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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34P/3KBANK2
Repositóriosid.inpe.br/mtc-m21b/2015/09.29.16.03   (acesso restrito)
Última Atualização2017:07.21.16.38.58 (UTC) simone
Repositório de Metadadossid.inpe.br/mtc-m21b/2015/09.29.16.03.31
Última Atualização dos Metadados2018:06.04.02.55.43 (UTC) administrator
DOI10.1080/15481603.2015.1040227
ISSN1548-1603
Chave de CitaçãoMoreiraTeixGalv:2015:PoMuHy
TítuloPotential of multispectral and hyperspectral data to detect saline-exposed soils in Brazil
Ano2015
MêsJuly
Data de Acesso12 maio 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho852 KiB
2. Contextualização
Autor1 Moreira, L. C. J.
2 Teixeira, A. D. S.
3 Galvão, Lênio Soares
Identificador de Curriculo1
2
3 8JMKD3MGP5W/3C9JHLF
Grupo1
2
3 DSR-OBT-INPE-MCTI-GOV-BR
Afiliação1 Universidade Federal do Ceará (UFC)
2 Universidade Federal do Ceará (UFC)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor1
2
3 lenio.galvao@inpe.br
RevistaGIScience and Remote Sensing
Volume52
Número4
Páginas416-436
Nota SecundáriaB1_GEOCIÊNCIAS B1_CIÊNCIAS_AGRÁRIAS_I B2_INTERDISCIPLINAR B3_CIÊNCIAS_AMBIENTAIS
Histórico (UTC)2015-09-29 16:03:31 :: simone -> administrator ::
2016-06-21 17:56:54 :: administrator -> simone :: 2015
2017-07-21 16:38:58 :: simone -> administrator :: 2015
2018-06-04 02:55:43 :: administrator -> simone :: 2015
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-Chaveelectrical conductivity
hyperion
hyperspectral
NDVI
OLI/Landsat-8
soil salinity
ResumoIrrigation-induced soil salinization is an important land degradation process in northeastern Brazil. We used multispectral and hyperspectral sensors to detect saline-exposed soils in an area cultivated with irrigated rice. Spectral mixture analysis (SMA) was applied to Operational Land Imager (OLI)/Landsat-8 data to identify exposed soils. By measuring the electrical conductivity (EC) of soil samples from 53 sites, we classified them into saline and non-saline. The surface reflectance Thematic Mapper /Landsat-5 product was used to inspect the normalized difference vegetation index (NDVI) variations over time (1984-2011) at the sites. Using OLI/Landsat-8 and Hyperion/Earth Observing One, we obtained five salinity indices and scores from principal component analysis applied to exposed soil pixels. These indices along with the first principal component (PC1) were regressed against EC to estimate soil salinization. Different metrics and support vector machine (SVM) were tested to discriminate saline and non-saline soils. The results showed that exposed soils detected by SMA had NDVI with a lower mean and standard deviation over time in the saline areas due to vegetation growth limitation. NaCl absorption bands were not observed in the Hyperion spectra due to atmospheric water vapor. Therefore, soil salinity detected by OLI or Hyperion was due to soil brightness rather than absorption bands. Because most salinity indices and scores expressed brightness to some extent, they were correlated with EC, especially the Salinity Index and PC1. However, compared with OLI, the narrow-band salinity indices of Hyperion produced a lower root mean square error for EC estimates, better discrimination between saline and non-saline soils using the Euclidean distance and spectral angle metrics, and higher SVM classification accuracy.
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4. Condições de acesso e uso
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Grupo de Usuáriossimone
Grupo de Leitoresadministrator
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Visibilidadeshown
Política de Arquivamentodenypublisher denyfinaldraft
Permissão de Leituradeny from all and allow from 150.163
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Repositório Espelhourlib.net/www/2011/03.29.20.55
Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
Lista de Itens Citandosid.inpe.br/mtc-m21/2012/07.13.14.53.28 3
DivulgaçãoWEBSCI; SCOPUS.
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject targetfile tertiarymark tertiarytype url
7. Controle da descrição
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