Estimativa da Perda de Água Na APA do Rio Pandeiros, Minas Gerais

Silva, Lucas Augusto; Souza, Caetano Marciano de; Leite, Marcos Esdras; Filgueiras, Roberto

doi:10.5752/p.2318-2962.2020v30n62p768

Cited by 3 publications

(2 citation statements)

References 51 publications

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“…Regarding the altitude (r = 0.73), we understand that it is due to the distribution of areas with higher altimetry in the eastern portion of the Cerrado to the north of Minas Gerais, where the Serra do Espinhaço is located (SAADI, 1995). In these environments, there is a tendency for free movement of the wind (following the logic of the logarithmic profile) (MALACARNE; RIBEIRO, 2018), increasing its speed, which leads to the removal of humid air from the atmosphere adjacent to the surface, favoring high atmospheric demand, expanding the evapotranspiration rate (SILVA et al, 2020).…”

Section: Intercorrelation Between Environmental Aspects In Pasturesmentioning

confidence: 99%

Modelling the Pastureland Productivity in Areas of Savanna in Northern Minas Gerais – Brazil

Silva

Bolfe

Ferreira

et al. 2022

RCG

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Accurate information on the quality of pastures is essential for the Brazilian economy, as livestock is relevant to the country's Gross Domestic Product (GDP); in addition, well-managed pastures are a necessary step to mitigate the emission of greenhouse gases (GHG). In this work, the productivity of pastures in savanna areas in northern Minas Gerais (Brazil) was analyzed using remote sensing techniques. It was found that dry biomass varied according to climatic seasonality, on the monthly time scale, with the highest values in the rainy season (68.79%) and the lowest in the dry period (31.21%). To observe the importance of well-managed pastures for the studied region, a correlation of environmental parameters that assume the quality of these pasturelans was carried out. We observed a more significant correlation between Gross Primary Production (GPP)), Leaf Area Index/Photosynthetically Active Radiation Absorbed (IAF/RFAA) and altitude with the dry biomass capacity of the Animal Unit (UA / Hectare). We observed that the pastures in the study region do not have enough inputs to meet the needs of the animals, thinking about the intensification logic, mainly when comparing the annual average of AU/ha of this study with the Brazilian median, with a difference of 86.37 %.

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Section: Intercorrelation Between Environmental Aspects In Pasturesmentioning

confidence: 99%

Modelling the Pastureland Productivity in Areas of Savanna in Northern Minas Gerais – Brazil

Silva

Bolfe

Ferreira

et al. 2022

RCG

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“…Consiste em um algoritmo paramétrico para estimativa do balanço de energia em qualquer produto orbital que registre a radiância e emissividade terrestre. A eficiência do SEBAL é relatada para diversos ecossistemas (Santos et al, 2011;Feizizadeh e Blaschke, 2012;Silva et al, 2020). O método SEBAL estima TS a partir da radiância térmica corrigida (Rc).…”

Section: áRea De Estudounclassified

Modelagem Espaço-Temporal De Ilhas De Calor Urbana E Correlação Com Variáveis- Montes Claros, Mg, Brasil

et al. 2020

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As ilhas de calor urbana (ICU) é um aumento da temperatura superficial (TS) e atmosférica, atingindo metrópoles e cidades médias do mundo. Alterações de uso da terra, clima e topografia modulam o fenômeno, compreender relação desses fatores possibilita identificar as causas de ICU. A pesquisa tem foco nesse âmbito, com análise TS, formação de ICU e relação com outras variáveis. O estudo foi na sexta maior cidade do estado de Minas Gerais (Montes Claros), em zona de clima AW (Köppen). A modelagem de TS foi a partir da banda termal Landsat 5 e 8 durante meses agosto de 1991, 2001, 2011 e 2018. Análise estatística multivariada foi aplicada entre informações de TS, variáveis de uso da terra e geomorfométricas. Entre 1991 a 2018 a TS aumentou, convertendo faixas de 22 a 26 °C para > 28 °C, com formação e aumento de 333% de ICU (ICU= > 4 °C média/período). Fatores naturais de radiação solar, altitude, índice de circulação do vento, e face de exposição de vertente influenciam na dinâmica de TS. Porém, o aumento de TS tem melhor relação com densidade urbana e com baixa cobertura vegetal. A redução do problema de ICU deve focar no planejamento de uso da terra e aumento de áreas verdes.

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Climate Change Effects on Land Use and Land Cover Suitability in the Southern Brazilian Semiarid Region

Silva,

Sano,

Parreiras

et al. 2024

Land

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Climate change is expected to alter the environmental suitability of land use and land cover (LULC) classes globally. In this study, we investigated the potential impacts of climate change on the environmental suitability of the most representative LULC classes in the southern Brazilian semiarid region. We employed the Random Forest algorithm trained with climatic, soil, and topographic data to project future LULC suitability under the Representative Concentration Pathway RCP 2.6 (optimistic) and 8.5 (pessimistic) scenarios. The climate data included the mean annual air temperature and precipitation from the WorldClim2 platform for historical (1970–2000) and future (2061–2080) scenarios. Soil data were obtained from the SoilGrids 2.1 digital soil mapping platform, while topographic data were produced by NASA’s Shuttle Radar Topography Mission (SRTM). Our model achieved an overall accuracy of 60%. Under the worst-case scenario (RCP 8.5), croplands may lose approximately 8% of their suitable area, while pastures are expected to expand by up to 30%. Areas suitable for savannas are expected to increase under both RCP scenarios, potentially expanding into lands historically occupied by forests, grasslands, and eucalyptus plantations. These projected changes may lead to biodiversity loss and socioeconomic disruptions in the study area.

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Estimativa da Perda de Água Na APA do Rio Pandeiros, Minas Gerais

Cited by 3 publications

References 51 publications

Modelling the Pastureland Productivity in Areas of Savanna in Northern Minas Gerais – Brazil

Modelling the Pastureland Productivity in Areas of Savanna in Northern Minas Gerais – Brazil

Modelagem Espaço-Temporal De Ilhas De Calor Urbana E Correlação Com Variáveis- Montes Claros, Mg, Brasil

Climate Change Effects on Land Use and Land Cover Suitability in the Southern Brazilian Semiarid Region

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