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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
21/11/2013 |
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Data da última atualização: |
21/11/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TEIXEIRA, A. H. de C.; SCHERER-WARREN, M.; HERNANDEZ, F. B. T.; ANDRADE, R. G.; LEIVAS, J. F. |
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Afiliação: |
ANTONIO HERIBERTO DE C TEIXEIRA, CNPM; MORRIS SCHERER-WARREN, ANA; FERNANDO B. T. HERNANDEZ, UNESP; RICARDO GUIMARAES ANDRADE, CNPM; JANICE FREITAS LEIVAS, CNPM. |
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Título: |
Large-scale water productivity assessments with MODIS images in a changing semi-arid environment: a Brazilian case study. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Remote Sensing, v. 11, n. 3, p. 5783-5804, 2013. |
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ISBN: |
2072-4292 |
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DOI: |
10.3390/rs5115783 |
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Idioma: |
Português |
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Conteúdo: |
In the Brazilian semi-arid region, the intensification of agriculture results in a change of natural vegetation by irrigated crops. To quantify the contrast between these two ecosystems, the large-scale values of water productivity components were modelled in Petrolina (PE) and Juazeiro (BA) municipalities. The SAFER (Simple Algorithm For Evapotranspiration Retrieving) algorithm was used to acquire evapotranspiration (ET), while the Monteith's radiation model was applied for estimating the biomass production (BIO). Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images were used together with agro-meteorological data. In Petrolina and Juazeiro, the mean monthly ET values for irrigated crops were 938 and 739 mm·month−1, with the corresponding ones for natural vegetation of 385 and 194 mm·month−1.Water productivity (WP) was analysed by the ratio of BIO to ET, defined here as the ratio of the net benefits from the mixed agricultural systems to the amount of water required for producing those benefits. The highest incremental WP values, as a result of the irrigated crops introduction, happened outside the rainy period. More spatial WP uniformity occurred in natural vegetation, when comparing with irrigated crops. The most frequent WP values in Petrolina were between 1.6 and 2.2 kg·m−3 while in Juazeiro this range was from 1.0 to 1.6 kg·m−3. The differences between the municipalities can be mainly explained by differences in precipitation and soil water storages conditions, promoting better rainfall use efficiency by the natural vegetation in the first one. The results of the current research are important for appraising the land use change impacts in situations of expanding irrigation areas. MenosIn the Brazilian semi-arid region, the intensification of agriculture results in a change of natural vegetation by irrigated crops. To quantify the contrast between these two ecosystems, the large-scale values of water productivity components were modelled in Petrolina (PE) and Juazeiro (BA) municipalities. The SAFER (Simple Algorithm For Evapotranspiration Retrieving) algorithm was used to acquire evapotranspiration (ET), while the Monteith's radiation model was applied for estimating the biomass production (BIO). Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images were used together with agro-meteorological data. In Petrolina and Juazeiro, the mean monthly ET values for irrigated crops were 938 and 739 mm·month−1, with the corresponding ones for natural vegetation of 385 and 194 mm·month−1.Water productivity (WP) was analysed by the ratio of BIO to ET, defined here as the ratio of the net benefits from the mixed agricultural systems to the amount of water required for producing those benefits. The highest incremental WP values, as a result of the irrigated crops introduction, happened outside the rainy period. More spatial WP uniformity occurred in natural vegetation, when comparing with irrigated crops. The most frequent WP values in Petrolina were between 1.6 and 2.2 kg·m−3 while in Juazeiro this range was from 1.0 to 1.6 kg·m−3. The differences between the municipalities can be mainly explained by differences in precipitation a... Mostrar Tudo |
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Palavras-Chave: |
Net radiation; Surface resistance. |
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Thesaurus Nal: |
Biomass production; Evapotranspiration. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/92867/1/remotesensing-05-05783.pdf
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Marc: |
LEADER 02516naa a2200241 a 4500
001 1971815
005 2013-11-21
008 2013 bl uuuu u00u1 u #d
022 $a2072-4292
024 7 $a10.3390/rs5115783$2DOI
100 1 $aTEIXEIRA, A. H. de C.
245 $aLarge-scale water productivity assessments with MODIS images in a changing semi-arid environment$ba Brazilian case study.$h[electronic resource]
260 $c2013
520 $aIn the Brazilian semi-arid region, the intensification of agriculture results in a change of natural vegetation by irrigated crops. To quantify the contrast between these two ecosystems, the large-scale values of water productivity components were modelled in Petrolina (PE) and Juazeiro (BA) municipalities. The SAFER (Simple Algorithm For Evapotranspiration Retrieving) algorithm was used to acquire evapotranspiration (ET), while the Monteith's radiation model was applied for estimating the biomass production (BIO). Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images were used together with agro-meteorological data. In Petrolina and Juazeiro, the mean monthly ET values for irrigated crops were 938 and 739 mm·month−1, with the corresponding ones for natural vegetation of 385 and 194 mm·month−1.Water productivity (WP) was analysed by the ratio of BIO to ET, defined here as the ratio of the net benefits from the mixed agricultural systems to the amount of water required for producing those benefits. The highest incremental WP values, as a result of the irrigated crops introduction, happened outside the rainy period. More spatial WP uniformity occurred in natural vegetation, when comparing with irrigated crops. The most frequent WP values in Petrolina were between 1.6 and 2.2 kg·m−3 while in Juazeiro this range was from 1.0 to 1.6 kg·m−3. The differences between the municipalities can be mainly explained by differences in precipitation and soil water storages conditions, promoting better rainfall use efficiency by the natural vegetation in the first one. The results of the current research are important for appraising the land use change impacts in situations of expanding irrigation areas.
650 $aBiomass production
650 $aEvapotranspiration
653 $aNet radiation
653 $aSurface resistance
700 1 $aSCHERER-WARREN, M.
700 1 $aHERNANDEZ, F. B. T.
700 1 $aANDRADE, R. G.
700 1 $aLEIVAS, J. F.
773 $tRemote Sensing$gv. 11, n. 3, p. 5783-5804, 2013.
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Registro original: |
Embrapa Territorial (CNPM) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
29/08/2019 |
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Data da última atualização: |
29/08/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ITALIANO, E. C.; SILVA, J. R. da. |
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Afiliação: |
EDSON CÂMARA ITALIANO, UEPAE DE MANAUS; J. R. DA SILVA, EMATER-Manaus. |
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Título: |
Rendimento forrageiro e composição química do capim quicuio-da-Amazônia (Brachiaria humidicola) em diferentes estádios de crescimento. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
In: SIMPÓSIO DO TRÓPICO ÚMIDO, 1., 1984, Belém, PA. Anais. Belém, PA: EMBRAPA-CPATU, 1986. |
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Volume: |
v. 5 |
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Páginas: |
p. 101-107. |
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Idioma: |
Português |
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Thesagro: |
Forragem. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/201409/1/ID-5765-4-p101.pdf
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Marc: |
LEADER 00532nam a2200145 a 4500
001 2111717
005 2019-08-29
008 1986 bl uuuu u00u1 u #d
100 1 $aITALIANO, E. C.
245 $aRendimento forrageiro e composição química do capim quicuio-da-Amazônia (Brachiaria humidicola) em diferentes estádios de crescimento.
260 $aIn: SIMPÓSIO DO TRÓPICO ÚMIDO, 1., 1984, Belém, PA. Anais. Belém, PA: EMBRAPA-CPATU$c1986
300 $ap. 101-107. v. 5
490 $vv. 5
650 $aForragem
700 1 $aSILVA, J. R. da
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