Aboveground stock of biomass and organic carbon in stands of Pinus taeda L.

Abstract

This study aimed to estimate biomass and organic carbon in stands of Pinus taeda L. at different ages (14, 16, 19, 21, 22, 23 and 32 years) and located in the municipality of General Carneiro (PR). In order to estimate biomass and organic carbon in different tree components (needles, live branches, dead branches, bark and stem wood), the destructive quantification method was used in which seven trees from each age category were randomly sampled across the stand. Stocks of biomass and organic carbon were found to vary between the different age categories, mainly as a result of existing dissimilarities between ages in association with forest management practices such as thinning, pruning and tree density per hectare.Key words: Nonnative forests, sustainability, forest stand. (14, 16, 19, 21, 22, 23 BIOMASSA E CARBONO ORGÂNICO ACIMA DO SOLO EM PLANTIOS DE Pinus taeda L. RESUMO: Objetivou-se estimar a biomassa e carbono orgânico em plantios de Pinus taeda L. com diferentes idades

Biomass and carbon stock from Pinus caribaea var. hondurensis under homogenous stands in southwest Bahia, Brazil

“…Higher values of carbon fixed in aerial part of the total biomass were reported in the State of Paraná (Brazil) by WATZLAWICK et al (2013) in Pinus taeda stands aged 14 (61.9Mg ha -1 ) and 19 years (38.0Mg ha -1 ), and BALBINOT et al (2008), in Pinus spp. plantations aged 5-15 years (59.5Mg ha -1 ).…”

“…Various biomass and carbon assessment studies were performed in species of the genus Pinus, and above-ground tree biomass (57-299Mg ha -1 ) and carbon stock (26-136Mg ha -1 ) estimates were shown in different regions of Brazil (WATZLAWICK et al, 2005;BALBINOT et al, 2008;CORRÊA & BELLOTE, 2011;GIONGO et al, 2011;WATZLAWICK et al, 2013). Although there is a growing expansion in the areas planted with this genus, information about its production potential is still incipient, and no study related to the subject was reported until now in the Northeast region of Brazil, especially in the State of Bahia.…”

Conteúdo de carbono e nitrogênio na biomassa de regeneração natural de Pinus taeda L.

“…Nota-se, que os galhos apresentaram os maiores teores de carbono (48,3%), e diferiu significativamente pelo teste de Tukey em comparação aos demais compartimentos. A alocação de carbono nos compartimentos decresceu a partir dos compartimentos galhos (48,3 %); acículas (46,90%), raízes (46,48%) e fustes (45,1%), em conformidade com o estudo conduzido por Watzlawick et al (2013) em povoamento de Pinus taeda. Barichello, Schumacher e Caldeira (2005), no ciclo de carbono, o dióxido de carbono (CO2) fixado na biomassa é liberado para a atmosfera pelo processo de decomposição, sendo que a velocidade de liberação depende de fatores externos (temperatura e umidade) e da relação C/N.…”

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

“…Of note, forest biomass production is affected by multiple factors, such as the site quality, genetic ability of the species, and age and density of the plantation. In this context, numerous studies have evaluated biomass production of forests with diverse species and at different sites (Watzlawick et al 2013;Lisboa et al 2015;Lima et al 2016;Silva et al 2017;Sanquetta et al 2019;Péllico Netto and Behling 2019) to gather data on forest plantations. Upon the identification of such factors, biomass production of plantations can be improved.…”