis.

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A microbacia do córrego Guanabara, pertencente à Bacia do Alto Paraguai (BAP), abrange uma área de cerca de 28, 19 km2 no município de Reserva do Cabaçal, Mesorregião Sudeste Mato-Grossense, apresentando áreas de exposição superficial de solos arenosos, sem cobertura vegetal, tidas para esse trabalho como areais. O objetivo deste estudo foi caracterizar os areais, destacando as condições de degradação do solo. Neste sentido, foi aplicada uma analise comparativa de duas áreas da bacia em questão, sendo uma submetida ao processo de arenização e outra conservada com bioma Cerrado, por meio de diagnóstico morfológico do perfil de solo e análises físicas e químicas. O processo de formação das áreas arenizadas envolve as características de fragilidade ambiental, a forma de uso e ocupação da terra favorecendo a perda da fertilidade do solo e dificultando a fixação e permanência das espécies vegetais levando a surgência de manchas arenosas exposta a degradação por processos erosivos. A extensão dessas áreas foi estimada em 1,9% da área da bacia no ano de 2005, tendo evoluído para 4, 2% em 2015, chegando a 0,17km2. Sendo a bacia pertencente às cabeceiras do pantanal Mato-Grossence necessita-se de medidas de prevenção e recuperação destas áreas tendo em vista a contenção dos processos de degradação. A B S T R A C TThe Guanabara cachment, (28,19km2) part of the high portion of Paraguai basin (BAP), within Reserva do Cabaçal country, southeast of Mato Grosso state, presents sand soils on surface with no savana covegare, considered as sandization. The goal of the work was to study the sandy areas, highlighting the soil degradation aftereffect. We applied a comparative analysis between conserved and sandizaded areas, by soil profile morphological diagnosis and physico-chemical analysis. The sandization process includes environmental fragility and the land use favoring loss of soil fertility, preventing the fixation of plants and allowing the emergence of sandy areas, which will be easily eroded by hillslope process. We calculated the sandy areas as 1,9% of the cachment on 2005, increasing to 4,2% in 2015, covering 0,17 km2. As the area feeds the wetlands of the Brazilian “pantanal” it is important to apply prevention and recovery actions aiming the reduction of degradation process. Keywords: Sandization, degradation, environmental fragility

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“…Fragmentation of the transition region between the vegetation of Atlantic Forest and Cerrado is the result of constant degradation of their natural ecosystems due to the misuse of land for agriculture and, mainly, for pasture (Salomão et al, 2018). This degradation alters more than just the biodiversity of the region because the region also encompasses an extensive drainage network, and thus serves an important role in regional nutrient recycling (Mingoti et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The Homogenization of two Different Natural Ecosystems by Conversion to Pasture in the Southern Espinhaço, Brazil

et al. 2021

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Fragmentation of natural areas alters the natural landscape, removing native vegetation and creating an anthropic matrix. In order to better understand the consequences of grazing in areas of campo rupestre and forest, the present study aimed to analyze changes in the vegetation of Cerrado and Atlantic Forest, in the Southern Espinhaço, between 1979 and 2015. The vegetation of the study area was identified as arboreal (forest), or herbaceous or shrubby (campo rupestre) by visual classification of a mosaic of aerial photographs from 1979 and the supervised classification of land use from a Landsat 8 image from 2015. Differences in vegetation were analyzed using a transition matrix based on the "Markov model", which indicated conversions of vegetation classes due to the misuse of land, mainly as pasture. The results indicate the conversion of arboreal vegetation area into areas of exotic herbaceous vegetation, and stability in the area of shrubby vegetation.

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Suscetibilidade à contaminação da água subterrânea em função de propriedades dos solos no Cerrado brasileiro

Cited by 14 publications

References 17 publications

Statistically based approach to select worst-case groundwater scenarios for environmental risk assessment of pesticides in Brazil

Statistically based approach to select worst-case groundwater scenarios for environmental risk assessment of pesticides in Brazil

Degradação de áreas com processo de Arenização na Bacia do Córrego Guanabara, município de Reserva do Cabaçal –MT (Degradation of areas with sandstones process in the Guanabara Stream Basin, Municipality Reserva the Cabaçal - MT)

The Homogenization of two Different Natural Ecosystems by Conversion to Pasture in the Southern Espinhaço, Brazil

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