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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
03/06/1996 |
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Data da última atualização: |
03/06/1996 |
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Autoria: |
UHL, C.; JORDAN, C.; CLARK, K.; CLARK, H.; HERRERA, R. |
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Título: |
Ecosystem recovery in Amazon caatinga forest after cutting, cutting and burning and bulldozer clearing treatments. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Oikos, v.38, n.3, p.313-320, 1982. |
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Idioma: |
Inglês |
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Conteúdo: |
A study of ecosystem recovery following forest cutting, forest cutting and burning, and forest clearing by bulldozing was conducted in Amazon caatinga forest in the upper Rio Negro Region of southern Venezuela. Ecosystem recovery was evaluated by measuring vegetation composition, biomass, nutrient accumulation, soil characteristics, and nutrient leaching. As disturbance increased in intensity, the early successional vegetation changed from primary forest trees (cut treatment) to successional woody species (cut and burned treatment) to forbs and grasses (bulldozed treatment). Soil nutrient levels were greater in both the cut and the cut and burned treatment plots than in the control forest three years after the disturbances presumably because of steady transfers of nutrients from the forest slash to the soil. Soil nutrient levels in the bulldozed plot were much lower than the control forest because of top soil removal. Aboveground biomass at three years was 1291 g m-2 in the cut site, 870 g m-2 in the cut and burned site, and 77 g m-2 in the bulldozed site. Given these rates of biomass accumulation, approximately 100 yr will be required for both the cut and the cut and burned sites to reach biomass levels characteristics of mature caatinga forest, while more than 1000 yr will be necessary in the case of the bulldozed site. |
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Palavras-Chave: |
Amazon; Ecosystem recovery; Plant; Queima; Recuperacao de ecossistema; Rio Negro region; Treatment. |
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Thesagro: |
Caatinga; Corte; Planta; Tratamento. |
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Thesaurus Nal: |
Amazonia; burning; cutting. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02191naa a2200337 a 4500
001 1789049
005 1996-06-03
008 1982 bl --- 0-- u #d
100 1 $aUHL, C.
245 $aEcosystem recovery in Amazon caatinga forest after cutting, cutting and burning and bulldozer clearing treatments.
260 $c1982
520 $aA study of ecosystem recovery following forest cutting, forest cutting and burning, and forest clearing by bulldozing was conducted in Amazon caatinga forest in the upper Rio Negro Region of southern Venezuela. Ecosystem recovery was evaluated by measuring vegetation composition, biomass, nutrient accumulation, soil characteristics, and nutrient leaching. As disturbance increased in intensity, the early successional vegetation changed from primary forest trees (cut treatment) to successional woody species (cut and burned treatment) to forbs and grasses (bulldozed treatment). Soil nutrient levels were greater in both the cut and the cut and burned treatment plots than in the control forest three years after the disturbances presumably because of steady transfers of nutrients from the forest slash to the soil. Soil nutrient levels in the bulldozed plot were much lower than the control forest because of top soil removal. Aboveground biomass at three years was 1291 g m-2 in the cut site, 870 g m-2 in the cut and burned site, and 77 g m-2 in the bulldozed site. Given these rates of biomass accumulation, approximately 100 yr will be required for both the cut and the cut and burned sites to reach biomass levels characteristics of mature caatinga forest, while more than 1000 yr will be necessary in the case of the bulldozed site.
650 $aAmazonia
650 $aburning
650 $acutting
650 $aCaatinga
650 $aCorte
650 $aPlanta
650 $aTratamento
653 $aAmazon
653 $aEcosystem recovery
653 $aPlant
653 $aQueima
653 $aRecuperacao de ecossistema
653 $aRio Negro region
653 $aTreatment
700 1 $aJORDAN, C.
700 1 $aCLARK, K.
700 1 $aCLARK, H.
700 1 $aHERRERA, R.
773 $tOikos$gv.38, n.3, p.313-320, 1982.
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Registro original: |
Embrapa Pantanal (CPAP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Algodão. Para informações adicionais entre em contato com cnpa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
08/02/2008 |
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Data da última atualização: |
30/03/2009 |
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Autoria: |
QUEIROZ, U. C. de; QUEIROZ, W. N. de; BELTRÃO, N. E. de M.; PÊ, P. R.; SILVA, D. R. S. |
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Afiliação: |
Uilma Cardoso de Queiroz, UFCG; Wilton Nunes de Queiroz, UFCG; Napoleão Esberard de Macêdo Beltrão, Embrapa Algodão; Patrícia Rodrigues Pê, UFCG; Denise Rafaelly Soares, UFCG. |
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Título: |
Seletividade do herbicida Trifloxysulfuron sodium na mamoneira (Ricinus communis L.) cultivar BRS Nordestina. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: CONGRESSO DA REDE BRASILEIRA DE TECNOLOGIA DE BIODIESEL, 2., 2007, Brasília, DF. Resumos...Brasília, DF: MCT/ABIPTI, 2007. |
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Idioma: |
Português |
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Notas: |
Disponível também em CD. |
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Palavras-Chave: |
Redução de crescimento. |
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Thesagro: |
Mamona; Matéria Seca. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00716naa a2200205 a 4500
001 1276681
005 2009-03-30
008 2007 bl uuuu u00u1 u #d
100 1 $aQUEIROZ, U. C. de
245 $aSeletividade do herbicida Trifloxysulfuron sodium na mamoneira (Ricinus communis L.) cultivar BRS Nordestina.
260 $c2007
500 $aDisponível também em CD.
650 $aMamona
650 $aMatéria Seca
653 $aRedução de crescimento
700 1 $aQUEIROZ, W. N. de
700 1 $aBELTRÃO, N. E. de M.
700 1 $aPÊ, P. R.
700 1 $aSILVA, D. R. S.
773 $tIn: CONGRESSO DA REDE BRASILEIRA DE TECNOLOGIA DE BIODIESEL, 2., 2007, Brasília, DF. Resumos...Brasília, DF: MCT/ABIPTI, 2007.
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