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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
02/12/2014 |
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Data da última atualização: |
02/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ANDRADE, R. G.; TEIXEIRA, A. H. de C.; SANO, E. E.; LEIVAS, J. F.; VICTORIA, D. de C.; NOGUEIRA, S. F. |
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Afiliação: |
RICARDO GUIMARAES ANDRADE, CNPM; ANTONIO HERIBERTO DE C TEIXEIRA, CNPM; EDSON EYJI SANO, CPAC; JANICE FREITAS LEIVAS, CNPM; DANIEL DE CASTRO VICTORIA, CNPM; SANDRA FURLAN NOGUEIRA, CNPM. |
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Título: |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Proceedings of SPIE, v. 9239, p. 92391Z-1 - 92391Z-7, 2014. |
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ISBN: |
0277-786X |
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DOI: |
10.1117/12.2067225 |
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Idioma: |
Inglês |
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Notas: |
Presented at the 16th Remote Sensing for Agriculture, Ecosystems, and Hydrology. |
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Conteúdo: |
The Alto Tocantins watershed, located in the Brazilian Savanna (Cerrado biome), is under an intense land use and occupation process, causing increased pressure on natural resources. Pasture areas in the region are highly relevant to the rational use of natural resources in order to achieve economic and environmental sustainability. In this context, remote sensing techniques have been essential for obtaining information relevant to the assessment of vegetation conditions on a large scale. This study aimed to apply this tool in conjunction with field measurements to evaluate evapotranspiration (ET) against pasture degradation indicators. The SAFER algorithm was applied to estimate ET using MODIS images and weather station data from year 2012. Results showed that ET was lower in degraded pastures. It is noteworthy that during low rainfall period, ET values were 22.2% lower in relation to non-degraded pastures. This difference in ET indicates changes in the partition of the energy balance and may impact the microclimate. These results may contribute to public policies that aim to reduce the loss of the productive potential of pastures. |
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Palavras-Chave: |
SAFER. |
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Thesaurus Nal: |
Evapotranspiration; Land use; Vegetation. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/112783/1/4201.pdf
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Marc: |
LEADER 02015naa a2200265 a 4500
001 2001283
005 2014-12-02
008 2014 bl uuuu u00u1 u #d
022 $a0277-786X
024 7 $a10.1117/12.2067225$2DOI
100 1 $aANDRADE, R. G.
245 $aPasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed.$h[electronic resource]
260 $c2014
500 $aPresented at the 16th Remote Sensing for Agriculture, Ecosystems, and Hydrology.
520 $aThe Alto Tocantins watershed, located in the Brazilian Savanna (Cerrado biome), is under an intense land use and occupation process, causing increased pressure on natural resources. Pasture areas in the region are highly relevant to the rational use of natural resources in order to achieve economic and environmental sustainability. In this context, remote sensing techniques have been essential for obtaining information relevant to the assessment of vegetation conditions on a large scale. This study aimed to apply this tool in conjunction with field measurements to evaluate evapotranspiration (ET) against pasture degradation indicators. The SAFER algorithm was applied to estimate ET using MODIS images and weather station data from year 2012. Results showed that ET was lower in degraded pastures. It is noteworthy that during low rainfall period, ET values were 22.2% lower in relation to non-degraded pastures. This difference in ET indicates changes in the partition of the energy balance and may impact the microclimate. These results may contribute to public policies that aim to reduce the loss of the productive potential of pastures.
650 $aEvapotranspiration
650 $aLand use
650 $aVegetation
653 $aSAFER
700 1 $aTEIXEIRA, A. H. de C.
700 1 $aSANO, E. E.
700 1 $aLEIVAS, J. F.
700 1 $aVICTORIA, D. de C.
700 1 $aNOGUEIRA, S. F.
773 $tProceedings of SPIE$gv. 9239, p. 92391Z-1 - 92391Z-7, 2014.
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Registro original: |
Embrapa Territorial (CNPM) |
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Origem |
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Classificação |
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Registro |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido; Embrapa Unidades Centrais. |
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Data corrente: |
23/10/2017 |
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Data da última atualização: |
19/04/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
DINIZ, W. J. da S.; SILVA, T. G. F. da; FERREIRA, J. M. da S.; SANTOS, D. C. dos; MOURA, M. S. B. de; ARAUJO, G. G. L. de; ZOLNIER, S. |
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Afiliação: |
Wellington Jairo da Silva Diniz, Universidade Federal Rural de Pernambuco/Unidade Acadêmica de Serra Talhada; Thieres George Freire da Silva, Universidade Federal Rural de Pernambuco/Unidade Acadêmica de Serra Talhada; Jadna Mylena da Silva Ferreira, Universidade Federal Rural de Pernambuco/Unidade Acadêmica de Serra Talhada; Djalma Cordeiro dos Santos, Instituto Agronômico de Pernambuco; MAGNA SOELMA BESERRA DE MOURA, CPATSA; GHERMAN GARCIA LEAL DE ARAUJO, CPATSA; Sérgio Zolnier, Universidade Federal de Viçosa. |
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Título: |
Forage cactus-sorghum intercropping at different irrigation water depths in the Brazilian Semiarid Region. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 9, p. 724-733, ago. 2017. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Consórcio palma-sorgo irrigado com diferentes lâminas de água no Semiárido brasileiro. |
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Conteúdo: |
The objective of this work was to evaluate the productive performance, biological efficiency, and the competitive ability of the forage cactus-sorghum intercropping under different irrigation depths with saline water in the Brazilian Semiarid Region. The experiment was carried out in Serra Talhada, in the state of Pernambuco, between 2014 and 2015, in a randomized complete block design, with four replicates, and a 5x3 factorial arrangement in split plots, with one year of forage cactus cycle and two years of sorghum cycles. The plots were composed by four irrigation water depths based on the fractions of 25, 50, 75, and 100% of the reference evapotranspiration, besides dry conditions; and the subplots consisted of three cropping systems (single crop of forage cactus, single crop of sorghum, and intercropping of forage cactus-sorghum). The increase of water irrigation depths increased the yields of sorghum in single crop and of the forage cactus-sorghum intercropping. The intercropping system promoted production stability with a higher system productivity index (SPI) for forage cactus-sorghum intercropping (6,279.02 kg ha-1 DM) than for forage cactus in single crop (4,626.98 kg ha-1 DM). The relative density coefficient (12.33) was indicative of the great compatibility of the intercropping system. The forage cactus-sorghum association shows biological advantage and competitiveness capacity, with a higher productive index than their monocultures. |
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Palavras-Chave: |
Biological efficiency; Competitive ability; Desempenho agronômico; Eficiência biológica; Habilidade competitiva; Irrigação com água salina; Saline water irrigation. |
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Thesagro: |
Sorghum Bicolor. |
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Thesaurus NAL: |
Agronomic traits; Opuntia stricta. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/175710/1/Forage-cactus-sorghum-intercropping.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/165377/1/Forage-cactus-sorghum-intercropping.pdf
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Marc: |
LEADER 02597naa a2200325 a 4500
001 2088419
005 2018-04-19
008 2017 bl uuuu u00u1 u #d
100 1 $aDINIZ, W. J. da S.
245 $aForage cactus-sorghum intercropping at different irrigation water depths in the Brazilian Semiarid Region.
260 $c2017
500 $aTítulo em português: Consórcio palma-sorgo irrigado com diferentes lâminas de água no Semiárido brasileiro.
520 $aThe objective of this work was to evaluate the productive performance, biological efficiency, and the competitive ability of the forage cactus-sorghum intercropping under different irrigation depths with saline water in the Brazilian Semiarid Region. The experiment was carried out in Serra Talhada, in the state of Pernambuco, between 2014 and 2015, in a randomized complete block design, with four replicates, and a 5x3 factorial arrangement in split plots, with one year of forage cactus cycle and two years of sorghum cycles. The plots were composed by four irrigation water depths based on the fractions of 25, 50, 75, and 100% of the reference evapotranspiration, besides dry conditions; and the subplots consisted of three cropping systems (single crop of forage cactus, single crop of sorghum, and intercropping of forage cactus-sorghum). The increase of water irrigation depths increased the yields of sorghum in single crop and of the forage cactus-sorghum intercropping. The intercropping system promoted production stability with a higher system productivity index (SPI) for forage cactus-sorghum intercropping (6,279.02 kg ha-1 DM) than for forage cactus in single crop (4,626.98 kg ha-1 DM). The relative density coefficient (12.33) was indicative of the great compatibility of the intercropping system. The forage cactus-sorghum association shows biological advantage and competitiveness capacity, with a higher productive index than their monocultures.
650 $aAgronomic traits
650 $aOpuntia stricta
650 $aSorghum Bicolor
653 $aBiological efficiency
653 $aCompetitive ability
653 $aDesempenho agronômico
653 $aEficiência biológica
653 $aHabilidade competitiva
653 $aIrrigação com água salina
653 $aSaline water irrigation
700 1 $aSILVA, T. G. F. da
700 1 $aFERREIRA, J. M. da S.
700 1 $aSANTOS, D. C. dos
700 1 $aMOURA, M. S. B. de
700 1 $aARAUJO, G. G. L. de
700 1 $aZOLNIER, S.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 52, n. 9, p. 724-733, ago. 2017.
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Embrapa Semiárido (CPATSA) |
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