Modelagem de espectros temporais NDVI-MODIS, no período de 2000 a 2008, na bacia do rio Paracatu, Brasil

Santana, Otacílio Antunes; Júnior, Osmar Abı́lio de Carvalho; Pimentel, Concepta Margaret McManus; Gomes, Roberto Arnaldo Trancoso; Oliveira, Samuel Rocha de

doi:10.1590/s0102-261x2010000100004

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…A utilização de imagens por meio de sensoriamento remoto constitui uma importante ferramenta para análise e estudo das alterações climatológicas. Em áreas urbanas, são utilizadas principalmente na relação do uso e cobertura do solo, pois possibilita estimar parâmetros como temperatura da superfície, albedo da superfície e índices de vegetação (SANTANA et al 2010;SOUZA et al 2016).…”

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Analysis of urbanization in the city of Barra do Bugres/MT based on the suppression of vegetated areas using remote sensing

Souza,

Paula,

Alves

et al. 2024

RNGC

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With the advent of the implementation of the University of the State of Mato Grosso - UNEMAT in Barra do Bugres - MT, the city began to house the university population, resulting in the suppression of vegetated areas during its process of intense urbanization. Urbanization triggers changes in land use and land cover, thus generating impacts on the relationships between energy cycles on the surface. Thus, the general objective of this research was to analyze the urbanization of Barra do Bugres-MT from the space-time relationship of the surface temperature and the vegetation index (NDVI) through TM (Thematic Mappes) images from the Landsat 5 sensor in the years 1987 and 2010. Analyzing the surface temperature distribution, it was found that the highest values were concentrated in the north and east portions, more densely urbanized portions. The lowest NDVI values were found in the eastern portion, where there is greater urban density. However, the highest NDVI values were found in regions of the western portion, where despite the greater suppression of vegetated areas from 1987 to 2010, lower urban density and greater presence of native vegetation are observed. The use of remote sensing and NDVI proved to be a viable tool for analyzing the urbanization process in Barra do Bugres-MT between the years of study.

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Section: Introductionunclassified

Analysis of urbanization in the city of Barra do Bugres/MT based on the suppression of vegetated areas using remote sensing

Souza,

Paula,

Alves

et al. 2024

RNGC

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Dinâmica espacial do uso do solo e da expansão agrícola no Parque Nacional da Serra da Canastra (MG) entre 2000 e 2015, utilizando perfis espectro-temporais do sensor MODIS

Messias

Ferreira

2017

Os Desafios Da Geografia Física Na Fronteira Do Conhecimento

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Este trabalho tem como objetivo geral avaliar as dinâmicas do uso do solo no Parque Nacional da Serra da Canastra (MG), localizado a Sudoeste de Minas Gerais, utilizando perfis espectro-temporais gerados por produtos NDVI MODIS, entre os anos de 2000 e 2015. Para verificar as áreas em que houve mudança no uso entre essas datas, mapeou-se e uso do solo das duas datas, utilizando imagens Landsat TM e OLI e geraram-se áreas de discordância. Constatou-se que entre 2000 e 2015 houve aumento das áreas de culturas temporárias, permanentes e solo exposto, os quais substituíram matas e principalmente, campos. Houve redução da classe silvicultura, substituída por campos ou culturas temporárias. As áreas do parque com maior percentual de alterações de uso do solo entre 2000 e 2015 estão na zona de amortecimento, seguido pelas áreas não regularizadas e por fim as áreas regularizadas. Palavras chave: Uso do solo; Perfis espectro-temporais; NDVI; Parque Nacional da Serra da Canastra; Unidades de Conservação.

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Improvement of Methods and Techniques that Subsidize the Analysis of Land Use Changes Over Time

Pereira¹,

Silva²,

Júnior³

2019

Fronteiras

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Both natural evolution and human activities result in changes in natural resources and in the terrestrial environment. Observation of the temporal and spatial level of the Earth allows us to understand the interrelationship of the phenomena that cause these changes. The studies carried out in this sense vary according to the need of the researchers and the object to be studied. There is a need to work with a large amount of time in a temporal series of multispectral images in order to obtain more detailed data of the space changes over time. This work aims to contribute to the area of geoprocessing regarding the improvement of methods and techniques that subsidize the analysis of land use changes over time. For this purpose, an approach was proposed in order to allow the analysis of an image with -bands, in -times simultaneously, so the time dimension was added to the model of a common three-dimensional digital image (lines, columns and bands), making it four-dimensional (lines, columns, bands and times). New multispectral and multitemporal data storage formats (TBSQ, TBIL, TBIP) were produced, to test them was developed a two-stage prototype. The first version of the prototype consumed a considerable time to execute the tests, leading to the need for improving the prototype. In the second version of the prototype, a multi-pointer technique was implemented, which brought significant performance gains to the initial version.

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Modelagem de espectros temporais NDVI-MODIS, no período de 2000 a 2008, na bacia do rio Paracatu, Brasil

Cited by 3 publications

References 14 publications

Analysis of urbanization in the city of Barra do Bugres/MT based on the suppression of vegetated areas using remote sensing

Analysis of urbanization in the city of Barra do Bugres/MT based on the suppression of vegetated areas using remote sensing

Dinâmica espacial do uso do solo e da expansão agrícola no Parque Nacional da Serra da Canastra (MG) entre 2000 e 2015, utilizando perfis espectro-temporais do sensor MODIS

Improvement of Methods and Techniques that Subsidize the Analysis of Land Use Changes Over Time

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