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Registro Completo |
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Biblioteca(s): |
Embrapa Amapá; Embrapa Amazônia Oriental; Embrapa Solos; Embrapa Unidades Centrais. |
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Data corrente: |
15/10/1999 |
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Data da última atualização: |
10/11/2016 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
OLIVEIRA JUNIOR, R. C. de; RODRIGUES, T. E.; VALENTE, M. A. |
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Afiliação: |
RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; TARCISIO EWERTON RODRIGUES, CPATU; MOACIR AZEVEDO VALENTE, CPATU. |
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Título: |
Aptidão agrícola das terras do Campo Experimental dos Cerrados da Embrapa Amapá, Estado do Amapá. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Belém, PA: EMBRAPA-CPATU, 1998. |
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Páginas: |
32 p. |
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Descrição Física: |
il. |
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Série: |
(EMBRAPA-CPATU. Documentos, 129). |
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Idioma: |
Português |
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Conteúdo: |
Sistema de manejo; aptidao agricola das terras - grupos, subgrupos e classes; Condicoes agricolas das terras; deficiencia de fertilidade; deficiencia de agua; excesso de agua ou deficiencia de oxigenio; susceptibilidade a erosao; impedimentos a mecanizacao; viabilidade de melhoramento das condicoes agricolas das terras; melhoramento quanto a deficiencia da agua (sem irrigacao); melhoramento quanto ao excesso de agua; melhoramento quanto a susceptibilidade aerosao; melhoramento quanto ao impedimento a mecanizacao; descricao das classes de aptidao; area e porcentagem das unidades de aptidao agricola. |
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Palavras-Chave: |
Amapá; Brasil; Reconhecimento do solo - Brasil - Amapa. |
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Thesagro: |
Aptidão Agrícola; Cerrado; Manejo do Solo; Melhoramento do Solo; Reconhecimento do Solo; Solo; Uso da Terra. |
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Thesaurus Nal: |
Amazonia; Brazil; land suitability; land use; savannas; soil; soil management; soil surveys. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/57677/1/CPATU-Doc129.pdf
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Marc: |
LEADER 01624nam a2200373 a 4500
001 1376583
005 2016-11-10
008 1998 bl uuuu u0uu1 u #d
100 1 $aOLIVEIRA JUNIOR, R. C. de
245 $aAptidão agrícola das terras do Campo Experimental dos Cerrados da Embrapa Amapá, Estado do Amapá.
260 $aBelém, PA: EMBRAPA-CPATU$c1998
300 $a32 p.$cil.
490 $a(EMBRAPA-CPATU. Documentos, 129).
520 $aSistema de manejo; aptidao agricola das terras - grupos, subgrupos e classes; Condicoes agricolas das terras; deficiencia de fertilidade; deficiencia de agua; excesso de agua ou deficiencia de oxigenio; susceptibilidade a erosao; impedimentos a mecanizacao; viabilidade de melhoramento das condicoes agricolas das terras; melhoramento quanto a deficiencia da agua (sem irrigacao); melhoramento quanto ao excesso de agua; melhoramento quanto a susceptibilidade aerosao; melhoramento quanto ao impedimento a mecanizacao; descricao das classes de aptidao; area e porcentagem das unidades de aptidao agricola.
650 $aAmazonia
650 $aBrazil
650 $aland suitability
650 $aland use
650 $asavannas
650 $asoil
650 $asoil management
650 $asoil surveys
650 $aAptidão Agrícola
650 $aCerrado
650 $aManejo do Solo
650 $aMelhoramento do Solo
650 $aReconhecimento do Solo
650 $aSolo
650 $aUso da Terra
653 $aAmapá
653 $aBrasil
653 $aReconhecimento do solo - Brasil - Amapa
700 1 $aRODRIGUES, T. E.
700 1 $aVALENTE, M. A.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
04/09/2013 |
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Data da última atualização: |
04/09/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
POWELL, T. I.; GALBRAITH, D. R.; CHRISTOFFERSEN, B. O.; HARPER, A.; IMBUZEIRO, H. M. A.; ROWLAND, L.; ALMEIDA, S.; BRANDO, P. M.; COSTA, A. C. L. da; COSTA, M. H.; LEVINE, N. M.; MALHI, Y.; SALESKA, S. R.; SOTTA, E.; WILLIAMS, M.; MEIR, P.; MOORCROFT, P. R. |
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Afiliação: |
Thomas L. Powell, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA; David R. Galbraith, School of Geography, University of Leeds, Leeds, LS2 9JT, UK; Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK; Bradley O. Christoffersen, Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA; Anna Harper, College of Engineering, Mathematics, and Physical Science, University of Exeter, Exeter, EX4 4QF, UK; Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, USA; Hewlley M. A. Imbuzeiro, Grupo de Pesquisas em Interação Atmosfera-Biosfera, Universidade Federal de Vicosa, Vicosa, CEP 36570-000, Minas Gerias, Brazil; Lucy Rowland, School of GeoSciences, University of Edinburgh, Edinburgh, EH8 9XP, UK; Samuel Almeida, Museu Paraense Emilio Goeldi, Belem, CEP 66077-530, Para, Brazil; Paulo M. Brando, Instituto de Pesquisa Ambiental da Amazônia, CEP 71503-505, Brasilia, Distrito Federal, Brazil; Antonio Carlos Lola da Costa, Centro de Geociências, Universidade Federal do Para, Belem, CEP 66017-970, Para, Brazil; Marcos Heil Costa, Grupo de Pesquisas em Interac~ao Atmosfera-Biosfera, Universidade Federal de Vicosa, Vicosa, CEP 36570-000, Minas Gerias, Brazil; Naomi M. Levine, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA; Yadvinder Malhi, Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK; Scott R. Saleska, Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA; ELENEIDE DOFF SOTTA, CPAF-AP; Mathew Williams, School of GeoSciences, University of Edinburgh, Edinburgh, EH8 9XP, UK; Patrick Meir, School of GeoSciences, University of Edinburgh, Edinburgh, EH8 9XP, UK; Paul R. Moorcroft, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA. |
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Título: |
Confronting model predictions of carbon fluxes with measurements of Amazon forests subjected to experimental drought. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
New Phytologist, Cambridge, Jul. 2013. |
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Idioma: |
Inglês |
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Conteúdo: |
Considerable uncertainty surrounds the fate of Amazon rainforests in response to climate change. Here, carbon (C) flux predictions of five terrestrial biosphere models (Community Land Model version 3.5 (CLM3.5), Ecosystem Demography model version 2.1 (ED2), Integrated BIosphere Simulator version 2.6.4 (IBIS), Joint UK Land Environment Simulator version 2.1 (JULES) and Simple Biosphere model version 3 (SiB3)) and a hydrodynamic terrestrial ecosystem model (the Soil?Plant?Atmosphere (SPA) model) were evaluated against measurements from two large-scale Amazon drought experiments. Model predictions agreed with the observed C fluxes in the control plots of both experiments, but poorly replicated the responses to the drought treatments. Most notably, with the exception of ED2, the models predicted negligible reductions in aboveground biomass in response to the drought treatments, which was in contrast to an observed c. 20% reduction at both sites. For ED2, the timing of the decline in aboveground biomass was accurate, but the magnitude was too high for one site and too low for the other. Three key findings indicate critical areas for future research and model development. First, the models predicted declines in autotrophic respiration under prolonged drought in contrast to measured increases at one of the sites. Secondly, models lacking a phenological response to drought introduced bias in the sensitivity of canopy productivity and respiration to drought. Thirdly, the phenomenological water-stress functions used by the terrestrial biosphere models to represent the effects of soil moisture on stomatal conductance yielded unrealistic diurnal and seasonal responses to drought. MenosConsiderable uncertainty surrounds the fate of Amazon rainforests in response to climate change. Here, carbon (C) flux predictions of five terrestrial biosphere models (Community Land Model version 3.5 (CLM3.5), Ecosystem Demography model version 2.1 (ED2), Integrated BIosphere Simulator version 2.6.4 (IBIS), Joint UK Land Environment Simulator version 2.1 (JULES) and Simple Biosphere model version 3 (SiB3)) and a hydrodynamic terrestrial ecosystem model (the Soil?Plant?Atmosphere (SPA) model) were evaluated against measurements from two large-scale Amazon drought experiments. Model predictions agreed with the observed C fluxes in the control plots of both experiments, but poorly replicated the responses to the drought treatments. Most notably, with the exception of ED2, the models predicted negligible reductions in aboveground biomass in response to the drought treatments, which was in contrast to an observed c. 20% reduction at both sites. For ED2, the timing of the decline in aboveground biomass was accurate, but the magnitude was too high for one site and too low for the other. Three key findings indicate critical areas for future research and model development. First, the models predicted declines in autotrophic respiration under prolonged drought in contrast to measured increases at one of the sites. Secondly, models lacking a phenological response to drought introduced bias in the sensitivity of canopy productivity and respiration to drought. Thirdly, the phenomenolog... Mostrar Tudo |
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Palavras-Chave: |
Ciclo do cabono; Modelo de biosfera terrestre; Terrestrial biosphere model; Tropical rainforest. |
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Thesagro: |
Floresta tropical. |
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Thesaurus NAL: |
carbon cycle. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/89031/1/CPAFAP-2013-Confronting-model-predictions-of-carbon.pdf
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Marc: |
LEADER 02802naa a2200385 a 4500
001 1965567
005 2013-09-04
008 2013 bl uuuu u00u1 u #d
100 1 $aPOWELL, T. I.
245 $aConfronting model predictions of carbon fluxes with measurements of Amazon forests subjected to experimental drought.$h[electronic resource]
260 $c2013
520 $aConsiderable uncertainty surrounds the fate of Amazon rainforests in response to climate change. Here, carbon (C) flux predictions of five terrestrial biosphere models (Community Land Model version 3.5 (CLM3.5), Ecosystem Demography model version 2.1 (ED2), Integrated BIosphere Simulator version 2.6.4 (IBIS), Joint UK Land Environment Simulator version 2.1 (JULES) and Simple Biosphere model version 3 (SiB3)) and a hydrodynamic terrestrial ecosystem model (the Soil?Plant?Atmosphere (SPA) model) were evaluated against measurements from two large-scale Amazon drought experiments. Model predictions agreed with the observed C fluxes in the control plots of both experiments, but poorly replicated the responses to the drought treatments. Most notably, with the exception of ED2, the models predicted negligible reductions in aboveground biomass in response to the drought treatments, which was in contrast to an observed c. 20% reduction at both sites. For ED2, the timing of the decline in aboveground biomass was accurate, but the magnitude was too high for one site and too low for the other. Three key findings indicate critical areas for future research and model development. First, the models predicted declines in autotrophic respiration under prolonged drought in contrast to measured increases at one of the sites. Secondly, models lacking a phenological response to drought introduced bias in the sensitivity of canopy productivity and respiration to drought. Thirdly, the phenomenological water-stress functions used by the terrestrial biosphere models to represent the effects of soil moisture on stomatal conductance yielded unrealistic diurnal and seasonal responses to drought.
650 $acarbon cycle
650 $aFloresta tropical
653 $aCiclo do cabono
653 $aModelo de biosfera terrestre
653 $aTerrestrial biosphere model
653 $aTropical rainforest
700 1 $aGALBRAITH, D. R.
700 1 $aCHRISTOFFERSEN, B. O.
700 1 $aHARPER, A.
700 1 $aIMBUZEIRO, H. M. A.
700 1 $aROWLAND, L.
700 1 $aALMEIDA, S.
700 1 $aBRANDO, P. M.
700 1 $aCOSTA, A. C. L. da
700 1 $aCOSTA, M. H.
700 1 $aLEVINE, N. M.
700 1 $aMALHI, Y.
700 1 $aSALESKA, S. R.
700 1 $aSOTTA, E.
700 1 $aWILLIAMS, M.
700 1 $aMEIR, P.
700 1 $aMOORCROFT, P. R.
773 $tNew Phytologist, Cambridge, Jul. 2013.
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Registro original: |
Embrapa Amapá (CPAF-AP) |
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