Determinação indireta do estoque de biomassa e carbono em povoamentos de acácia-negra (&lt;i&gt;Acacia mearnsii&lt;/i&gt; de Wild.).

Schneider, Paulo Renato; Finger, César Augusto Guimarães; Sobrinho, Valni Giacomelli

doi:10.5902/198050981876

Cited by 17 publications

(15 citation statements)

References 9 publications

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“…Furthermore, Drumond et al (2007) and Silva and Sampaio (2008) observed the same pattern for woody caatinga species. Barrichello et al (2005) and Schneider et al (2005) reported the same pattern for acácia-negra in southern Brazil.…”

Section: Biomass Partitionsupporting

confidence: 50%

ALLOMETRIC MODELS FOR ESTIMATING ABOVEGROUND BIOMASS AND BIOMASS ALLOCATION OF CAPIXINGUI TREES (Croton floribundus Spreng.) IN AN AGRISILVICULTURAL SYSTEM

et al. 2016

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-The objective of this study was to select allometric models to estimate total and pooled aboveground biomass of 4.5-year-old capixingui trees established in an agrisilvicultural system. Aboveground biomass distribution of capixingui was also evaluated. Single-(diameter at breast height [DBH] or crown diameter or stem diameter as the independent variable) and double-entry (DBH or crown diameter or stem diameter and total height as independent variables) models were studied. The estimated total biomass was 17.3 t.ha-1, corresponding to 86.6 kg per tree. All models showed a good fit to the data (R 2 ad > 0.85) for bole, branches, and total biomass. DBH-based models presented the best residual distribution. Model lnW = b0 + b1*lnDBH can be recommended for aboveground biomass estimation. Lower coefficients were obtained for leaves (R 2 ad > 82%). Biomass distribution followed the order: bole>branches>leaves. Bole biomass percentage decreased with increasing DBH of the trees, whereas branch biomass increased.Keywords: Agroforestry systems; Integrated production systems; Modeling.MODELOS ALOMÉTRICOS PARA ESTIMAÇÃO DE BIOMASSA AÉREA E ALOCAÇÃO DE BIOMASSA DE CAPIXINGUI (Croton floribundus Spreng.) EM UM SISTEMA SILVIAGRÍCOLA RESUMO -O objetivo deste estudo foi selecionar equações alométricas para predição da biomassa aérea total e nos compartimentos aéreos de capixingui com 4,5 anos estabelecidas em um sistema silviagrícola. Foram tomadas medidas dendrométricas e utilizou-se o método destrutivo para a estimação da biomassa, com a separação dos componentes em tronco, galhos e folhas. Foram ajustados e comparados quatro modelos alométricos, sendo dois de simples entrada e dois de dupla entrada. Como variáveis preditoras foram considerados o diâmetro à altura do peito (DAP), diâmetro de colo (D colo), diâmetro de copa (Dc) e altura total (H). A biomassa total estimada foi de 17,3 t.ha-1, equivalente a 86,6 kg por árvore. Todos os modelos apresentaram ajustes satisfatórios (R 2 aj >0,85) para tronco, galhos e biomassa total. As equações para biomassa total que tiveram como variável preditora o DAP apresentaram as melhores distribuições de resíduos. O modelo lnW=b0+b1*lnDAP pode ser recomendado para estimativa de biomassa aérea. Para folhas, os coeficientes foram menores (R 2 aj >82%). A distribuição da biomassa nos componentes seguiu a ordem: tronco>galhos>folhas. A percentagem de biomassa no tronco decresceu com o aumento do DAP das árvores enquanto que a biomassa nos galhos aumentou.Palavras-chave: Modelagem; Sistemas agroflorestais; Sistemas de integração da produção.

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Section: Biomass Partitionsupporting

confidence: 50%

ALLOMETRIC MODELS FOR ESTIMATING ABOVEGROUND BIOMASS AND BIOMASS ALLOCATION OF CAPIXINGUI TREES (Croton floribundus Spreng.) IN AN AGRISILVICULTURAL SYSTEM

et al. 2016

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“…These values are similar to the ones cited by Tomé (2007), who obtained an average BEF of 1.44 for resinous species in Portugal. Schneider et al (2005) adopted in their work the approach of volume derivation in biomass and carbon for the species Acacia mearnsii De Wild and came to the conclusion that the estimates were efficient providing low relative error, indicating to be an adequate option for low cost biomass and carbon estimates. Table 4 presents the comparison of the 4 methodological focuses adopted in this study.…”

Section: Methods Of the Biomass' Estimatementioning

confidence: 99%

Methodological alternatives in the estimate of biomass for young individuals of bambusa genus

et al. 2015

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ABSTRACT:The objective of this work was to evaluate the distribution of biomass in compartments, as well as to test and select methods to estimate total biomass for species of Bambusa. For the test of the methods were evaluated: method of estimation from allometric models (total and by compartments), application of allometric equation from literature and method that uses the volume, the density and biomass expansion factor (BEF). Were evaluated using the destructive method, 24 bamboos of the species Bambusa oldhamii Munro and Bambusa vulgaris Schrad. ex J. C. Wendl. For the estimation of biomass, were adjusted 5 models for the selection of the best one and the BEF calculated through the values of volume and density. These methodologies were compared among themselves and with the real biomass. The relationship of increased strength of independent variables with dried biomass measured was with dbh. In the adjustment of mathematical models, the best model was the 5 for the total biomass, model 1 for leaf and culm, and the model 3 for the limb. Of the three methodologies for estimating total biomass, the method of Biomass Expansion Factor demonstrated greater accuracy in estimates, being indicated, therefore, the potential use of this methodology.

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“…Neste cenário de globalização, questões ambientais têm assumido cada vez mais importância social e econômica, e as empresas públicas ou privadas devem estar comprometidas com o desenvolvimento ecologicamente sustentado, buscando maior desempenho por adotarem modelos adequados de gestão ambiental, maior lucro e melhor imagem institucional (Schneider, 2005). ARAÚJO, R.P.…”

Section: Sistema Silvipastorilunclassified

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Determinação indireta do estoque de biomassa e carbono em povoamentos de acácia-negra (<i>Acacia mearnsii</i> de Wild.).

Cited by 17 publications

References 9 publications

ALLOMETRIC MODELS FOR ESTIMATING ABOVEGROUND BIOMASS AND BIOMASS ALLOCATION OF CAPIXINGUI TREES (Croton floribundus Spreng.) IN AN AGRISILVICULTURAL SYSTEM

ALLOMETRIC MODELS FOR ESTIMATING ABOVEGROUND BIOMASS AND BIOMASS ALLOCATION OF CAPIXINGUI TREES (Croton floribundus Spreng.) IN AN AGRISILVICULTURAL SYSTEM

Methodological alternatives in the estimate of biomass for young individuals of bambusa genus

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