Vertical distribution of aboveground biomass
in a seasonal deciduous forest

Balbinot, Rafaelo; Trautenmüller, Jonathan William; Caron, Bráulio Otomar; Borella, Juliane; Costa, Sebastiano; Breunig, Fábio Marcelo

doi:10.5039/agraria.v12i3a5448

Cited by 8 publications

(6 citation statements)

References 9 publications

(14 reference statements)

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“…In the General Carneiro (ZANETTE et al, 2017), Frederico Westphalen and Iraí sites (BALBINOT et al, 2017) 20, 3 and 4 plots of 144 m² were sampled, respectively. In these plots, all trees with diameter at breast height (dbh) greater than 5 cm were sampled.…”

Section: Methodsmentioning

confidence: 99%

Path Analysis Applied to Evaluation of Biomass Estimates in Subtropical Forests at Brazil

Trautenmüller¹,

Netto²,

Balbinot³

et al. 2019

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________________________________________________________________________________________ ResumoAnálise de trilha aplicada à avaliação de estimativas de biomassa em florestas subtropicais no Brasil. A análise de correlação entre diferentes variáveis nem sempre expressa totalmente o efeito direto real de uma variável sobre outra, especialmente em experimentos florestais. O objetivo do presente estudo foi avaliar as correlações e seus desdobramentos em efeitos diretos e indiretos do diâmetro das árvores, altura e componentes da biomassa na biomassa total acima do solo, utilizando a análise de trilha. Também objetiva definir quais variáveis devem ser incluídas na modelagem de biomassa. Os dados das árvores foram coletados em oito locais localizados no Paraná e no Rio Grande do Sul, onde o diâmetro a 1,30 m acima do solo (dbh); altura total (h); biomassa de fuste, galhos, folhas e biomassa total acima do solo foram medidas. A correlação de Spearman mostrou que dbh (0,93), fuste (0,94) e galhos (0,90) tiveram a maior associação com a biomassa total acima do solo quando os efeitos diretos e indiretos das variáveis foram desdobrados por análise de trilha. Os componentes fuste (0,44) e galhos (0,35) propiciaram maiores efeitos diretos quando comparados com o dbh (0,17). Para o componente fuste, galhos e folhas a biomassa total acima do solo apresentou os maiores efeitos diretos de 0,59, 0,74 e 0,36, respectivamente. Assim, esses resultados indicam a conveniência em se incluir pelo menos um componente de biomassa no modelo de regressão de biomassa, juntamente com dbh e h. Palavras-chave: correlação de Spearman, componente de biomassa, efeitos diretos e indiretos, florestas nativas. AbstractCorrelation analysis among different variables do not always fully express the real direct effect of one variable on another, especially in forest experiments. The objective of the present study was to evaluate the correlations among direct/indirect effects of tree diameter, height, and biomass components on tree total aboveground biomass and consequences when using path analysis. We also aimed to define which of the variables should be included in biomass modeling. The tree data were collected from eight sites located in Paraná and Rio Grande do Sul, where the diameter at 1.30 m aboveground (dbh), total height (h), biomass of stems, branches, leaves and tree total aboveground biomass were measured. Spearman's correlation showed that dbh (0.93), stems (0.94), and branches (0.90) had the highest association with total aboveground biomass when the direct and indirect effects of these variables were deconstructed by path analysis. The stem (0.44) and branch (0.35) components provided greater direct effects when compared with dbh (0.17). For the component stem, branches, and leaves the total aboveground biomass presented the greatest direct effects of 0.59, 0.74, and 0.36, respectively. Thus, these results indicate the convenience of including at least one biomass component in the biomass regression model, along with dbh and height.

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Section: Methodsmentioning

confidence: 99%

Path Analysis Applied to Evaluation of Biomass Estimates in Subtropical Forests at Brazil

Trautenmüller¹,

Netto²,

Balbinot³

et al. 2019

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“…O estoque de carbono presente nesse compartimento foi calculado da mesma forma que o considerado para a biomassa viva acima do solo. A importância de se estimar a biomassa da camada de serapilheira reside no fato de que esse compartimento pode representar até 5% do carbono acima do solo, tanto em florestas tropicais como em subtropicais (BALBINOT et al, 2017).…”

Section: Methodsunclassified

Estoque De Carbono Em Áreas De Restauração Florestal Da Mata Atlântica

Azevedo

Camara

Francelino³

et al. 2018

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ResumoEcossistemas florestais são importantes no processo de estocagem de carbono da atmosfera. Áreas de reflorestamentos podem contribuir de maneira substancial nesse processo e diminuir a pressão extrativista sobre florestas nativas. Este trabalho objetivou avaliar a biomassa acima do solo viva (por meio do método não-destrutivo -equações alométricas) e morta (serapilheira) e o estoque de carbono nesses compartimentos em áreas de reflorestamento com diferentes idades (3, 5 e 7 anos) e em área de Floresta Ombrófila Densa (testemunha), localizadas no município de Cachoeiras de Macacu (RJ). Foram alocadas 30 parcelas (10 x 10 m cada) na área testemunha e 20 parcelas (20 x 30 m cada) nas áreas de reflorestamento. Os indivíduos arbóreos foram identificados, e a altura total, circunferência e diâmetro à altura do peito foram medidos. A serapilheira foi coletada com gabarito quadrado (1 x 1 m) em cinco repetições em cada área. Os valores de biomassa acima do solo e carbono estocado aumentaram à medida que a idade dos plantios de restauração florestal avançou. Os modelos alométricos utilizados foram adequados no estudo. Contudo, é necessário testar a confiabilidade dos dados com a utilização do método destrutivo nas áreas reflorestadas. Palavras-chave: Sequestro de carbono, restauração florestal, biomassa acima do solo, serapilheira. AbstractCarbon stock in forest restoration areas of the Atlantic Forest. Forest ecosystems are important in the process of storing carbon from the atmosphere. Reforestation areas can contribute substantially in this process and reduce the extractive pressure over native forests. This study aimed to assess the aboveground live biomass (by non-destructive method -allometric equations) and dead biomass (litter layer standing stock) and carbon stock in these compartments at areas of reforestation of different ages (3, 5, and 7 years old) and at a Dense Ombrophylous Forest (control) area, located in the municipality of Cachoeiras de Macacu (state of Rio de Janeiro, Brazil). We allocated 30 plots (10 x 10 m each) in the control area and 20 plots (20 x 30 m each) in the reforestation areas. Tree individuals were identified, and total height, circumference, and diameter at breast height were measured. The litter standing stock was collected by square gauge (1 x 1 m) in five replicates at each area. The values of aboveground biomass and stored carbon increased as the age of forest restoration plantings advanced. The allometric models used were adequate in the study. However, it is necessary to test the reliability of the data, using the destructive method in the reforested areas.

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“…Measuring the biomass of all trees in a plantation is impractical given the constraints of time and resources (Watzlawick et al 2013;Trautenmüller et al 2019). In general, forest biomass is evaluated using four techniques, namely the medium tree (Trautenmüller et al 2019), stratified tree (by diameter class), area unit (Balbinot et al 2017;Trautenmüller et al 2019), and regression (Balbinot et al 2019) techniques; these techniques are further divided into direct (destructive) and indirect (non-destructive) methods. For any of the above biomass assessment techniques, a forest inventory must initially be performed.…”

Section: Introductionmentioning

confidence: 99%

“…In the direct method, the selected trees are felled and then biomass is measured. However, despite its accuracy, the direct method is timeconsuming and costly, since forest biomass is determined through quantification and weighing (wet and dry) of different tree components (Qureshi et al 2012;Balbinot et al 2017;Trautenmüller et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Determination of the biomass stock in a mixed plantation of Pinus taeda L. and Pinus elliottii Engelm.

Carvalho¹,

Trautenmüller²,

Carvalho³

et al. 2021

ADV. FOR. SCI.

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Mixed planting when well managed can be more efficient in the production of biomass and in the use of available resources, thus increasing the profits of planting. The objectives of this research were to quantify the biomass of a mixed plantation of Pinus taeda and Pinus elliottii, by the direct method and to verify the allocation of biomass between the components and the production of biomass per unit area of the mixed plantation and of the two species studied. From the forest census carried out in the mixed planting of 43.5 ha, at 16 years of age, the diametric distribution of the population was generated. Based on the diametric classes, 60 trees were randomly sampled by the direct method, 30 trees for each species. Then, the aerial biomass production in the different components of the tree for both species was evaluated and compared. Mixed planting produced 171.5 t ha-1 of biomass; the shaft represented more than 60% of the biomass. The biomass production in Pinus taeda was superior to Pinus elliottii. The biomass of branches, in turn, was significantly different between species. The stratified tree technique revealed that biomass production in the stand was lower than the biomass obtained by the direct method. In this technique, the biomass (t ha-1) was superior to Pinus elliottii, due to the frequency of individuals in the forest census being higher in the central diameter class, and the species having a larger number of individuals in the stand.

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Vertical distribution of aboveground biomass in a seasonal deciduous forest

Cited by 8 publications

References 9 publications

Path Analysis Applied to Evaluation of Biomass Estimates in Subtropical Forests at Brazil

Path Analysis Applied to Evaluation of Biomass Estimates in Subtropical Forests at Brazil

Estoque De Carbono Em Áreas De Restauração Florestal Da Mata Atlântica

Determination of the biomass stock in a mixed plantation of Pinus taeda L. and Pinus elliottii Engelm.

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