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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
13/02/2020 |
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Data da última atualização: |
17/04/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LOUZADA, R. O.; BERGIER, I.; ASSINE, M. L. |
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Afiliação: |
RÔMULLO O. LOUZADA, Universidade Federal de Mato Grosso do Sul; IVAN BERGIER TAVARES DE LIMA, CPAP; MARIO L. ASSINE, Universidade Estadual Paulista, Rio Claro. |
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Título: |
Landscape changes in avulsive river systems: case study of Taquari River on Brazilian Pantanal wetlands. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Science of the Total Environment, v. 723, 138067, p. 1-12, 2020. |
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DOI: |
https://doi.org/10.1016/j.scitotenv.2020.138067 |
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Idioma: |
Inglês |
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Conteúdo: |
The Pantanal is an important active sedimentary basin in central South America where highly diverse flora and fauna are sustained by seasonal floods. Intense land use in the catchment areas enhanced sediment load and destabilized avulsive river systems in the plains. A well-known avulsion in the Taquari River during the 1980-90s, called 'Zé da Costa', has shifted the river mouth and drastically changed the nearby landscapes, making them difficult to map because of the hard access and the large variations in spectral and spatial attributes of raster data like Landsat images. Therefore, we developed a useful method to map and explore landscape changes in 'Zé da Costa' avulsion that combines geotagged field pictures, randomly selected high-resolution orbital truths, normalized difference vegetation index, digital elevation models, linear spectral mixture models and Landsat historical imagery in pixel-based and object-oriented supervised classifications. We found that bands in green, red, and near-infrared spectra provide better mapping results with object-oriented algorithms for deriving and studying temporal dry/wet ratio dynamics. The temporal analyses of the dry/wet ratio showed that avulsions in the Taquari River have the potential to change permanently the 'Zé da Costa' area into a dry landscape, making it susceptible for land use (deforestation and fire), except areas seasonally inundated by the floods of the Paraguay River. Overall, our method might be also useful for long-term studies of land use and climate change in avulsive rivers in wetlands around the world. MenosThe Pantanal is an important active sedimentary basin in central South America where highly diverse flora and fauna are sustained by seasonal floods. Intense land use in the catchment areas enhanced sediment load and destabilized avulsive river systems in the plains. A well-known avulsion in the Taquari River during the 1980-90s, called 'Zé da Costa', has shifted the river mouth and drastically changed the nearby landscapes, making them difficult to map because of the hard access and the large variations in spectral and spatial attributes of raster data like Landsat images. Therefore, we developed a useful method to map and explore landscape changes in 'Zé da Costa' avulsion that combines geotagged field pictures, randomly selected high-resolution orbital truths, normalized difference vegetation index, digital elevation models, linear spectral mixture models and Landsat historical imagery in pixel-based and object-oriented supervised classifications. We found that bands in green, red, and near-infrared spectra provide better mapping results with object-oriented algorithms for deriving and studying temporal dry/wet ratio dynamics. The temporal analyses of the dry/wet ratio showed that avulsions in the Taquari River have the potential to change permanently the 'Zé da Costa' area into a dry landscape, making it susceptible for land use (deforestation and fire), except areas seasonally inundated by the floods of the Paraguay River. Overall, our method might be also useful for lo... Mostrar Tudo |
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Thesagro: |
Inundação; Mudança Climática; Rio; Sensoriamento Remoto. |
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Thesaurus Nal: |
Climate change; Landscape ecology; Remote sensing; River water; Temporal variation. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02420naa a2200265 a 4500
001 2120220
005 2020-04-17
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scitotenv.2020.138067$2DOI
100 1 $aLOUZADA, R. O.
245 $aLandscape changes in avulsive river systems$bcase study of Taquari River on Brazilian Pantanal wetlands.$h[electronic resource]
260 $c2020
520 $aThe Pantanal is an important active sedimentary basin in central South America where highly diverse flora and fauna are sustained by seasonal floods. Intense land use in the catchment areas enhanced sediment load and destabilized avulsive river systems in the plains. A well-known avulsion in the Taquari River during the 1980-90s, called 'Zé da Costa', has shifted the river mouth and drastically changed the nearby landscapes, making them difficult to map because of the hard access and the large variations in spectral and spatial attributes of raster data like Landsat images. Therefore, we developed a useful method to map and explore landscape changes in 'Zé da Costa' avulsion that combines geotagged field pictures, randomly selected high-resolution orbital truths, normalized difference vegetation index, digital elevation models, linear spectral mixture models and Landsat historical imagery in pixel-based and object-oriented supervised classifications. We found that bands in green, red, and near-infrared spectra provide better mapping results with object-oriented algorithms for deriving and studying temporal dry/wet ratio dynamics. The temporal analyses of the dry/wet ratio showed that avulsions in the Taquari River have the potential to change permanently the 'Zé da Costa' area into a dry landscape, making it susceptible for land use (deforestation and fire), except areas seasonally inundated by the floods of the Paraguay River. Overall, our method might be also useful for long-term studies of land use and climate change in avulsive rivers in wetlands around the world.
650 $aClimate change
650 $aLandscape ecology
650 $aRemote sensing
650 $aRiver water
650 $aTemporal variation
650 $aInundação
650 $aMudança Climática
650 $aRio
650 $aSensoriamento Remoto
700 1 $aBERGIER, I.
700 1 $aASSINE, M. L.
773 $tScience of the Total Environment$gv. 723, 138067, p. 1-12, 2020.
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Embrapa Pantanal (CPAP) |
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| 1. |  | GIROTTO, M. V. F.; SILVA, C. M. da; SAMPAIO, F. G.; STECH, J. L.; MENDES, G. O.; DALSASSO, R. F.; BODELÃO, A. G; MATOS, F. T. de; MESSIAS, J. A. Plataformas de coleta de dados para monitoramento ambiental de pisciculturas em tanques-rede. Jaguariúna: Embrapa Meio Ambiente, 2021. 40 p. il. color. (Embrapa Meio Ambiente. Documentos, 131).| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Pesca e Aquicultura. |
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