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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
11/12/2017 |
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Data da última atualização: |
03/05/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
TEIXEIRA, A. H. de C.; LEIVAS, J. F.; RONQUIM, C. C.; GARCON, E. A. M.; SILVA, G. B. S. da. |
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Afiliação: |
ANTONIO HERIBERTO DE C TEIXEIRA, CNPM; JANICE FREITAS LEIVAS, CNPM; CARLOS CESAR RONQUIM, CNPM; EDLENE APARECIDA MONTEIRO GARCON, CNPM; GUSTAVO BAYMA SIQUEIRA DA SILVA, CNPM. |
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Título: |
Water and vegetation indices by using MODIS products for eucalyptus, pasture, and natural ecosystems in the eastern São Paulo state, Southeast Brazil. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
In: REMOTE SENSING FOR AGRICULTURE, ECOSYSTEMS, AND HYDROLOGY, 19., 2017, Warsaw. Proceedings... Warsaw: SPIE, 2017. (SPIE proceedings, v. 10421). |
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Páginas: |
p. 1042112-1-1042112-12. |
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ISBN: |
0277-786X |
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DOI: |
10.1117/12.2277930 |
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Idioma: |
Inglês |
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Conteúdo: |
Eucalyptus (Ec) and pasture (Pt) are expanding while natural vegetation (Nv) are losing space in the Paraíba Valley, eastern side of the São Paulo state, Southeast Brazil. For quantification of water and vegetation conditions, the MODIS product MOD13Q1 was used together with a net of weather stations and vegetation land masks during the year 2015. The SAFER algorithm was applied to retrieve the actual evapotranspiration (ET), which was combined with the Monteithꞌs radiation use efficiency (RUE) model to estimate the biomass production (BIO). Three moisture indices were applied, the climatic water balance ratio (WBr), the ratio of precipitation (P) to ET, the water balance deficit (WBd), the difference between P and ET, and the evapotranspiration ratio (ETr), the ratio of ET to the reference evapotranspiration (ET0). On the one hand, the highest ET rates for the Ec ecosystem should be a negative aspect under water scarcity conditions; however, it presented the best water productivity. Although the Ec ecosystem presenting the lowest WBr and WBd values, it had the highest ETr, averaging 0.92, when comparing to those for Nv (0.88) and Pt (0.79). These results indicated that eucalyptus plants have greater ability of conserving soil moisture in their root zones, increasing WP, when comparing with Pt and Nv ecosystems. These water relationships are relevant issues under the land-use change conditions in the Paraiba Valley, confirming the suitability of using the MODIS products together with weather stations to study the ecosystem dynamics. MenosEucalyptus (Ec) and pasture (Pt) are expanding while natural vegetation (Nv) are losing space in the Paraíba Valley, eastern side of the São Paulo state, Southeast Brazil. For quantification of water and vegetation conditions, the MODIS product MOD13Q1 was used together with a net of weather stations and vegetation land masks during the year 2015. The SAFER algorithm was applied to retrieve the actual evapotranspiration (ET), which was combined with the Monteithꞌs radiation use efficiency (RUE) model to estimate the biomass production (BIO). Three moisture indices were applied, the climatic water balance ratio (WBr), the ratio of precipitation (P) to ET, the water balance deficit (WBd), the difference between P and ET, and the evapotranspiration ratio (ETr), the ratio of ET to the reference evapotranspiration (ET0). On the one hand, the highest ET rates for the Ec ecosystem should be a negative aspect under water scarcity conditions; however, it presented the best water productivity. Although the Ec ecosystem presenting the lowest WBr and WBd values, it had the highest ETr, averaging 0.92, when comparing to those for Nv (0.88) and Pt (0.79). These results indicated that eucalyptus plants have greater ability of conserving soil moisture in their root zones, increasing WP, when comparing with Pt and Nv ecosystems. These water relationships are relevant issues under the land-use change conditions in the Paraiba Valley, confirming the suitability of using the MODIS produc... Mostrar Tudo |
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Palavras-Chave: |
Land use changes. |
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Thesaurus Nal: |
Ecosystems; Remote sensing; Water resources. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02463nam a2200241 a 4500
001 2082020
005 2019-05-03
008 2017 bl uuuu u00u1 u #d
022 $a0277-786X
024 7 $a10.1117/12.2277930$2DOI
100 1 $aTEIXEIRA, A. H. de C.
245 $aWater and vegetation indices by using MODIS products for eucalyptus, pasture, and natural ecosystems in the eastern São Paulo state, Southeast Brazil.$h[electronic resource]
260 $aIn: REMOTE SENSING FOR AGRICULTURE, ECOSYSTEMS, AND HYDROLOGY, 19., 2017, Warsaw. Proceedings... Warsaw: SPIE, 2017. (SPIE proceedings, v. 10421).$c2017
300 $ap. 1042112-1-1042112-12.
520 $aEucalyptus (Ec) and pasture (Pt) are expanding while natural vegetation (Nv) are losing space in the Paraíba Valley, eastern side of the São Paulo state, Southeast Brazil. For quantification of water and vegetation conditions, the MODIS product MOD13Q1 was used together with a net of weather stations and vegetation land masks during the year 2015. The SAFER algorithm was applied to retrieve the actual evapotranspiration (ET), which was combined with the Monteithꞌs radiation use efficiency (RUE) model to estimate the biomass production (BIO). Three moisture indices were applied, the climatic water balance ratio (WBr), the ratio of precipitation (P) to ET, the water balance deficit (WBd), the difference between P and ET, and the evapotranspiration ratio (ETr), the ratio of ET to the reference evapotranspiration (ET0). On the one hand, the highest ET rates for the Ec ecosystem should be a negative aspect under water scarcity conditions; however, it presented the best water productivity. Although the Ec ecosystem presenting the lowest WBr and WBd values, it had the highest ETr, averaging 0.92, when comparing to those for Nv (0.88) and Pt (0.79). These results indicated that eucalyptus plants have greater ability of conserving soil moisture in their root zones, increasing WP, when comparing with Pt and Nv ecosystems. These water relationships are relevant issues under the land-use change conditions in the Paraiba Valley, confirming the suitability of using the MODIS products together with weather stations to study the ecosystem dynamics.
650 $aEcosystems
650 $aRemote sensing
650 $aWater resources
653 $aLand use changes
700 1 $aLEIVAS, J. F.
700 1 $aRONQUIM, C. C.
700 1 $aGARCON, E. A. M.
700 1 $aSILVA, G. B. S. da
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Embrapa Territorial (CNPM) |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
24/07/2020 |
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Data da última atualização: |
24/07/2020 |
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Tipo da produção científica: |
Artigo de Divulgação na Mídia |
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Autoria: |
MIRANDA, E. E. de. |
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Afiliação: |
EVARISTO EDUARDO DE MIRANDA, CNPM. |
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Título: |
Brasil preserva 70% de suas florestas primárias. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Revista ECO-21, v. 121, dez. 2006. |
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Idioma: |
Português |
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Thesagro: |
Desmatamento. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/214811/1/5297.pdf
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Marc: |
LEADER 00331nam a2200109 a 4500
001 2124005
005 2020-07-24
008 2006 bl uuuu u00u1 u #d
100 1 $aMIRANDA, E. E. de
245 $aBrasil preserva 70% de suas florestas primárias.$h[electronic resource]
260 $aRevista ECO-21, v. 121, dez. 2006.$c2006
650 $aDesmatamento
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