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Cropland area estimates using Modis NDVI time series in the state of Mato Grosso, Brazil 86
Victoria,Daniel de Castro; Paz,Adriano Rolim da; Coutinho,Alexandre Camargo; Kastens,Jude; Brown,J. Christopher.
The objective of this work was to evaluate a simple, semi‑automated methodology for mapping cropland areas in the state of Mato Grosso, Brazil. A Fourier transform was applied over a time series of vegetation index products from the moderate resolution imaging spectroradiometer (Modis) sensor. This procedure allows for the evaluation of the amplitude of the periodic changes in vegetation response through time and the identification of areas with strong seasonal variation related to crop production. Annual cropland masks from 2006 to 2009 were generated and municipal cropland areas were estimated through remote sensing. We observed good agreement with official statistics on planted area, especially for municipalities with more than 10% of cropland cover (R²...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cropland masks; Cultivated area; Fourier; Vegetation index.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000900012
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Land use dynamics in the Brazilian Cerrado in the period from 2002 to 2013 86
Sano,Edson Eyi; Rosa,Roberto; Scaramuzza,Carlos Alberto de Mattos; Adami,Marcos; Bolfe,Edson Luis; Coutinho,Alexandre Camargo; Esquerdo,Júlio César Dalla Mora; Maurano,Luís Eduardo Pinheiro; Narvaes,Igor da Silva; Oliveira Filho,Francisco José Barbosa de; Silva,Elaine Barbosa da; Victoria,Daniel de Castro; Ferreira,Laerte Guimarães; Brito,Jorge Luís Silva; Bayma,Adriana Panhol; Oliveira,Gustavo Henrique de; Bayma-Silva,Gustavo.
Abstract: The objective of this work was to analyze land use dynamics in the Brazilian Cerrado region from 2002 to 2013. This analysis was based on the interpretation of Landsat satellite images carried out by the projects Projeto de Conservação e Utilização Sustentável da Diversidade Biológica Brasileira (Probio) and TerraClass Cerrado 2013, both coordinated by Ministério do Meio Ambiente. In 2002, 38.9% of the Cerrado was covered by some type of anthropic activity. In 2013, this percentage increased to 43.4%. One of the main highlights is the emergence of a new agricultural frontier in the northern region of the study area, known as Matopiba.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Landsat; Probio; Remote sensing; TerraClass Cerrado.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000103700
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