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		<doi>10.1080/01431160802509058</doi>
		<issn>0143-1161</issn>
		<label>lattes: 0464617687774083 5 ShimabukuroDAFLVBM:2009:FrImDe</label>
		<citationkey>ShimabukuroADFLVBM:2009:FrImDe</citationkey>
		<title>Fraction images derived from Terra Modis data for mapping burnt areas in Brazilian Amazonia</title>
		<year>2009</year>
		<month>Mar.</month>
		<typeofwork>journal article</typeofwork>
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		<author>Shimabukuro, Yosio Edemir,</author>
		<author>Arai, Egídio,</author>
		<author>Duarte, Valdete,</author>
		<author>Freitas, Ramon Morais de,</author>
		<author>Lima, André,</author>
		<author>Valeriano, Dalton de Morisson,</author>
		<author>Brown, I. F.,</author>
		<author>Maldonado, M. L. R.,</author>
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		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>undefined</affiliation>
		<affiliation>Woods Hole Research Center, Universidade Federal do Acre (UFAC), Parque Zoobotanico, Rio Branco</affiliation>
		<affiliation>Woods Hole Research Center, Universidade Federal do Acre (UFAC), Parque Zoobotanico, Rio Branco</affiliation>
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		<electronicmailaddress>andre@dsr.inpe.br</electronicmailaddress>
		<e-mailaddress>andre@dsr.inpe.br</e-mailaddress>
		<journal>International Journal of Remote Sensing</journal>
		<volume>30</volume>
		<number>6</number>
		<pages>1537-1546</pages>
		<secondarymark>A2_CIÊNCIAS_AGRÁRIAS B1_CIÊNCIAS_BIOLÓGICAS_I B1_ECOLOGIA_E_MEIO_AMBIENTE A2_ENGENHARIAS_I B2_ENGENHARIAS_II B1_GEOCIÊNCIAS A1_GEOGRAFIA A2_INTERDISCIPLINAR B1_ODONTOLOGIA A1_PLANEJAMENTO_URBANO_E_REGIONAL_/_DEMOGRAFIA A2_SAÚDE_COLETIVA</secondarymark>
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		<keywords>Brazilian Amazonia, Burnt areas, Dry seasons, Environmental studies, Field observations, Forest fires, Fraction images, Ground data, High temporal resolution, Image editing, Land managements, Land surface, Landsat-5, Misclassifications, MODIS sensors, Multi-temporal analysis, Non-supervised classification, Operational projects, Terra-MODIS, TM image, Tropical deforestation, Western region, Deforestation, Disasters, Drought, Land use, Mapping, Spectrometers, algorithm, deforestation, forest fire, image analysis, image classification, Landsat thematic mapper, mapping method, MODIS, satellite data, segmentation, temporal analysis, unsupervised classification, Deforestation, Disasters, Drought, Land Use, Mapping, Spectrometers, Acre [Brazil], Amazonia, Brazil, South America.</keywords>
		<abstract>The objective of this paper is to present a method for mapping burnt areas in Brazilian Amazonia using Terra MODIS data. The proposed approach is based on image segmentation of the shade fraction images derived from MODIS, using a non-supervised classification algorithm followed by an image editing procedure for minimizing misclassifications. Acre State, the focus of this study, is located in the western region of Brazilian Amazonia and undergoing tropical deforestation. The extended dry season in 2005 affected this region creating conditions for extensive forest fires in addition to fires associated with deforestation and land management. The high temporal resolution of MODIS provides information for studying the resulting burnt areas. Landsat 5 TM images and field observations were also used as ground data for supporting and validating the MODIS results. Multitemporal analysis with MODIS showed that about 6500 km2 of land surface were burnt in Acre State. Of this, 3700 km2 corresponded to the previously deforested areas and 2800 km2 corresponded to areas of standing forests. This type of information and its timely availability are critical for regional and global environmental studies. The results showed that daily MODIS sensor data are useful sources of information for mapping burnt areas, and the proposed method can be used in an operational project in Brazilian Amazonia.</abstract>
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		<language>en</language>
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