Análise Dos Incêndios Ocorridos No Parque Nacional Da Chapada Diamantina-Bahia Em 2008 E 2015 Com Suporte Em Índices Espectrais De Vegetação

Leite, Cândida Caroline Souza de Santana; Santos, Sarah Moura Batista dos; Rocha, Washington de Jesus Sant'Anna da Franca; Silva, Ardemı́rio de Barros; Baptista, Gustavo Macêdo de Mello

doi:10.14393/rbcv69n6-44315

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…Following this trend, the re-establishment of vegetation cover observed in the present study also occurred in a short period (16 to 20 months) (Araújo & Conceição, 2021), which corroborates the results found with the application of the NBR index. Leite et al (2017) sought to identify fire-affected areas in 2008 and 2015 and compare the effectiveness of both NBR and NDVI spectral index for the same area as this study. The authors found that NBR attributed negative values to burned areas.…”

Section: Discussionmentioning

confidence: 99%

“…When the response is close to zero, the reflectance of both bands 5 and 7 are approximately equal, as with clouds, unproductive vegetation, bare soil, and rock outcrop. On the other hand, when NBR is negative, the reflectance in band 7 is higher than in band 5, suggesting high water stress on plants and the negative values representing burned areas (Leite et al, 2017;Santos et al, 2020).…”

Section: Processing In Google Earth Enginementioning

confidence: 96%

“…The increase in fire frequency and intensity has been documented in several ecosystems worldwide and it represents a substantial impact on global warming, as wildfires often result in massive loss of biomass and carbon, which may alter the local climate (Chuvieco et al, 2010;French et al, 2008;Meng & Meentemeyer, 2011;Parker et al, 2015;Robichaud et al, 2007;Westerling et al, 2006). In 2015, the Chapada Diamantina National Park, a Brazilian Federal Conservation Unit (UC), was affected by wildfires from September to December, when fire typically occurs in the region, as shown by several authors (Franca-Rocha et al, 2017;Leite et al, 2017;Santos et al, 2020;Santos et al, 2017). Therefore, when managing conservation areas such as the Chapada Diamantina National Park, it is essential to analyze the impact of fires on the ecosystem and its regrowth process.…”

Section: Introductionmentioning

confidence: 95%

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Avaliação da regeneração da vegetação pós-incêndio no Parque Nacional da Chapada Diamantina do Brasil através de sensoriamento remoto

Moura Batista dos Santos,

Bento-Gonçalves,

Vieira

et al. 2022

physisterrae

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A compreensão da dinâmica do fogo na vegetação é essencial para avaliar os impactes causados pela ação dos incêndios florestais, especialmente porque a queima de biomassa nos ecossistemas tem sido indicada como um dos principais fatores que impactam o clima e a biodiversidade. Uma alternativa atual para detetar incêndios através de dados de satélite são as plataformas de processamento em nuvens, como o Google Earth Engine (GEE). Dado este contexto, o presente trabalho visa avaliar o grau de recuperação da vegetação após um evento de incêndio numa área incluída no Parque Nacional da Chapada Diamantina (Bahia - Brasil) com base na aplicação da Razão de Queimada Normalizada (NBR) em conjuntos de dados Landsat Surface Reflectance Tier 1. As imagens foram acessadas e processadas na plataforma GEE. O índice NBR revelou-se mais sensível aos deslocamentos pré e pós-fogo dos pixels afetados pelos incêndios entre as bandas de imagem Landsat NIR e SWIR. Verificou-se que os valores médios do NBR diminuíram imediatamente após a ocorrência do incêndio em toda a área de estudo. Após o incêndio, os valores médios do NBR foram apontando no sentido do retorno a condições similares àquelas que o precederam, indicando os valores de NBR que a biomassa vegetal, nove meses após o incêndio, já apresentava uma considerável recuperação. Neste sentido, este estudo demonstra a necessidade de se conhecer melhor a dinâmica dos incêndios na região do Parque Nacional da Chapada Diamantina e os impactes associado a estes eventos, no que respeita à ecologia do fogo.

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Section: Discussionmentioning

confidence: 99%

Section: Processing In Google Earth Enginementioning

confidence: 96%

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

Avaliação da regeneração da vegetação pós-incêndio no Parque Nacional da Chapada Diamantina do Brasil através de sensoriamento remoto

Moura Batista dos Santos,

Bento-Gonçalves,

Vieira

et al. 2022

physisterrae

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Research on Wildfires and Remote Sensing in the Last Three Decades: A Bibliometric Analysis

Santos

Bento‐Gonçalves

Vieira

2021

Forests

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Evaluating the impact of wildland fires on landscapes, a pursuit increasingly supported by remote sensing techniques, requires an understanding of wildfire dynamics. This research highlights the main insights from the literature related to “wildfires” and “remote sensing” published between 1991 and 2020. The Scopus database was used as a source of information regarding scientific production on these topics, after which bibliometric tools were employed as a means through which to reveal patterns in this network of journals, terms, countries, and authors. The results suggest that these subject areas have undergone significant developments in the last three decades, having been the focus of growing interest among the scientific community. The most relevant contributions to the literature available have been made by researchers working in the areas of earth and environmental sciences (54% of the publications), primarily in the United States, China, Spain, and Canada. Research trends in this field have undergone a significant evolution in recent decades, explained by the strong relationship between the technological evolution of detection methods and remote sensing data acquisition.

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Effects of a megafire on the arbuscular mycorrhizal fungal community and parameters in the Brazilian Cerrado ecosystem

Moura¹,

Souza²,

Vieira-Júnior³

et al. 2022

For. syst.

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Aim of the study: To evaluate the effects of a mega-fire on the arbuscular mycorrhizal fungi (AMF) community and parameters in soils under Cerrado vegetation. Study area: Chapada dos Veadeiros National Park, Goiás, Brazil. This site suffered the biggest fire in its history on October 10, 2017, with an affected area of 66,000 ha. Material and methods: We analyzed AMF spore density, roots’ mycorrhizal colonization rate, easily extractable glomalin (EEG), as well as the AMF genera present. These parameters were evaluated in burned and unburned areas of five common phytophysiognomies of the region. Main results: Fire presence immediately influenced the mycorrhizal community parameters in Cerrado soils, which tended to increase afterwards. The presence of AMF genera did not differ between burned and unburned areas, with Acaulospora, Claroideglomus, Diversispora, Glomus, Funneliformis, Sclerocystis, and Gigaspora being present. The recovery of AMF community conditions in the Cerrado after fire events could also be observed in the mycorrhizal parameters evaluated, as the values of spore density, roots’ mycorrhizal colonization rate, and EEG were similar in the burned and unburned areas. Research highlights: AMF diversity, and especially their community parameters, show great recovery after fire events, since they are crucial in processes like nutrient cycling and soil aggregation.

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Análise Dos Incêndios Ocorridos No Parque Nacional Da Chapada Diamantina-Bahia Em 2008 E 2015 Com Suporte Em Índices Espectrais De Vegetação

Cited by 3 publications

References 4 publications

Avaliação da regeneração da vegetação pós-incêndio no Parque Nacional da Chapada Diamantina do Brasil através de sensoriamento remoto

Avaliação da regeneração da vegetação pós-incêndio no Parque Nacional da Chapada Diamantina do Brasil através de sensoriamento remoto

Research on Wildfires and Remote Sensing in the Last Three Decades: A Bibliometric Analysis

Effects of a megafire on the arbuscular mycorrhizal fungal community and parameters in the Brazilian Cerrado ecosystem

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