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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
15/05/2002 |
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Data da última atualização: |
15/05/2002 |
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Autoria: |
SCHACHT, W. H.; MESQUITA, R. C. M.; MALECHEK, J. C.; KIRMSE, R. D. |
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Título: |
Response of Caatinga Vegetation to Decreasing Levels of Canopy Cover. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 24, n.11, p.14121-1426, nov. 1989 |
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Idioma: |
Português |
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Conteúdo: |
Although clearing of the caatinga forest is conducted primarily to open arcas for crop production and to harvest wood, vegetation manipulation is being promoted as a means of increasing forage availability to livestock. Response of caatinga vegetation to various; levels of canopy cover removal is being studied in two experimerits at the CNPC, Sobral, CE, Brazil. Complete removal of the tree canopy resulted in a six to eightfo"d increase in first year production of herbaceous vegetation. This magnitude of increase was also true for ranopy covers of 20% - 30% and 50% - 60%. Caatinga species coppice readily following cutting and, therefore, canopy cover for the cleared treatment (complete removal) was equal to that of the control (approximately 95 %) by the end of die fourth ycar posttreatment. As a result, herbaceous vegetation and leaf litter yiclds for the two treatments were similar, too. Sabiá (Mimosa caesalpiniaefolia), a tree species which produces palatable browse and valuable wood, responded very favorably to clearing. Not only did many new plants establish, but by the fourth year posttreatment sabiá coppice on the cleared areas produced as much as ten times more foliar biomass than did the intact trees on the control area. The high herbaceous vegetation yields under a thinned canopy and the favorable responses; to cutting of tree species; such as sabiá indicate diat a multiple use approach involving selectively thinned caatinga could be developed whereby production of the naturally renewable wood and forage resources would be optimized. MenosAlthough clearing of the caatinga forest is conducted primarily to open arcas for crop production and to harvest wood, vegetation manipulation is being promoted as a means of increasing forage availability to livestock. Response of caatinga vegetation to various; levels of canopy cover removal is being studied in two experimerits at the CNPC, Sobral, CE, Brazil. Complete removal of the tree canopy resulted in a six to eightfo"d increase in first year production of herbaceous vegetation. This magnitude of increase was also true for ranopy covers of 20% - 30% and 50% - 60%. Caatinga species coppice readily following cutting and, therefore, canopy cover for the cleared treatment (complete removal) was equal to that of the control (approximately 95 %) by the end of die fourth ycar posttreatment. As a result, herbaceous vegetation and leaf litter yiclds for the two treatments were similar, too. Sabiá (Mimosa caesalpiniaefolia), a tree species which produces palatable browse and valuable wood, responded very favorably to clearing. Not only did many new plants establish, but by the fourth year posttreatment sabiá coppice on the cleared areas produced as much as ten times more foliar biomass than did the intact trees on the control area. The high herbaceous vegetation yields under a thinned canopy and the favorable responses; to cutting of tree species; such as sabiá indicate diat a multiple use approach involving selectively thinned caatinga could be developed whereby production of... Mostrar Tudo |
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Palavras-Chave: |
coppice; vegetation manipulation. |
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Thesagro: |
Mimosa Caesalpiniaefolia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02150naa a2200193 a 4500
001 1107226
005 2002-05-15
008 1989 bl uuuu u00u1 u #d
100 1 $aSCHACHT, W. H.
245 $aResponse of Caatinga Vegetation to Decreasing Levels of Canopy Cover.
260 $c1989
520 $aAlthough clearing of the caatinga forest is conducted primarily to open arcas for crop production and to harvest wood, vegetation manipulation is being promoted as a means of increasing forage availability to livestock. Response of caatinga vegetation to various; levels of canopy cover removal is being studied in two experimerits at the CNPC, Sobral, CE, Brazil. Complete removal of the tree canopy resulted in a six to eightfo"d increase in first year production of herbaceous vegetation. This magnitude of increase was also true for ranopy covers of 20% - 30% and 50% - 60%. Caatinga species coppice readily following cutting and, therefore, canopy cover for the cleared treatment (complete removal) was equal to that of the control (approximately 95 %) by the end of die fourth ycar posttreatment. As a result, herbaceous vegetation and leaf litter yiclds for the two treatments were similar, too. Sabiá (Mimosa caesalpiniaefolia), a tree species which produces palatable browse and valuable wood, responded very favorably to clearing. Not only did many new plants establish, but by the fourth year posttreatment sabiá coppice on the cleared areas produced as much as ten times more foliar biomass than did the intact trees on the control area. The high herbaceous vegetation yields under a thinned canopy and the favorable responses; to cutting of tree species; such as sabiá indicate diat a multiple use approach involving selectively thinned caatinga could be developed whereby production of the naturally renewable wood and forage resources would be optimized.
650 $aMimosa Caesalpiniaefolia
653 $acoppice
653 $avegetation manipulation
700 1 $aMESQUITA, R. C. M.
700 1 $aMALECHEK, J. C.
700 1 $aKIRMSE, R. D.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 24, n.11, p.14121-1426, nov. 1989
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
22/10/2014 |
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Data da última atualização: |
22/10/2014 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
WELKE, J. E.; ZANUS, M.; LAZZAROTTO, M.; MAYER, F. M.; ZINI, C. A. |
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Afiliação: |
Juliane Elisa Welke, UFRGS; Mauro Zanus, UFRGS; MARCELO LAZZAROTTO, CNPF; Francieli Martins Mayer, UFRGS; Claudia Alcaraz Zini, UFRGS. |
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Título: |
Avaliação quantitativa dos compostos voláteis de vinhos analisados através da GC×GC. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE CROMATOGRAFIA E TÉCNICAS AFINS, 2014, Campos do Jordão. Livro de resumos. [S.l.]: AB Sciex, 2014. |
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Páginas: |
p. 71. |
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Idioma: |
Português |
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Notas: |
SIMCRO. |
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Palavras-Chave: |
Compostos voláteis. |
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Thesagro: |
Cromatografia Gasosa; Vinho. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/110344/1/2014-MarceloL-SIMCRO-AvaliacaoQuantitativa.pdf
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Marc: |
LEADER 00679nam a2200205 a 4500
001 1997970
005 2014-10-22
008 2014 bl uuuu u00u1 u #d
100 1 $aWELKE, J. E.
245 $aAvaliação quantitativa dos compostos voláteis de vinhos analisados através da GC×GC.$h[electronic resource]
260 $aIn: SIMPÓSIO BRASILEIRO DE CROMATOGRAFIA E TÉCNICAS AFINS, 2014, Campos do Jordão. Livro de resumos. [S.l.]: AB Sciex$c2014
300 $ap. 71.
500 $aSIMCRO.
650 $aCromatografia Gasosa
650 $aVinho
653 $aCompostos voláteis
700 1 $aZANUS, M.
700 1 $aLAZZAROTTO, M.
700 1 $aMAYER, F. M.
700 1 $aZINI, C. A.
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Embrapa Florestas (CNPF) |
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