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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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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
19/07/1995 |
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Data da última atualização: |
27/10/2015 |
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Autoria: |
FREIRE, E. C.; ALVES, E. J.; CALDAS, R. C.; ALBUQUERQUE, G. A. T. T. de; ALVES, J. A. P.; COELHO, M. A. |
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Título: |
Competição de cultivares de algodão herbáceo (Gossypium hirsutum var. latifolium) na Bahia: resultados preliminares - 1972/73. |
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Ano de publicação: |
1975 |
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Fonte/Imprenta: |
Salvador: EMBRAPA-Representação no Estado da Bahia, 1975. |
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Páginas: |
20 p. |
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Descrição Física: |
il. |
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Série: |
(EMBRAPA-Representação no Estado da Bahia. Comunicado técnico, 02). |
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Idioma: |
Português |
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Palavras-Chave: |
Algodoeiro; Bahia; Brasil; Competicao; Cultivar; Cultivo; EMBRAPA; Production; Representacao; Variety competition. |
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Thesagro: |
Algodão Herbáceo; Competição de Variedade; Gossypium Herbaceum; Melhoramento; Produção; Produtividade. |
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Thesaurus NAL: |
yields. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/126639/1/Competicao-de-cultivares-de-algodao-herbaceo.pdf
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Marc: |
LEADER 01140nam a2200385 a 4500
001 1901145
005 2015-10-27
008 1975 bl uuuu u0uu1 u #d
100 1 $aFREIRE, E. C.
245 $aCompetição de cultivares de algodão herbáceo (Gossypium hirsutum var. latifolium) na Bahia$bresultados preliminares - 1972/73.
260 $aSalvador: EMBRAPA-Representação no Estado da Bahia$c1975
300 $a20 p.$cil.
490 $a(EMBRAPA-Representação no Estado da Bahia. Comunicado técnico, 02).
650 $ayields
650 $aAlgodão Herbáceo
650 $aCompetição de Variedade
650 $aGossypium Herbaceum
650 $aMelhoramento
650 $aProdução
650 $aProdutividade
653 $aAlgodoeiro
653 $aBahia
653 $aBrasil
653 $aCompeticao
653 $aCultivar
653 $aCultivo
653 $aEMBRAPA
653 $aProduction
653 $aRepresentacao
653 $aVariety competition
700 1 $aALVES, E. J.
700 1 $aCALDAS, R. C.
700 1 $aALBUQUERQUE, G. A. T. T. de
700 1 $aALVES, J. A. P.
700 1 $aCOELHO, M. A.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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