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Registro Completo |
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Biblioteca(s): |
Embrapa Solos / UEP-Recife. |
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Data corrente: |
18/07/2017 |
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Data da última atualização: |
18/07/2017 |
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Autoria: |
MARIOTI, J.; BERTOL, I.; RAMOS, J. C.; WERNER, R. de S.; PADILHA, J.; BANDEIRA, D. H. |
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Título: |
Erosão hídrica em semeadura direta de milho e soja nas direções da pendente e em contorno ao declive, comparada ao solo sem cultivo e descoberto. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 37, n. 5, p. 1361-1371, set./out. 2013. |
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Idioma: |
Português |
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Notas: |
Título em Inglês: Water erosion from no-tillage corn and soybean sown along and perpendiculary to the contour lines, compared with bare fallow soil. |
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Conteúdo: |
O objetivo deste trabalho consistiu em quantificar as perdas de água e solo por erosão hídrica, em um solo cultivado com soja e milhosob semeadura direta, nas direções da pendente e em contorno ao declive. O experimento foi realizado em um cambissolo húmico alumínico léptico, no período de 2010-2011, sob aplicação de quatro testes de chuva simulada.
The objective of this study was to quantify water and soil losses by rainfall erosion from a soil under no-tillage soybean and mayze, sown along and perpendicularly to the slope contour lines. The experiment was conducted on an Inceptisol, in the 2010/201 growing season, wth application of four simulated rainfall tests. |
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Palavras-Chave: |
Chuva simulada; Perda de água; Perda de solo; Runoff rate; Simulated rainfall; Soil loss; Taxa de enxurrada; Water loss. |
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Thesagro: |
Solo. |
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Thesaurus Nal: |
Soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01750naa a2200313 a 4500
001 2072847
005 2017-07-18
008 2013 bl uuuu u00u1 u #d
100 1 $aMARIOTI, J.
245 $aErosão hídrica em semeadura direta de milho e soja nas direções da pendente e em contorno ao declive, comparada ao solo sem cultivo e descoberto.
260 $c2013
500 $aTítulo em Inglês: Water erosion from no-tillage corn and soybean sown along and perpendiculary to the contour lines, compared with bare fallow soil.
520 $aO objetivo deste trabalho consistiu em quantificar as perdas de água e solo por erosão hídrica, em um solo cultivado com soja e milhosob semeadura direta, nas direções da pendente e em contorno ao declive. O experimento foi realizado em um cambissolo húmico alumínico léptico, no período de 2010-2011, sob aplicação de quatro testes de chuva simulada. The objective of this study was to quantify water and soil losses by rainfall erosion from a soil under no-tillage soybean and mayze, sown along and perpendicularly to the slope contour lines. The experiment was conducted on an Inceptisol, in the 2010/201 growing season, wth application of four simulated rainfall tests.
650 $aSoil
650 $aSolo
653 $aChuva simulada
653 $aPerda de água
653 $aPerda de solo
653 $aRunoff rate
653 $aSimulated rainfall
653 $aSoil loss
653 $aTaxa de enxurrada
653 $aWater loss
700 1 $aBERTOL, I.
700 1 $aRAMOS, J. C.
700 1 $aWERNER, R. de S.
700 1 $aPADILHA, J.
700 1 $aBANDEIRA, D. H.
773 $tRevista Brasileira de Ciência do Solo, Viçosa, MG$gv. 37, n. 5, p. 1361-1371, set./out. 2013.
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Embrapa Solos / UEP-Recife (CNPS-UEPR) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
21/08/2006 |
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Data da última atualização: |
28/04/2022 |
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Autoria: |
PHILLIPS, O. L.; BAKER, T. R.; ARROYO, L.; HIGUCHI, N.; KILLEEN, T. J.; LAURENCE, W. F.; LEWIS, S. L.; LLOYD, J.; MALHI, Y.; MONTEAGUDO, A.; NEILL, D. A.; VARGAS, P. N.; SILVA, J. N. M.; TERBORGH, J.; MARTÍNEZ, R. V.; ALEXIADES, M.; ALMEIDA, S.; BROWN, S.; CHAVES, J.; COMISKEY, J. A.; CZIMCZIK, C. I.; DI FIORE, A.; ERWIN, T.; KUEBLER, C.; LAURANCE, S. G.; NASCIMENTO, H. E. M.; OLIVIER, J.; PALACIOS, W.; PATIÑO, S.; PITMAN, N. C. A.; QUESADA, C. A.; SALDIAS, M.; LEZAMA, A. T.; VINCETI, B. |
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Afiliação: |
JOSÉ NATALINO MACEDO SILVA, CPATU. |
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Título: |
Pattern and process in Amazon tree turnover, 1976-2001. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Philippine Transactions of Royal Society of London. B, v. 359, n. 1443, p. 381-407, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
Previous work has shown that tree turnover, tree biomass and large liana densities have increased in mature tropical forest plots in the late twentieth century. These results point to a concerted shift in forest ecological processes that may already be having significant impacts on terrestrial carbon stocks, fluxes and biodiversity. However, the findings have proved controversial, partly because a rather limited number of permanent plots have been monitored for rather short periods. The aim of this paper is to characterize regional-scale patterns of 'tree turnover' (the rate with which trees die and recruit into a population) by using improved datasets now available for Amazonia that span the past 25 years. Specifically, we assess whether concerted changes in turnover are occurring, and if so whether they are general throughout the Amazon or restricted to one region or environmental zone. In addition, we ask whether they are driven by changes in recruitment, mortality or both. We find that: (i) trees 10 cm or more in diameter recruit and die twice as fast on the richer soils of southern and western Amazonia than on the poorer soils of eastern and central Amazonia; (ii) turnover rates have increased throughout Amazonia over the past two decades; (iii) mortality and recruitment rates have both increased significantly in every region and environmental zone, with the exception of mortality in eastern Amazonia; (iv) recruitment rates have consistently exceeded mortality rates; (v) absolute increases in recruitment and mortality rates are greatest in western Amazonian sites; and (vi) mortality appears to be lagging recruitment at regional scales. These spatial patterns and temporal trends are not caused by obvious artefacts in the data or the analyses. The trends cannot be directly driven by a mortality driver (such as increased drought or fragmentation-related death) because the biomass in these forests has simultaneously increased. Our findings therefore indicate that long-acting and widespread environmental changes are stimulating the growth and productivity of Amazon forests. MenosPrevious work has shown that tree turnover, tree biomass and large liana densities have increased in mature tropical forest plots in the late twentieth century. These results point to a concerted shift in forest ecological processes that may already be having significant impacts on terrestrial carbon stocks, fluxes and biodiversity. However, the findings have proved controversial, partly because a rather limited number of permanent plots have been monitored for rather short periods. The aim of this paper is to characterize regional-scale patterns of 'tree turnover' (the rate with which trees die and recruit into a population) by using improved datasets now available for Amazonia that span the past 25 years. Specifically, we assess whether concerted changes in turnover are occurring, and if so whether they are general throughout the Amazon or restricted to one region or environmental zone. In addition, we ask whether they are driven by changes in recruitment, mortality or both. We find that: (i) trees 10 cm or more in diameter recruit and die twice as fast on the richer soils of southern and western Amazonia than on the poorer soils of eastern and central Amazonia; (ii) turnover rates have increased throughout Amazonia over the past two decades; (iii) mortality and recruitment rates have both increased significantly in every region and environmental zone, with the exception of mortality in eastern Amazonia; (iv) recruitment rates have consistently exceeded mortality rates; (v... Mostrar Tudo |
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Palavras-Chave: |
Brasil. |
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Thesagro: |
Desenvolvimento Florestal; Produção Florestal. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03604naa a2200565 a 4500
001 1408524
005 2022-04-28
008 2004 bl uuuu u00u1 u #d
100 1 $aPHILLIPS, O. L.
245 $aPattern and process in Amazon tree turnover, 1976-2001.$h[electronic resource]
260 $c2004
520 $aPrevious work has shown that tree turnover, tree biomass and large liana densities have increased in mature tropical forest plots in the late twentieth century. These results point to a concerted shift in forest ecological processes that may already be having significant impacts on terrestrial carbon stocks, fluxes and biodiversity. However, the findings have proved controversial, partly because a rather limited number of permanent plots have been monitored for rather short periods. The aim of this paper is to characterize regional-scale patterns of 'tree turnover' (the rate with which trees die and recruit into a population) by using improved datasets now available for Amazonia that span the past 25 years. Specifically, we assess whether concerted changes in turnover are occurring, and if so whether they are general throughout the Amazon or restricted to one region or environmental zone. In addition, we ask whether they are driven by changes in recruitment, mortality or both. We find that: (i) trees 10 cm or more in diameter recruit and die twice as fast on the richer soils of southern and western Amazonia than on the poorer soils of eastern and central Amazonia; (ii) turnover rates have increased throughout Amazonia over the past two decades; (iii) mortality and recruitment rates have both increased significantly in every region and environmental zone, with the exception of mortality in eastern Amazonia; (iv) recruitment rates have consistently exceeded mortality rates; (v) absolute increases in recruitment and mortality rates are greatest in western Amazonian sites; and (vi) mortality appears to be lagging recruitment at regional scales. These spatial patterns and temporal trends are not caused by obvious artefacts in the data or the analyses. The trends cannot be directly driven by a mortality driver (such as increased drought or fragmentation-related death) because the biomass in these forests has simultaneously increased. Our findings therefore indicate that long-acting and widespread environmental changes are stimulating the growth and productivity of Amazon forests.
650 $aAmazonia
650 $aDesenvolvimento Florestal
650 $aProdução Florestal
653 $aBrasil
700 1 $aBAKER, T. R.
700 1 $aARROYO, L.
700 1 $aHIGUCHI, N.
700 1 $aKILLEEN, T. J.
700 1 $aLAURENCE, W. F.
700 1 $aLEWIS, S. L.
700 1 $aLLOYD, J.
700 1 $aMALHI, Y.
700 1 $aMONTEAGUDO, A.
700 1 $aNEILL, D. A.
700 1 $aVARGAS, P. N.
700 1 $aSILVA, J. N. M.
700 1 $aTERBORGH, J.
700 1 $aMARTÍNEZ, R. V.
700 1 $aALEXIADES, M.
700 1 $aALMEIDA, S.
700 1 $aBROWN, S.
700 1 $aCHAVES, J.
700 1 $aCOMISKEY, J. A.
700 1 $aCZIMCZIK, C. I.
700 1 $aDI FIORE, A.
700 1 $aERWIN, T.
700 1 $aKUEBLER, C.
700 1 $aLAURANCE, S. G.
700 1 $aNASCIMENTO, H. E. M.
700 1 $aOLIVIER, J.
700 1 $aPALACIOS, W.
700 1 $aPATIÑO, S.
700 1 $aPITMAN, N. C. A.
700 1 $aQUESADA, C. A.
700 1 $aSALDIAS, M.
700 1 $aLEZAMA, A. T.
700 1 $aVINCETI, B.
773 $tPhilippine Transactions of Royal Society of London. B$gv. 359, n. 1443, p. 381-407, 2004.
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