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		<issn>0100-204X</issn>
		<citationkey>AdamiMoRuFrFaDe:2007:PaAmEs</citationkey>
		<title>Painel amostral para estimativa de áreas agrícolas / Sampling frame for crop area estimation</title>
		<year>2007</year>
		<month>Jan.</month>
		<typeofwork>journal article</typeofwork>
		<secondarytype>PRE PN</secondarytype>
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		<size>2052 KiB</size>
		<author>Adami, Marcos,</author>
		<author>Moreira, Mauricio Alves,</author>
		<author>Rudorff, Bernardo Friedrich Theodor,</author>
		<author>Freitas, Corina da Costa,</author>
		<author>Faria, Rogério Teixeira de,</author>
		<author>Deppe, Flavio,</author>
		<group>DSR-INPE-MCT-BR</group>
		<group>DSR-INPE-MCT-BR</group>
		<group>DSR-INPE-MCT-BR</group>
		<group>DPI-INPE-MCT-BR</group>
		<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>86047-902 Londrina, PR, Brazil</affiliation>
		<affiliation>Instituto Tecnológico Simepar, Centro Politécnico da Universidade Federal do Paraná</affiliation>
		<electronicmailaddress>adami@ltid.inpe.br</electronicmailaddress>
		<electronicmailaddress>mauricio@ltid.inpe.br</electronicmailaddress>
		<electronicmailaddress>bernardo@ltid.inpe.br</electronicmailaddress>
		<electronicmailaddress>corina@dpi.inpe.br</electronicmailaddress>
		<electronicmailaddress>rtfaria@iapar.br</electronicmailaddress>
		<electronicmailaddress>deppe@simepar.br</electronicmailaddress>
		<e-mailaddress>adami@ltid.inpe.br</e-mailaddress>
		<journal>Pesquisa Agropecuária Brasileira</journal>
		<volume>42</volume>
		<number>1</number>
		<pages>81-88</pages>
		<progress>ePrint update</progress>
		<transferableflag>1</transferableflag>
		<contenttype>External Contribution</contenttype>
		<versiontype>publisher</versiontype>
		<keywords>estatísticas agrícolas, sensoriamento remoto, agricultural statistics, remote sensing, GIS.</keywords>
		<abstract>O objetivo deste trabalho foi desenvolver metodologia que integre sensoriamento remoto e sistema de informações geográficas (SIG) para criar um painel amostral e alocar segmentos regulares por meio de um sistema de amostragem aleatória estratificada. Diferentes estratos foram obtidos por meio da classificação de imagens de satélite. Em cada estrato foi realizado sorteio para a seleção dos segmentos amostrais, os quais foram visitados para delimitar as diversas culturas e estimar a área. Na estimativa da área plantada por cultura, para toda a região, utilizou-se o estimador por expansão direta por meio de um procedimento semi-automático. A metodologia reduziu tanto a subjetividade do percentual da área agrícola estimada no estrato, quanto o tempo de construção do painel amostral. ABSTRACT: The objective of this work was to develop a methodology in order to use remote sensing and Geographic Information System (GIS) to construct a sampling frame and to allocate regular segments in a region through a random stratified sampling system. The different strata were obtained through satellite image classification. In each stratum a drawing was carried out to select sample segments, which were field visited to identify the crop type and to estimate their area. In the area estimation for each crop, for the entire region, the direct expansion estimator through a semi-automated procedure was used. The methodology reduced both the subjectivity of the percentage of agricultural area estimation in the strata and the time to construct the sampling frame.</abstract>
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		<language>pt</language>
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		<dissemination>WEBSCI; PORTALCAPES; SCIELO.</dissemination>
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		<notes>Qualis A</notes>
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