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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
23/11/2016 |
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Actualizado : |
24/06/2021 |
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Autor : |
GUTIÉRREZ-VÉLEZ, V. H.; URIARTE, M.; DEFRIES, R.; PINEDO-VASQUEZ, M.; FERNANDES, K.; CECCATO, P.; BAETHGEN, W.; PADOCH, CH. |
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Afiliación : |
VICTOR H. GUTIÉRREZ-VÉLEZ, Earth Institute Center for Environmental Sustainability (EICES), Columbia University, USA; Center for International Forestry Research (CIFOR), Indonesia; MARÍA URIARTE, Department of Ecology, Evolution and Environmental Biology, Columbia University, USA; RUTH DEFRIES, Department of Ecology, Evolution and Environmental Biology, Columbia University, USA; MIGUEL PINEDO-VASQUEZ, Earth Institute Center for Environmental Sustainability (EICES), Columbia University, USA; KATIA FERNANDES, International Research Institute for Climate and Society, Columbia University, USA; PIETRO CECCATO, International Research Institute for Climate and Society, Columbia University, USA; WALTER BAETHGEN, International Research Institute for Climate and Society, Columbia University, USA; CHRISTINE PADOCH, Center for International Forestry Research (CIFOR), Indonesia. |
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Título : |
Land cover change interacts with drought severity to change fire regimes in Western Amazonia. |
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Fecha de publicación : |
2014 |
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Fuente / Imprenta : |
Ecological Applications, 2014, v. 24, no. 6, p. 1323?1340. |
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DOI : |
10.1890/13-2101.1 |
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Idioma : |
Inglés |
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Notas : |
Publication History: Issue online 1 September 2014 // Version of record online 1 September 2014 // Manuscript Accepted 18 December 2013 // Manuscript Received 12 November 2013 |
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Contenido : |
ABSTRACT.
Fire is becoming a pervasive driver of environmental change in Amazonia and is expected to intensify, given projected reductions in precipitation and forest cover. Understanding of the influence of post-deforestation land cover change on fires in Amazonia is limited, even though fires in cleared lands constitute a threat for ecosystems, agriculture, and human health. We used MODIS satellite data to map burned areas annually between 2001 and 2010. We then combined these maps with land cover and climate information to understand the influence of land cover change in cleared lands and dry-season severity on fire occurrence and spread in a focus area in the Peruvian Amazon. Fire occurrence, quantified as the probability of burning of individual 232-m spatial resolution MODIS pixels, was modeled as a function of the area of land cover types within each pixel, drought severity, and distance to roads. Fire spread, quantified as the number of pixels burned in 3 × 3 pixel windows around each focal burned pixel, was modeled as a function of land cover configuration and area, dry-season severity, and distance to roads. We found that vegetation regrowth and oil palm expansion are significantly correlated with fire occurrence, but that the magnitude and sign of the correlation depend on drought severity, successional stage of regrowing vegetation, and oil palm age. Burning probability increased with the area of nondegraded pastures, fallow, and young oil palm and decreased with larger extents of degraded pastures, secondary forests, and adult oil palm plantations. Drought severity had the strongest influence on fire occurrence, overriding the effectiveness of secondary forests, but not of adult plantations, to reduce fire occurrence in severely dry years. Overall, irregular and scattered land cover patches reduced fire spread but irregular and dispersed fallows and secondary forests increased fire spread during dry years. Results underscore the importance of land cover management for reducing fire proliferation in this landscape. Incentives for promoting natural regeneration and perennial crops in cleared lands might help to reduce fire risk if those areas are protected against burning in early stages of development and during severely dry years.
@ 2014 by the Ecological Society of America MenosABSTRACT.
Fire is becoming a pervasive driver of environmental change in Amazonia and is expected to intensify, given projected reductions in precipitation and forest cover. Understanding of the influence of post-deforestation land cover change on fires in Amazonia is limited, even though fires in cleared lands constitute a threat for ecosystems, agriculture, and human health. We used MODIS satellite data to map burned areas annually between 2001 and 2010. We then combined these maps with land cover and climate information to understand the influence of land cover change in cleared lands and dry-season severity on fire occurrence and spread in a focus area in the Peruvian Amazon. Fire occurrence, quantified as the probability of burning of individual 232-m spatial resolution MODIS pixels, was modeled as a function of the area of land cover types within each pixel, drought severity, and distance to roads. Fire spread, quantified as the number of pixels burned in 3 × 3 pixel windows around each focal burned pixel, was modeled as a function of land cover configuration and area, dry-season severity, and distance to roads. We found that vegetation regrowth and oil palm expansion are significantly correlated with fire occurrence, but that the magnitude and sign of the correlation depend on drought severity, successional stage of regrowing vegetation, and oil palm age. Burning probability increased with the area of nondegraded pastures, fallow, and young oil palm and decreased wit... Presentar Todo |
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Palabras claves : |
AMAZONIA; BAYESIAN STATISTICAL MODELING; CLIMATE CHANGE; MODIS; REMOTE SENSING BY SATELLITE. |
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Thesagro : |
CAMBIO CLIMÁTICO. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03378naa a2200301 a 4500
001 1056119
005 2021-06-24
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1890/13-2101.1$2DOI
100 1 $aGUTIÉRREZ-VÉLEZ, V. H.
245 $aLand cover change interacts with drought severity to change fire regimes in Western Amazonia.$h[electronic resource]
260 $c2014
500 $aPublication History: Issue online 1 September 2014 // Version of record online 1 September 2014 // Manuscript Accepted 18 December 2013 // Manuscript Received 12 November 2013
520 $aABSTRACT. Fire is becoming a pervasive driver of environmental change in Amazonia and is expected to intensify, given projected reductions in precipitation and forest cover. Understanding of the influence of post-deforestation land cover change on fires in Amazonia is limited, even though fires in cleared lands constitute a threat for ecosystems, agriculture, and human health. We used MODIS satellite data to map burned areas annually between 2001 and 2010. We then combined these maps with land cover and climate information to understand the influence of land cover change in cleared lands and dry-season severity on fire occurrence and spread in a focus area in the Peruvian Amazon. Fire occurrence, quantified as the probability of burning of individual 232-m spatial resolution MODIS pixels, was modeled as a function of the area of land cover types within each pixel, drought severity, and distance to roads. Fire spread, quantified as the number of pixels burned in 3 × 3 pixel windows around each focal burned pixel, was modeled as a function of land cover configuration and area, dry-season severity, and distance to roads. We found that vegetation regrowth and oil palm expansion are significantly correlated with fire occurrence, but that the magnitude and sign of the correlation depend on drought severity, successional stage of regrowing vegetation, and oil palm age. Burning probability increased with the area of nondegraded pastures, fallow, and young oil palm and decreased with larger extents of degraded pastures, secondary forests, and adult oil palm plantations. Drought severity had the strongest influence on fire occurrence, overriding the effectiveness of secondary forests, but not of adult plantations, to reduce fire occurrence in severely dry years. Overall, irregular and scattered land cover patches reduced fire spread but irregular and dispersed fallows and secondary forests increased fire spread during dry years. Results underscore the importance of land cover management for reducing fire proliferation in this landscape. Incentives for promoting natural regeneration and perennial crops in cleared lands might help to reduce fire risk if those areas are protected against burning in early stages of development and during severely dry years. @ 2014 by the Ecological Society of America
650 $aCAMBIO CLIMÁTICO
653 $aAMAZONIA
653 $aBAYESIAN STATISTICAL MODELING
653 $aCLIMATE CHANGE
653 $aMODIS
653 $aREMOTE SENSING BY SATELLITE
700 1 $aURIARTE, M.
700 1 $aDEFRIES, R.
700 1 $aPINEDO-VASQUEZ, M.
700 1 $aFERNANDES, K.
700 1 $aCECCATO, P.
700 1 $aBAETHGEN, W.
700 1 $aPADOCH, CH.
773 $tEcological Applications, 2014$gv. 24, no. 6, p. 1323?1340.
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
23/10/2018 |
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Tipo de producción científica : |
Documentos |
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Autor : |
LAVECCHIA, A.; ROEL, A.; MENDEZ, J. |
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Afiliación : |
ANDRES PASCUAL LAVECCHIA GONZALEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALVARO ROEL DELLAZOPPA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JULIO HECTOR MENDEZ LONGO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Momento de cosecha, parte II: Humedad crítica. |
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Fecha de publicación : |
1999 |
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Fuente / Imprenta : |
ln: INIA Tacuarembó. Programa Nacional de Arroz. Arroz: resultados experimentales zafra 1998-1999. Tacuarembó (Uruguay): INIA, 1999. |
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Páginas : |
p. 133-139 |
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Serie : |
(INIA Serie Actividades de Difusión ; 199) |
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Idioma : |
Español |
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Contenido : |
A través de los ensayos que se vienen realizando de momentos de cosecha, se mide la incidencia de factores tales como retiros de agua previos a la cosecha, o momentos de cosecha tomando un punto de referencia determinado, como puede ser la floración. Variando estos factores se mide su incidencia en variables tales como rendimientos de arroz cascar y rendimiento de entero. Es sobre este último parámetro que nos vamos a ocupar en esta parte, este es el segundo año de esta línea de trabajo. A modo de ayuda recordamos parte de los antecedentes. El rendimiento de entero del grano de arroz en el molino, se sabe puede ser afectado en el campo,
previo a la cosecha. Se sabe que bajo ciertas condiciones ambientales y condicionantes del grano, el grano puede ser fisurado, y luego en el proceso de molinado, producir granos quebrados. A su vez se sabe que uno de los hechos que puede disminución del rendimiento de entero. Las condiciones ambientales de cosecha son variables de año a año; a través de los ensayos de momentos de cosecha, es más difícil medir la incidencia de estos fenómenos sobre el rendimiento de entero.
Nos hemos planteado buscar cual es la humedad del grano a la cual no admite reabsorción de humedad sin afectar el rendimiento de entero, a esta humedad la llamaremos humedad crítica. |
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Palabras claves : |
RICE (ORYZA SATIVA L.). |
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Thesagro : |
ARROZ; COSECHA. |
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Asunto categoría : |
F01 Cultivo |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/11660/1/SAD199p133-139.pdf
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Marc : |
LEADER 01950naa a2200205 a 4500
001 1021076
005 2018-10-23
008 1999 bl uuuu u00u1 u #d
100 1 $aLAVECCHIA, A.
245 $aMomento de cosecha, parte II$bHumedad crítica.
260 $c1999
300 $ap. 133-139
490 $a(INIA Serie Actividades de Difusión ; 199)
520 $aA través de los ensayos que se vienen realizando de momentos de cosecha, se mide la incidencia de factores tales como retiros de agua previos a la cosecha, o momentos de cosecha tomando un punto de referencia determinado, como puede ser la floración. Variando estos factores se mide su incidencia en variables tales como rendimientos de arroz cascar y rendimiento de entero. Es sobre este último parámetro que nos vamos a ocupar en esta parte, este es el segundo año de esta línea de trabajo. A modo de ayuda recordamos parte de los antecedentes. El rendimiento de entero del grano de arroz en el molino, se sabe puede ser afectado en el campo, previo a la cosecha. Se sabe que bajo ciertas condiciones ambientales y condicionantes del grano, el grano puede ser fisurado, y luego en el proceso de molinado, producir granos quebrados. A su vez se sabe que uno de los hechos que puede disminución del rendimiento de entero. Las condiciones ambientales de cosecha son variables de año a año; a través de los ensayos de momentos de cosecha, es más difícil medir la incidencia de estos fenómenos sobre el rendimiento de entero. Nos hemos planteado buscar cual es la humedad del grano a la cual no admite reabsorción de humedad sin afectar el rendimiento de entero, a esta humedad la llamaremos humedad crítica.
650 $aARROZ
650 $aCOSECHA
653 $aRICE (ORYZA SATIVA L.)
700 1 $aROEL, A.
700 1 $aMENDEZ, J.
773 $tln: INIA Tacuarembó. Programa Nacional de Arroz. Arroz: resultados experimentales zafra 1998-1999. Tacuarembó (Uruguay): INIA, 1999.
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INIA Tacuarembó (TBO) |
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