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	Provedor de dados Acta Amazonica (1) Autor Aguado,María Inmaculada (1) Mollicone,Danilo (1) Pacheco,Carlos Eduardo (1) Palavra-chave Land cover change (1) Land use (1) Monitoring (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2014 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Identification and characterization of deforestation hot spots in Venezuela using MODIS satellite images Acta Amazonica Pacheco,Carlos Eduardo; Aguado,María Inmaculada; Mollicone,Danilo. Land cover changes over time as a result of human activity. Nowadays deforestation may be considered one of the main environmental problems. The objective of this study was to identify and characterize changes to forest cover in Venezuela between 2005-2010. Two maps of deforestation hot spots were generated on the basis of MODIS data, one using digital techniques and the other by means of direct visual interpretation by experts. These maps were validated against Landsat ETM+ images. The accuracy of the map obtained digitally was estimated by means of a confusion matrix. The overall accuracy of the maps obtained digitally was 92.5%. Expert opinions regarding the hot spots permitted the causes of deforestation to be identified. The main processes of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Monitoring; Land use; Land cover change. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000200004 Registros recuperados: 1 Primeira ... 1 ... Última

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