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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
18/03/2011 |
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Data da última atualização: |
11/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HOHNWALD, S.; ABREU, E. A. A. de; KRUMMEL, T.; TRAUTWEIN, J.; VEIGA, J. B. da; WOLLNY, C. B. A.; AZEVEDO, C. M. B. C. de; GEROLD, G. |
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Afiliação: |
STEFAN HOHNWALD, UNIVERSITY OF GOTTINGEN; ELIANA M. ACIOLI DE ABREU, UFRA; TIMO KRUMMEL, UNIVERSITY OF GOTTINGEN; JULIA TRATWEIN, UNIVERSITY OF APPLIED SCIENCES BINGEN; JONAS BASTOS DA VEIGA, CPATU; CLEMENS B. A. WOLLNY, UNIVERSITY OF APPLIED SCIENCES BINGEN; CELIA MARIA BRAGA C DE AZEVEDO, CPATU; GERHARD GEROLD, UNIVERSITY OF GOTTINGEN. |
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Título: |
Degraded pasture distribution and woody enrichment strategies for pasture fertility preservation in the bragantina region, north-eastern Amazon. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Erdkunde, v. 64, n. 1, p. 17-31, Jan./Mar. 2010. |
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DOI: |
10.3112/erdkunde.2010.01.02 |
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Idioma: |
Inglês |
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Conteúdo: |
In the densely settled Bragantina region, northern Brazil, smallholder cattle pastures start into compulsory degradation processes indicated, among other factors by the woody encroachment of the resprouting secondary vegetation, nationally called ?capoeira?. By means of Landsat and QuickBird satellite imagery techniques different stages of tree dominated pastures were identified and the distribution of degraded pastures quantified. This was tested in a supervised Landsat classification from 2006 and 2007, taking QuickBird imageries from 2004 and 2005 as additional ground checks. We found that 42% of the rural Bragantinian landscape has already converted into pastures, 28% in advanced stages of above ground pasture degradation. Our reclassification means that the region is still confronted with a serious ecological pasture problem and that conventional land use classifications, climatological models and carbon calculations, based on Landsat imageries only, underestimate pasture distribution and thus lead to inaccurate extrapolations. As the resprouting shrubs of the capoeira are a permanent problem on tropical lowland pastures but, on the other hand, are also the ecological basis of the sustainable slash-and-burn systems of smallholders, we tested some innovative strategies to tolerate various useful woody components of the capoeira on pastures to stabilise them ecologically: first, a buffet trial shows that the ten tested capoeira and some other common domesticated tree species obtain a comparable palatability as well-known woody forage legumes. Thus, Cecropia palmata and Tithonia diversifolia, among others, were as palatable for cattle as the well-known multi-purpose legume Cratylia argentea. As a consequence, these freely accessible tree species should not be slashed but fostered on pastures, like supplementary forage plants. Secondly, it is demonstrated that the multi-purpose forage legumes C. argentea and Flemingia macrophylla perform better under smallholder management than under large scaled farming or even intense management due to the associated prolonged restoration times. In sum, we could demonstrate that woody components (capoeira and/or woody legumes) are more appropriate for the humid tropics than pure grass-monocultures. Based on these experiences, we modified the model of a grass-capoeira-legume pasture, incorporating pastures just as an interim stage of the slash-and-burn system. Forage production could be enhanced in that system by selective slashing of the capoeira (palatable species are tolerated) and by incorporating woody forage legumes. As this biome is known to restore its ecosystem fertility rather in its above-ground biomass than in its poor soils, woody components on pastures are recommended for ecologically sustainable production systems. Furthermore, they might be requisite to mitigate the proclaimed climatic change in the Amazon. MenosIn the densely settled Bragantina region, northern Brazil, smallholder cattle pastures start into compulsory degradation processes indicated, among other factors by the woody encroachment of the resprouting secondary vegetation, nationally called ?capoeira?. By means of Landsat and QuickBird satellite imagery techniques different stages of tree dominated pastures were identified and the distribution of degraded pastures quantified. This was tested in a supervised Landsat classification from 2006 and 2007, taking QuickBird imageries from 2004 and 2005 as additional ground checks. We found that 42% of the rural Bragantinian landscape has already converted into pastures, 28% in advanced stages of above ground pasture degradation. Our reclassification means that the region is still confronted with a serious ecological pasture problem and that conventional land use classifications, climatological models and carbon calculations, based on Landsat imageries only, underestimate pasture distribution and thus lead to inaccurate extrapolations. As the resprouting shrubs of the capoeira are a permanent problem on tropical lowland pastures but, on the other hand, are also the ecological basis of the sustainable slash-and-burn systems of smallholders, we tested some innovative strategies to tolerate various useful woody components of the capoeira on pastures to stabilise them ecologically: first, a buffet trial shows that the ten tested capoeira and some other common domesticated tree spec... Mostrar Tudo |
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Palavras-Chave: |
Degradação de pestagem; Sistema agrosilvopastoral; Tipitamba. |
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Thesagro: |
Capoeira. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 03756naa a2200265 a 4500
001 1881516
005 2022-11-11
008 2010 bl uuuu u00u1 u #d
024 7 $a10.3112/erdkunde.2010.01.02$2DOI
100 1 $aHOHNWALD, S.
245 $aDegraded pasture distribution and woody enrichment strategies for pasture fertility preservation in the bragantina region, north-eastern Amazon.$h[electronic resource]
260 $c2010
520 $aIn the densely settled Bragantina region, northern Brazil, smallholder cattle pastures start into compulsory degradation processes indicated, among other factors by the woody encroachment of the resprouting secondary vegetation, nationally called ?capoeira?. By means of Landsat and QuickBird satellite imagery techniques different stages of tree dominated pastures were identified and the distribution of degraded pastures quantified. This was tested in a supervised Landsat classification from 2006 and 2007, taking QuickBird imageries from 2004 and 2005 as additional ground checks. We found that 42% of the rural Bragantinian landscape has already converted into pastures, 28% in advanced stages of above ground pasture degradation. Our reclassification means that the region is still confronted with a serious ecological pasture problem and that conventional land use classifications, climatological models and carbon calculations, based on Landsat imageries only, underestimate pasture distribution and thus lead to inaccurate extrapolations. As the resprouting shrubs of the capoeira are a permanent problem on tropical lowland pastures but, on the other hand, are also the ecological basis of the sustainable slash-and-burn systems of smallholders, we tested some innovative strategies to tolerate various useful woody components of the capoeira on pastures to stabilise them ecologically: first, a buffet trial shows that the ten tested capoeira and some other common domesticated tree species obtain a comparable palatability as well-known woody forage legumes. Thus, Cecropia palmata and Tithonia diversifolia, among others, were as palatable for cattle as the well-known multi-purpose legume Cratylia argentea. As a consequence, these freely accessible tree species should not be slashed but fostered on pastures, like supplementary forage plants. Secondly, it is demonstrated that the multi-purpose forage legumes C. argentea and Flemingia macrophylla perform better under smallholder management than under large scaled farming or even intense management due to the associated prolonged restoration times. In sum, we could demonstrate that woody components (capoeira and/or woody legumes) are more appropriate for the humid tropics than pure grass-monocultures. Based on these experiences, we modified the model of a grass-capoeira-legume pasture, incorporating pastures just as an interim stage of the slash-and-burn system. Forage production could be enhanced in that system by selective slashing of the capoeira (palatable species are tolerated) and by incorporating woody forage legumes. As this biome is known to restore its ecosystem fertility rather in its above-ground biomass than in its poor soils, woody components on pastures are recommended for ecologically sustainable production systems. Furthermore, they might be requisite to mitigate the proclaimed climatic change in the Amazon.
650 $aCapoeira
653 $aDegradação de pestagem
653 $aSistema agrosilvopastoral
653 $aTipitamba
700 1 $aABREU, E. A. A. de
700 1 $aKRUMMEL, T.
700 1 $aTRAUTWEIN, J.
700 1 $aVEIGA, J. B. da
700 1 $aWOLLNY, C. B. A.
700 1 $aAZEVEDO, C. M. B. C. de
700 1 $aGEROLD, G.
773 $tErdkunde$gv. 64, n. 1, p. 17-31, Jan./Mar. 2010.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
05/11/2001 |
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Data da última atualização: |
04/08/2014 |
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Tipo da produção científica: |
Circular Técnica |
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Autoria: |
GRIGOLETTI JUNIOR, A.; AUER, C. G.; SANTOS, A. F. dos. |
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Afiliação: |
Pesquisadores da Embrapa Florestas. |
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Título: |
Estrategias de manejo de doencas em viveiros florestais. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Colombo: Embrapa Florestas, 2001. |
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Páginas: |
6 p. |
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Série: |
(Embrapa Florestas. Circular técnica, 47). |
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ISSN: |
1517-5278 |
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Idioma: |
Português |
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Conteúdo: |
Este trabalho tem como objetivo discutir e apresentar sugestões nos aspectos relacinados ao manejo de doeças em viveiros florestais; Separação das mudas; Recipientes; Substrato; Irrigação; Seleção de mudas; Estresse; Drenagem; Sombreamento; Transplantio; Densidade de semeadura; Rustificação; Monitoramento. |
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Palavras-Chave: |
Brasil; Colombo; Disease; Diseases; Doencas; Fitopatologia; Forest; Forest murseries; Management; Paraná; Pest insects; Seleção de muda; Selecao de mudas; Viveiros florestais. |
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Thesagro: |
Controle Biológico; Controle Cultural; Doença; Doença de planta; Entomologia; Floresta; Irrigação; Manejo; Praga; Viveiro; Viveiro Florestal. |
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Thesaurus NAL: |
biological control; crop management; forest management; forest nurseries; plant nurseries. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPF-2009-09/15740/1/circ-tec47.pdf
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Marc: |
LEADER 01653nam a2200529 a 4500
001 1289927
005 2014-08-04
008 2001 bl uuuu u0uu1 u #d
022 $a1517-5278
100 1 $aGRIGOLETTI JUNIOR, A.
245 $aEstrategias de manejo de doencas em viveiros florestais.
260 $aColombo: Embrapa Florestas$c2001
300 $a6 p.
490 $a(Embrapa Florestas. Circular técnica, 47).
520 $aEste trabalho tem como objetivo discutir e apresentar sugestões nos aspectos relacinados ao manejo de doeças em viveiros florestais; Separação das mudas; Recipientes; Substrato; Irrigação; Seleção de mudas; Estresse; Drenagem; Sombreamento; Transplantio; Densidade de semeadura; Rustificação; Monitoramento.
650 $abiological control
650 $acrop management
650 $aforest management
650 $aforest nurseries
650 $aplant nurseries
650 $aControle Biológico
650 $aControle Cultural
650 $aDoença
650 $aDoença de planta
650 $aEntomologia
650 $aFloresta
650 $aIrrigação
650 $aManejo
650 $aPraga
650 $aViveiro
650 $aViveiro Florestal
653 $aBrasil
653 $aColombo
653 $aDisease
653 $aDiseases
653 $aDoencas
653 $aFitopatologia
653 $aForest
653 $aForest murseries
653 $aManagement
653 $aParaná
653 $aPest insects
653 $aSeleção de muda
653 $aSelecao de mudas
653 $aViveiros florestais
700 1 $aAUER, C. G.
700 1 $aSANTOS, A. F. dos
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