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Registro Completo |
Biblioteca(s): |
Embrapa Territorial. |
Data corrente: |
21/11/2013 |
Data da última atualização: |
21/11/2013 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
TEIXEIRA, A. H. de C.; SCHERER-WARREN, M.; HERNANDEZ, F. B. T.; ANDRADE, R. G.; LEIVAS, J. F. |
Afiliação: |
ANTONIO HERIBERTO DE C TEIXEIRA, CNPM; MORRIS SCHERER-WARREN, ANA; FERNANDO B. T. HERNANDEZ, UNESP; RICARDO GUIMARAES ANDRADE, CNPM; JANICE FREITAS LEIVAS, CNPM. |
Título: |
Large-scale water productivity assessments with MODIS images in a changing semi-arid environment: a Brazilian case study. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Remote Sensing, v. 11, n. 3, p. 5783-5804, 2013. |
ISBN: |
2072-4292 |
DOI: |
10.3390/rs5115783 |
Idioma: |
Português |
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 |
Palavras-Chave: |
Net radiation; Surface resistance. |
Thesaurus Nal: |
Biomass production; Evapotranspiration. |
Categoria do assunto: |
-- |
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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Embrapa Territorial (CNPM) |
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Registro Completo
Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
18/09/2019 |
Data da última atualização: |
18/09/2019 |
Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
Autoria: |
EBERHARDT, P. E. R.; BELLINAZO, P. L.; BEVILAQUA, G. A. P.; PINHEIRO, R. de A.; SCHUCH, L. O. B. |
Afiliação: |
Paulo Eduardo Rocha Eberhardt; Pedro Lima Bellinazo; GILBERTO ANTONIO P BEVILAQUA, CPACT; Régis de Araujo Pinheiro; Luis Osmar Braga Schuch. |
Título: |
Recobrimento de sementes de arroz com agrominerais. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Pelotas: Embrapa Clima Temperado, 2019. |
Série: |
(Embrapa Clima Temperado, Boletim de Pesquisa e Desenvolvimento, 320) |
Idioma: |
Português |
Thesagro: |
Arroz; Recurso Mineral; Rocha; Semente. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/202102/1/BOLETIM-320.pdf
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Marc: |
LEADER 00627nam a2200205 a 4500 001 2112269 005 2019-09-18 008 2019 bl uuuu u0uu1 u #d 100 1 $aEBERHARDT, P. E. R. 245 $aRecobrimento de sementes de arroz com agrominerais.$h[electronic resource] 260 $aPelotas: Embrapa Clima Temperado$c2019 490 $a(Embrapa Clima Temperado, Boletim de Pesquisa e Desenvolvimento, 320) 650 $aArroz 650 $aRecurso Mineral 650 $aRocha 650 $aSemente 700 1 $aBELLINAZO, P. L. 700 1 $aBEVILAQUA, G. A. P. 700 1 $aPINHEIRO, R. de A. 700 1 $aSCHUCH, L. O. B.
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