Unidades Climáticas Do Triângulo Mineiro/Alto Paranaíba

Novais, Giuliano Tostes; Brito, Jorge Luís Silva; Sanches, Fábio de Oliveira

doi:10.5380/abclima.v23i0.58520

Cited by 7 publications

(6 citation statements)

References 5 publications

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“…The climate of the region is classified as a semi-dry tropical type, with dry season during April to September and a rainy season from October to March, representing six months of drought [40]. Its average annual precipitation was 1659.3 mm in the period from 1979 to 2013, according to data from 'Instituto Nacional de Meteorologia do Ministério da Agricultura, Pecuária e Abastecimento' [41].…”

Section: Study Areamentioning

confidence: 99%

Potential Impacts of Land Use Changes on Water Resources in a Tropical Headwater Catchment

Martins

Valera

Zanata

et al. 2021

Water

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The main objective of this study was to investigate the relationships between land use and future scenarios of land changes on water runoff and groundwater storage in an Environmental Protection Area (EPAs) watershed. The methodology was based on the application of the Soil and Water Assessment Tool (SWAT) hydrological modelling to investigate flow simulations in current land use and in two future scenarios (forest and pasture). The performance of goodness-of-fit indicators in the calibration (NSE = 0.82, R2 = 0.85, PBIAS = 11.9% and RSR = 0.42) and validation (NSE = 0.70, R2 = 0.72, PBIAS = −4% and RSR = 0.55) was classified as good and very good, respectively. The model accurately reproduced the inter-annual distribution of rainfall. The spatial distribution of average annual surface flow, lateral flow, and groundwater flow were different between sub-basins. The future scenario on land use change to forest (FRSE) and pasture (PAST) differed during the year, with greater changes on rainy and dry seasons. FRSE increase of 64.5% in area led to decreased surface runoff, total runoff, and soil water; and increased lateral flow, groundwater, and evapotranspiration. The effect of the natural vegetation cover on soil moisture content is still unclear. The hydrological model indicated the main areas of optimal spatial water flow. Considering economic values, those areas should encourage the development of government policies based on incentive platforms that can improve environmental soil and water sustainability by establishing payment for environmental services (PES).

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Section: Study Areamentioning

confidence: 99%

Potential Impacts of Land Use Changes on Water Resources in a Tropical Headwater Catchment

Martins

Valera

Zanata

et al. 2021

Water

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“…The region's climate, according to Köppen, is Cwa (humid subtropical climate) and Cwb (subtropical highland climate) types, characterized by hot summers and mild winters (Alvares et al, 2013). Rainfall ranges between 1,000 and 1,800 mm, with temperatures fluctuating between 18 and 22 ºC (Novaes et al, 2018).…”

Section: Study Areamentioning

confidence: 99%

Serra da Canastra National Park: Influence of forest fires on the RUSLE C factor and its impact on water erosion

RIOS,

SANTANA,

LENSE

et al. 2024

Not Bot Horti Agrobo

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The adverse impacts of soil degradation and nutrient loss resulting from water erosion are significant environmental concerns that have profound implications for both water quality and biodiversity. This study aims to evaluate the impact of forest fires on soil loss through water erosion in the Serra da Canastra National Park, in Minas Gerais state, Brazil. Using the Revised Universal Soil Loss Equation (RUSLE), which considers rainfall erosivity, soil erodibility, slope length and slope and vegetation cover, the C factor (vegetation cover) values were obtained from data from literature and methods based on the Normalized Differential Vegetation Index (NDVI). Validation was carried out using data on total sediment, water flow and daily runoff from the hydrosedimentological station and the InVEST software. The results highlight the significant impact of wildfires on soil loss through water erosion and indicate that areas recently affected by wildfires, especially on steep slopes and with more erodible soils, are subject to the highest rates of soil loss. Soil loss rates varied from 0.75 to 12.55 Mg ha-1 yr-1, in part due to the different ways of obtaining factor C. The research emphasizes the need to conserve vegetation cover to prevent soil erosion, particularly in regions impacted by forest fires. This study offers valuable insights that can contribute to enhancing the sustainable environmental management of the Serra da Canastra National Park.

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“…A região possui um clima tropical seco com períodos chuvosos de outubro a março e secos de abril a setembro (Novais, Brito & Sanches 2018). A precipitação média anual para o período de 1989 a 2017 foi de 1633 mm, de acordo com dados da estação pluviométrica em Uberaba (83577) do Instituto Nacional de Meteorologia (INMET), com uma temperatura média anual de 22,5°C.…”

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Estimativas da Recarga do Sistema Aquífero Bauru em uma Microbacia no Entorno da Cidade de Uberaba – MG

et al. 2021

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ResumoO Sistema Aquífero Bauru (SAB) é um aquífero predominantemente livre, com grande extensão territorial, abrangendo parte dos estados de Minas Gerais, São Paulo, Paraná, Goiás e Mato Grosso do Sul. Na região do Triângulo Mineiro, embora pouco estudado, o SAB possui importante papel no atendimento total ou parcial às demandas de abastecimento público de água de diversas cidades, além de contribuir na manutenção das vazões dos rios na época da estiagem. Um dos principais parâmetros a ser avaliado para a gestão de uma unidade aquífera é sua taxa de recarga, e nesse sentido, o presente trabalho apresenta estimativas de recarga no SAB, para o período de agosto de 2016 a julho de 2019, em uma microbacia com área de 1,4 km², no entorno da cidade de Uberaba. Foram empregados três métodos para determinação da recarga: o método de Balanço Hídrico Climático (BHC) baseado em dados de precipitação e evapotranspiração real fornecidos pela estação meteorológica local, o método de Variação de Nível d'Água (VNA) utilizando dados de 11 piezômetros na área de estudo e o método apoiado em dados de sensoriamento remoto do sistema de satélites do Gravity Recovery and Climate Experiment (GRACE). O método BHC indicou para o período de estudo uma recarga potencial média anual de 902 mm e o método com dados do GRACE indicou uma recarga média anual de 517 mm. A recarga potencial calculada pelo método BHC foi utilizada como referência para determinação do valor máximo admissível para o coeficiente de armazenamento a ser utilizado no método VNA. Para o método VNA, adotou-se uma faixa de coeficiente de armazenamento para o SAB de 0,05 a 0,09, os valores médios da recarga anual variaram de 302 a 541 mm. Embora os estudos de avaliação de recursos hídricos subterrâneos utilizando dados do GRACE sejam normalmente aplicados em escalas globais/regionais, os valores obtidos de recarga média anual foram convergentes com o método VNA.

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Unidades Climáticas Do Triângulo Mineiro/Alto Paranaíba

Cited by 7 publications

References 5 publications

Potential Impacts of Land Use Changes on Water Resources in a Tropical Headwater Catchment

Potential Impacts of Land Use Changes on Water Resources in a Tropical Headwater Catchment

Serra da Canastra National Park: Influence of forest fires on the RUSLE C factor and its impact on water erosion

Estimativas da Recarga do Sistema Aquífero Bauru em uma Microbacia no Entorno da Cidade de Uberaba – MG

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