O uso de imagens R99-SAR/SIPAM no programa de monitoramento do desmatamento da Floresta Amazônica Brasileira

Abstract

This paper presented a preliminary assessment of radar images R99-SAR/SIPAM to the Brazilian Forest Monitoring Program. SAR images were analyzed for qualification of deforestation polygons mapped by DETER project, considering high spatial resolution and ability to detect deforestation patterns. Approximately 91% of the polygons can be detected by means of SAR-R99/SIPAM images. In addition to suffering little interference from the atmosphere (clouds), the application of high spatial resolution radar data in DETER project can improve the ability to detect the deforestation of areas smaller than 25 hectares, scars not detected by low spatial resolution sensors. To evaluate the use of R99-SAR/SIPAM images to map deforested areas (shallow cut) by visual interpretation, were vectored deforestation polygons in the municipality of Iranduba with images generated in 2013. In addition to testing the capacity of discernment deforestation patterns in R99-SAR/SIPAM images, the mapping of deforested areas helped in the analysis and characterization of recent deforestation in Iranduba-AM district, has undergone strong anthropogenic pressure by the construction of bridge Rio Negro, connecting Iranduba-AM to Manaus-AM and duplication of Highway AM 070, which connects Iranduba-AM to Manacapuru-AM. Thus, it was concluded that the use of R99-SAR/SIPAM radar images can contribute as additional information to the Brazilian Forest Monitoring Program.