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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Semiárido. |
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Data corrente: |
20/06/1996 |
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Data da última atualização: |
10/01/2023 |
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Autoria: |
KIRMSE, R. D.; NORTON, B. E. |
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Título: |
Comparison of the reference unit method and dimensional analysis methods for two large shrubby species in the caatinga woodlands. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
Journal of Range Management, Denver, Co, v.38, n.5, p.425-428, 1985. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The reference unit technique was compared with the dimensional analysis approach for estimating large shrub foliage biomass in Northeast Brazil. The techniques were tested on coppicing jurema (Mimosa acutistipula Benth.) and pau branco (Auxemma oncocalyx [Fr. Alem.] Taub.). Both methods provided good estimates of foliage weight. The coefficients of determination for the reference unit approach ranged from .890 to .985. The r2 values obtained in applying the dimensional analysis method were .937 and .948. Improvements in estimates with the reference unit method were obtained when (1) a branch unit of 19% of total plant foliage was used versus a unit of only 7%, (2) the branch unit resembled the appearance of the branching of the plant being estimated, and (3) estimations of 3 judges were averaged. |
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Palavras-Chave: |
Analytical estimating; Auxemma oncocalyx; Dimensional analysis; Jurema; Mimosa acutistipula; Pau Branco; Plants; Recursos naturais. |
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Thesagro: |
Biomassa; Botânica; Caatinga; Estimativa; Método; Vegetação. |
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Thesaurus Nal: |
Biomass; Branches; Brazil; Leaves; Shrubs. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01793naa a2200361 a 4500
001 1126632
005 2023-01-10
008 1985 bl uuuu u00u1 u #d
100 1 $aKIRMSE, R. D.
245 $aComparison of the reference unit method and dimensional analysis methods for two large shrubby species in the caatinga woodlands.
260 $c1985
520 $aAbstract: The reference unit technique was compared with the dimensional analysis approach for estimating large shrub foliage biomass in Northeast Brazil. The techniques were tested on coppicing jurema (Mimosa acutistipula Benth.) and pau branco (Auxemma oncocalyx [Fr. Alem.] Taub.). Both methods provided good estimates of foliage weight. The coefficients of determination for the reference unit approach ranged from .890 to .985. The r2 values obtained in applying the dimensional analysis method were .937 and .948. Improvements in estimates with the reference unit method were obtained when (1) a branch unit of 19% of total plant foliage was used versus a unit of only 7%, (2) the branch unit resembled the appearance of the branching of the plant being estimated, and (3) estimations of 3 judges were averaged.
650 $aBiomass
650 $aBranches
650 $aBrazil
650 $aLeaves
650 $aShrubs
650 $aBiomassa
650 $aBotânica
650 $aCaatinga
650 $aEstimativa
650 $aMétodo
650 $aVegetação
653 $aAnalytical estimating
653 $aAuxemma oncocalyx
653 $aDimensional analysis
653 $aJurema
653 $aMimosa acutistipula
653 $aPau Branco
653 $aPlants
653 $aRecursos naturais
700 1 $aNORTON, B. E.
773 $tJournal of Range Management, Denver, Co$gv.38, n.5, p.425-428, 1985.
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Embrapa Semiárido (CPATSA) |
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