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		<isbn>978-85-17-00088-1</isbn>
		<label>59488</label>
		<citationkey>SanoCoFrLiCh:2017:RePrBa</citationkey>
		<title>Desmatamento em áreas de cobertura não-florestais do bioma Amazônia: resultados preliminares baseados em imagens do satélite Landsat-8 OLI de 2013</title>
		<format>Internet</format>
		<year>2017</year>
		<secondarytype>PRE CN</secondarytype>
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		<author>Sano, Edson Eyji,</author>
		<author>Corrêa, Andreia Alimandro,</author>
		<author>Ivone Santos Amutares,</author>
		<author>Freitas, Daniel Moraes,</author>
		<author>Lisboa, José Almir,</author>
		<author>Cho, David Fernando,</author>
		<electronicmailaddress>edson.sano@gmail.com</electronicmailaddress>
		<editor>Gherardi, Douglas Francisco Marcolino,</editor>
		<editor>Aragão, Luiz Eduardo Oliveira e Cruz de,</editor>
		<e-mailaddress>daniela.seki@inpe.br</e-mailaddress>
		<conferencename>Simpósio Brasileiro de Sensoriamento Remoto, 18 (SBSR)</conferencename>
		<conferencelocation>Santos</conferencelocation>
		<date>28-31 maio 2017</date>
		<publisher>Instituto Nacional de Pesquisas Espaciais (INPE)</publisher>
		<publisheraddress>São José dos Campos</publisheraddress>
		<pages>3369-3376</pages>
		<booktitle>Anais</booktitle>
		<organization>Instituto Nacional de Pesquisas Espaciais (INPE)</organization>
		<transferableflag>1</transferableflag>
		<abstract>The Brazilian Amazon is covered not only by tropical dense forests but also by non-forest formations, mostly savanna (mosaics of grasslands, shrublands and forestlands) and periodically flooded campinas (sparse vegetation, usually over sandy soils) and campinaranas (low tree-dominated formation, in-between campinas and dense forest). The non-forest, natural formations occupy ~ 29 million hectares in the Amazonia biome. Long-time, annual deforestation monitoring of the Brazilian Amazon has been conducted by the National Institute for Space Research (INPE) since 1988, more specifically, by the PRODES project, but only in forested areas. This study aims to estimate deforestation in non-forested areas of the Amazonia´s biome. Only polygons with size larger than 10,000 hectares were considered, that is, 66% (19 million hectares) of total non-forested areas in the biome. The study was based on the RGB color composites of Landsat-8 OLI images (95 scenes; bands 4, 5 and 6), visually interpreted with the support of ArcGIS 9.3 software package. Two or more Landsat overpasses per scene were considered whenever cloud cover condition was high (more than 40%). Higher spatial resolution, RapidEye scenes as well as the images available in the Google Earth? software were also analyzed to support the Landsat image interpretation. Results showed that 5% (11,560 km2) of the study area were deforested in 2013. Mato Grosso was the state that presented the largest area of deforestation: 8,430 km2. Ongoing study is mapping polygons smaller than 10,000 hectares. Validation procedure to estimate the accuracy of the mapping results also will be considered.</abstract>
		<area>SRE</area>
		<type>Desflorestamento</type>
		<language>pt</language>
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