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Revista de Ciências Agrárias

Print version ISSN 0871-018X


ARRAES, Christiano Luna et al. Estimation of deforestation rate in bannach municipality, pará state - amazon, using images landsat5/tm. Rev. de Ciências Agrárias [online]. 2010, vol.33, n.2, pp.231-243. ISSN 0871-018X.

The Amazon, the planet’s largest rain forest, has an area of approximately 6.4 million square kilometers in South America and occupies 63% of the Brazilian territory. Due to deforestation, the monitoring of these areas is needed, mainly by the expansion of management of the productive farming process. Thus, this study aims to estimate the annual and daily rate of deforestation for the Municipality of Bannach, Para State, Brazil. The Landsat images, sensor 5 TM (Thematic Mapper) from 1997 to 2009 years were used. The supervised classification by Maximum Likelihood was made for analysis the deforestation rate. The index showed an overall accuracy results above 90% and the Kappa index above 0.83 for all years of study. Therefore, throughout the series, there is an increase in deforestation continuously with mainly land use by livestock.

Keywords : Amazon; deforestation; land-cover change; Pará; remote sensing.

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