Carbon and nitrogen mineralization in soil of leguminous trees in a degraded pasture in northern Rio de Janeiro, Brazil

Nunes, Danielle Aparecida Duarte; Gama-Rodrigues, Emanuela Forestieri; Barreto, Patrícia Anjos Bittencourt; Gama-Rodrigues, Antônio Carlos; Monroe, Paulo Henrique Marques

doi:10.1007/s11676-015-0164-3

Cited by 12 publications

(5 citation statements)

References 47 publications

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“…These results were similar to Araújo et al (2001), Gonçalves et al (2001) and Barreto et al (2010), who found that the amount of mineralized C was lower during the first incubation days. In the same vegetation cover as in the present study, Nunes et al (2015) showed that the C mineralization curve fit the exponential model, and that there was still C available for mineralization by microorganisms after 20 weeks of incubation. The curves also showed that maceration generally increased the amount of C mineralized in the macroaggregates.…”

Section: -5supporting

confidence: 73%

Carbon Mineralization in Soil Aggregate Classes Under Leguminous Tree Planting in North Fluminense, Brazil

Araújo,

Gama-Rodrigues,

Gama-Rodrigues

et al. 2024

Floresta Ambient.

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The physical protection of soil organic matter through its occlusion in aggregates is a mechanism which reduces their accessibility by microorganisms. When the physically protected carbon (C) becomes accessible to the microbiota, it generates a flow of CO 2 . The objective of this study was to evaluate the C mineralization rate in macro and microaggregates of macerated and non-macerated soils under different leguminous tree, pasture, and secondary forest (capoeira). The CO 2 mineralization curves showed that maceration increased the amount of C mineralized in macroaggregates, mainly in leguminous tree. Maceration provided an increase of approximately 50% and 47% in acacia and ingá, respectively, and 35% in sabiá. Capoeira and pasture did not respond to maceration.

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Section: -5supporting

confidence: 73%

Carbon Mineralization in Soil Aggregate Classes Under Leguminous Tree Planting in North Fluminense, Brazil

Araújo,

Gama-Rodrigues,

Gama-Rodrigues

et al. 2024

Floresta Ambient.

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“…Although the Stanford & Smith model is the most widely used to model organic waste mineralized carbon (MARTINES et al, 2006;NUNES et al, 2016;ANDRADE et al, 2016), Table 3 shows that it was not the most appropriate model in any situation compared with the Cabrera and Juma models, since the AICc value was higher in all cases. Thus, we based the inference for potentially mineralizable carbon (C 0 ) on the Juma model, as its confidence intervals for the C 0 parameter did not overlap for doses 6, 12, 24, and 36 Mg ha −1 (Tables 2, 4, 5, and 6), showing that the higher the applied dose, the greater the amount of potentially mineralizable carbon.…”

Section: According To Table 2 In the Stanfordmentioning

confidence: 99%

Nonlinear modeling of carbon dynamics in soil treated with tannery sludge

Leoncio da Silva,

Silva,

Campos Frühauf

et al. 2023

R. Agrogeoambiental

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In 2020, the Brazilian commercial cattle herd was the largest in the world, representing 14.3% of the worldwide herd, with201.7 million heads. Although this activity yields significant profits, contributing to the economic and social development ofBrazil, it has been the target of concerns, mainly due to the large production of waste/effluents associated to bovine leatherprocessing. In this scenario, mineralization is important because nutrients essential for plant growth are released duringthe process of organic waste decomposition, and the dynamics of carbon release can be described by nonlinear regressionmodels. Thus, this study aimed to model the mineralization of organic carbon in the soil for 6, 12, 24, and 36 megagramsdoses per hectare (Mg ha−1) of tannery sludge using the Stanford & Smith, Cabrera, and Juma nonlinear models. Very clayeysoil samples were used: eutroferric red nitosol (NVef). Mineralized carbon was measured in 21 observations over time untilthe 105th day of incubation. Parameters were estimated using the least squares method. Adjustments were compared usingthe corrected Akaike information criterion (AICc) and the adjusted coefficient of determination (R2aj) as selection criteria. The Cabrera model had the best adjustments for doses 6, 12, and 24 Mg ha−1 and Juma for dose 36 Mg ha−1, based on the selection criteria used. Although the Stanford & Smith model is the most widely used in the literature to model soil carbon dynamics, its use was not the most appropriate for any of the doses evaluated in this study. The higher the dose of tannerysludge, the greater the amount of potentially mineralizable carbon.

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“…Forest sustainability is related to nutrient cycling in order to enhance their return to the trees, with the accumulated litter being an important source of nutrients for the trees in the forest ecosystem, because as the leaves, branches and roots are incorporated into the litter and undergo the decomposition process, they release nutrients to the soil and, consequently, are available to trees (BARRETO et al, 2010;GODINHO et al, 2014). In addition, planting tree species is an alternative for recovering degraded areas (NUNES et al, 2016), however, little is known about natural ecosystems and nutrient cycling in native forests and forest plantations in Brazil (GODINHO et al, 2014;MORAIS et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The nonlinear model most used to describe the dynamics of carbon in the soil is Stanford and Smith (ANDRADE;ANDREAZZA;CAMARGO, 2016;ANDRADE et al, 2015), including litter decomposition data (BARRETO et al, 2010;NUNES et al, 2016). It is a model with two parameters that represent the potentially mineralizable carbon and the mineralization constant.…”

Section: Introductionmentioning

confidence: 99%

Comparison of nonlinear models in the description of carbon mineralization in litter soil

Silva

Frühauf

Jane³

et al. 2021

R. Agrogeoambiental

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Litter is an important source of nutrients for trees and can improve the quality of degraded soils. The objective of this study was to describe the dynamics of carbon mineralization in litter soils using nonlinear models, estimating half-life times. Soil carbon mineralization under three types of forest cover was evaluated: Atlantic forest fragment (capoeira), Acacia auriculiformis trees (acacia), and Mimosa caesalpiniifolia (sabiá) from a reforested area with a history of degradation. Twelve measurements of the mineralized carbon were made up to 222 days after the beginning of the incubation of litter soils. Stanford and Smith, Juma, and Cabrera models were fitted by the least squares method using the Gauss-Newton algorithm in the R software. The Stanford and Smith model was more appropriate in describing all treatments, based on the Akaike Information Criterion, with estimates of half-life for Acácia, Capoeira, and Sabiá soils at 25, 44, and 51 days, respectively. The Stanford and Smith and Juma nonlinear models satisfactorily described the carbon mineralization of soils of all treatments.

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Carbon and nitrogen mineralization in soil of leguminous trees in a degraded pasture in northern Rio de Janeiro, Brazil

Cited by 12 publications

References 47 publications

Carbon Mineralization in Soil Aggregate Classes Under Leguminous Tree Planting in North Fluminense, Brazil

Carbon Mineralization in Soil Aggregate Classes Under Leguminous Tree Planting in North Fluminense, Brazil

Nonlinear modeling of carbon dynamics in soil treated with tannery sludge

Comparison of nonlinear models in the description of carbon mineralization in litter soil

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