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		<isbn>978-85-17-00088-1</isbn>
		<label>59911</label>
		<citationkey>LandauGuimSouz:2017:TrAnCr</citationkey>
		<title>Trinta anos de crescimento da agricultura irrigada por pivôs centrais na região do Matopiba</title>
		<format>Internet</format>
		<year>2017</year>
		<secondarytype>PRE CN</secondarytype>
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		<author>Landau, Elena Charlotte,</author>
		<author>Guimarães, Daniel Pereira,</author>
		<author>Souza, Denise Luz de,</author>
		<electronicmailaddress>charlotte.landau@embrapa.br</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>4243-4250</pages>
		<booktitle>Anais</booktitle>
		<organization>Instituto Nacional de Pesquisas Espaciais (INPE)</organization>
		<transferableflag>1</transferableflag>
		<abstract>The areas irrigated by center pivots in 1985, 1990, 1995, 2000, 2005, 2010 and 2015 in the Region of MATOPIBA (Brazil) were digitalized through visual identification based on a mosaic formed by images of the satellite Landsat 4, 5, 7, and 8, displayed using the software Google Earth. There was a significant expansion of the area irrigated by center pivots in this period, that  changed from 13 to 1,548 pivots between 1985 and 2015, when the irrigated area increased from 1,418 ha to 160,172 ha. More than half of the center pivots occurred in Microregion of Barreiras and Santa Maria da Vitoria, in the western part of the State of Bahia, in the Middle São Francisco River Basin. The municipalities with the highest density and relative area occupied by center pivots were: Barreiras / BA, Luis Eduardo Magalhães / BA, São Félix do Coribe / BA and São Desidério / BA. They were also the municipalities with the highest increase in area irrigated by center pivots considering the analyzed period. In the States of Tocantins, Piauí and Maranhão, the municipalities with the highest relative area occupied by center pivots were respectively Pedro Afonso / TO, Guadalupe / PI and Riachão / MA. The region is considered of great interest to expansion of the agricultural frontier of Brazil. Environmental conservation should be considered for the future expansion of the irrigated area in the Region.</abstract>
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