QUANTIFICAÇÃO DA ÁREA QUEIMADA NO ESTADO DO TOCANTINS NO PERÍODO DE 2003 A 2011 UTILIZANDO IMAGENS DO SATÉLITE TM/LANDSAT-5

Abstract

Burning bring several consequences for the Cerrado biome, between them is the increase in temperature, decrease of rainfall, soil impoverishment, besides increase the risks of respiratory diseases. The state of Tocantins has favorable characteristics for the development of economic activities such as agriculture and livestock, bound to these activities is the use of fire for the management of pasture areas, agricultural activities, among others, mainly in small properties. The use of orbital data representsan efficient tool in the detection of burned áreas, in this context, the present work used TM / Landsat-5 satellite images for the quantification of burned areas in the state of Tocantins from 2003 to 2011. The applied methodology consisted of Processing of satellite images by visually identifying burn scars on orbital images. As a result we have the burn peaks in 2007 and 2010 with 5.177.770 and 7.225.070 ha respectively, later, comparing these data with the number of heat sources, we confirm the highest records in 2010 followed by the year 2007.

Keywords

• Cerrado
• Burn scar
• Orbital data