Carbon Content in Shrub-tree Species of the Caatinga

Lana, Mayara Dalla; Ferreira, Rinaldo Luíz Caraciolo; Silva, José Antônio Aleixo da; Duda, Gustavo Pereira; Céspedes, G. H. G.

doi:10.1590/2179-8087.061717

Cited by 3 publications

(1 citation statement)

References 22 publications

(42 reference statements)

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“…It is worth mentioning that the expected variation in carbon content is between 45-50% (Woodenergy.ie, 2022), similar to the results found in the present work. In the area of the present study, Dalla Lana et al (2019) observed similar carbon contents for the studied species, ranging from 44.8% for C. bracteosum to 47.5% for M. ophthalmocentra.…”

Section: Elemental Chemical Analysissupporting

confidence: 75%

Chemical composition and energy potential of woody species in dry forest: subsidies for sustainable forest management

Montoya

Silva²,

Braz³

et al. 2023

Agraria

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Energy demand, especially in developing countries, is partly supplied by firewood and charcoal from natural forests. However, there are not always previous studies of energy quality, with implications for forest management. This study aimed to characterize the energy potential of the wood of six shrub-tree species from the Caatinga and the influence of the circumference class on their chemical properties and energy potential to subsidize forest management. Thus, Anadenanthera colubrina var. cebil (Angico), Cenostigma bracteosum (Catingueira), Cnidoscolus quercifolius (Faveleira), Mimosa ophthalmocentra (Jurema branca), Mimosa tenuiflora (Jurema preta) and Aspidosperma pyrifolium (Pereiro) from an area of Dry Forest (Caatinga) in Floresta, Pernambuco state, Brazil, were analyzed. Each species had three individuals sampled in five circumference classes (I a V) at 1.30 m from the ground. Carbon, hydrogen, nitrogen, insoluble lignin, and ash contents, as well as higher and lower calorific values, apparent and energetic densities and energy production were evaluated. Then, a completely randomized design in a factorial arrangement (species x circumference classes) with three replications, and comparison of means (Tukey's test, p < 0.05) were considered in the statistical analysis. A Cluster analysis was also performed aiming at joint analysis of variables. The results showed that the biomass of M. ophthalmocentra and M. tenuiflora have the highest energy density and amount of energy per unit of mass. C. quercifolius and A. pyrifolium were lower when compared to the other species. In addition, M. ophthalmocentra, M. tenuiflora, A. colubrina and C. bracteosum stood out for energy generation. Classes IV and V can be indicated as biomass for combustion, while class I has disadvantages due to higher nitrogen content and lower upper and lower calorific values.

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Section: Elemental Chemical Analysissupporting

confidence: 75%

Chemical composition and energy potential of woody species in dry forest: subsidies for sustainable forest management

Montoya

Silva²,

Braz³

et al. 2023

Agraria

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Land‐use change alters the stocks of carbon, nitrogen, and phosphorus in a Haplic Cambisol in the Brazilian semi‐arid region

Gava

Giongo

Signor

et al. 2021

Soil Use and Management

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Land-use change (LUC) can impact soil quality. In semi-arid areas of Brazil, impacts of LUC need to be understood for better soil management. This study evaluated the impact of LUC on soil organic carbon (SOC), nitrogen (N), and phosphorus (P) distributions through the soil profile and stocks of a Haplic-Cambisol in the Brazilian Semi-arid region. Three land-use systems (LUS) were investigated: agricultural management (30 years), regeneration under controlled grazing (25 years) after 5 years arable management, and native dry forest. Soil contents of P, total C, total N, and N fractions were used to calculate stocks and their stoichiometric ratios for layers 0-5, 5-10, 10-20, and 20-40 cm. Data from these LUS were compared using Kruskal-Wallis non-parametric tests. Changes to soil microbial biomass reflected the substantially reduced SOC concentration and stock in managed soils compared with that of the natural dry forest area. Total N stock was not affected by LUC, although increases in nitrate and ammonium offset a significantly reduced organic N fraction in the agricultural area. The largest P stock was found in agricultural land, followed by the grazed fallow regeneration site. LUC significantly influenced the stoichiometric ratio of C, N, and P, with the change from Caatinga to agriculture affecting the equilibrium between organic residues' input and mineralization. LUC resulted in significant changes to C, N, and P stocks, which did not recover to the original values, even after 25 years of regeneration under controlled grazing.

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Modeling and Spatialization of Biomass and Carbon Stock Using LiDAR Metrics in Tropical Dry Forest, Brazil

Oliveira

Ferreira

Silva

et al. 2021

Forests

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In recent years, with the growing environmental concern regarding climate change, there has been a search for efficient alternatives in indirect methods for the quantification of biomass and forest carbon stock. In this article, we seek to obtain pioneering results of biomass and carbon estimates from forest inventory data and LiDAR technology in a dry tropical forest in Brazil. We use forest inventory data in two areas together with data from the LiDAR flyby, generating estimates of local biomass and carbon levels obtained from local species. We approach three types of models for data analysis: Multiple linear regression with principal components (PCA), conventional multiple linear regression and stepwise multiple linear regression. The best fit total above ground biomass (TAGB) and total above ground carbon (TAGC) model was the stepwise multiple linear regression, concluding, then, that LiDAR data can be used to estimate biomass and total carbon in dry tropical forest, proven by an adjustment considered in the models employed, with a significant correlation between the LiDAR metrics. Our finding provides important information about the spatial distribution of TAGB and TAGC in the study area, which can be used to manage the reserve for optimal carbon sequestration.

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Carbon Content in Shrub-tree Species of the Caatinga

Cited by 3 publications

References 22 publications

Chemical composition and energy potential of woody species in dry forest: subsidies for sustainable forest management

Chemical composition and energy potential of woody species in dry forest: subsidies for sustainable forest management

Land‐use change alters the stocks of carbon, nitrogen, and phosphorus in a Haplic Cambisol in the Brazilian semi‐arid region

Modeling and Spatialization of Biomass and Carbon Stock Using LiDAR Metrics in Tropical Dry Forest, Brazil

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