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		<isbn>85-17-00016-1</isbn>
		<label>9063</label>
		<citationkey>CostaAccOliBurSil:2001:MaFiCa</citationkey>
		<title>Mapeamento da fitomassa da caatinga do núcleo de desertificação do Seridó, pelo Índice de Área de Planta (IAP) e o Índice de Vegetação da Diferença Normalizada (NDVI), obtido com dados do sensor Landsat 7 TM</title>
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		<year>2001</year>
		<secondarydate>20010425</secondarydate>
		<secondarytype>PRE CN</secondarytype>
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		<size>535 KiB</size>
		<author>Costa, Thomas Corrêa e Castro da,</author>
		<author>Accioly, Luciano José de Oliveira,</author>
		<author>Oliveira, Maria Aparecida José de,</author>
		<author>Burgos, Nivaldo,</author>
		<author>Silva, Flávio Hugo Barreto Batista da,</author>
		<affiliation>EMBRAPA. CNPS. UEP Recife.</affiliation>
		<affiliation>EMBRAPA. CNPS. UEP Recife.</affiliation>
		<affiliation>EMBRAPA. CNPS. UEP Recife.</affiliation>
		<affiliation>EMBRAPA. CNPS. UEP Recife.</affiliation>
		<affiliation>EMBRAPA. CNPS. UEP Recife.</affiliation>
		<editor>Krug, Thelma,</editor>
		<editor>Fonseca, Leila Maria Garcia,</editor>
		<e-mailaddress>erich@sid.inpe.br</e-mailaddress>
		<conferencename>Simpósio Brasileiro de Sensoriamento Remoto, 10 (SBSR).</conferencename>
		<conferencelocation>Foz do Iguaçu</conferencelocation>
		<date>21-26 abr. 2001</date>
		<publisher>INPE</publisher>
		<publisheraddress>São José dos Campos</publisheraddress>
		<pages>1563-1573</pages>
		<booktitle>Anais</booktitle>
		<tertiarytype>Sessão Técnica Oral</tertiarytype>
		<organization>Instituto Nacional de Pesquisas Espaciais</organization>
		<transferableflag>1</transferableflag>
		<keywords>VEGETAÇÃO, desertificação, mapeador temático (Landsat), índice de vegetação da diferença normalizada, índice de área foliar, NDVI, índice de área plantada, biomassa, Landsat 7, imagens Landsat, IAP, desertification, thematic mappers (Landsat), normalized difference vegetation index, leaf area index, plant area index, vegetation, biomass.</keywords>
		<abstract>The phytomass of an area under desertification process, as well as the elaboration of a phytomass inventory, the plant area index (PAI)and the normalised difference vegetation index (NDVI), were obtained by an empirical method using Landsat images. In the first stage, linear, logarithmic and non-linear models were developed and tested. Bush and tree specimens were considered in the study, so that most of the individuals that contribute to the spectral answer detected by satellite images were included. In a second stage, orbital parameters (NDVI)were used to map the PAI, which, by its turn, was used to map the phytomass, based on the relationship of this phytomass in function of PAI. The residues between measurements and estimates based on NDVI varied from 1 to 45, while the residues of total dry weight of phytomass per ha obtained by mapping and by dendrometrical equations varied from 4 to 78, with a large tendency of 257 in area of open Caatinga, due to the contribution of the herbaceous stratum in NDVI.</abstract>
		<area>SRE</area>
		<type>Vegetação</type>
		<language>pt</language>
		<targetfile>1563.1573.088.pdf</targetfile>
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		<url>http://marte.sid.inpe.br/rep-/dpi.inpe.br/lise/2001/09.24.09.09</url>
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