Estoque de C e Abundância Natural de 13C em Razão da Conversão de Áreas de Floresta e Pastagem em Bioma Mata Atlântica

Dortzbach, Denílson; Pereira, Marcos Gervásio; Blainski, Éverton; Paz‐González, Antonio

doi:10.1590/01000683rbcs20140531

Cited by 20 publications

(32 citation statements)

References 44 publications

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“…Similar results were reported by Schiavo et al (2011) and Dortzbach et al (2015), which verified differences in TOC levels both between treatments and depths, and found the highest levels in native vegetation areas. Higher TOC values in native vegetation areas occur due to the higher amount of vegetal residues on the soil surface, associated with the absence of anthropic action (GAZOLLA et al, 2015).…”

Section: Resultssupporting

confidence: 90%

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Soil organic matter fractions and carbon management index under integrated crop-livestock system

et al. 2020

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The objective of this work was to evaluate the carbon content of the physical, chemical and oxidizable fractions of soil organic matter (SOM) and to calculate the carbon management index (CMI) in an area managed under an integrated crop-livestock system (ICLS) in the western region of Paraná - Brazil. The experiment was carried out at the experimental farm, belonging to the Universidade Estadual do Oeste do Paraná. Seventeen areas, which are managed in different ways, fifteen in ICLS and two areas of controls (Forest and Haymaking), using the design divided with two nested controls, with three replications were evaluated. Deformed and undisturbed soil samples were collected from all the areas to determine the total organic carbon (TOC), carbon stock, the physical, chemical and oxidizable fractions of SOM and the CMI in the layers of 0-0.05, 0.05-0.1 and 0.1-0.2 m. Little significant changes in the fractions were found for the management of the ICLS area in relation to the Forest and the area of Haymaking, although the Forest presented the best values for most of the studied fractions. It is recommended to adopt sustainable practices, such as ICLS, even though the average fractions tend to take time to match reference areas.

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Section: Resultssupporting

confidence: 90%

“…The TOC content tends to decrease in depth, as observed in this work in the native vegetation, the reduction was of 28% between the superficial layer and the deepest. This result is due to the greater contributions of SOM in the superficial layers (BATISTA et al, 2013;DORTZBACH et al, 2015).…”

Section: Resultsmentioning

confidence: 96%

Soil organic matter fractions and carbon management index under integrated crop-livestock system

et al. 2020

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“…It may also be related to the storage capacity of C by pastures, when adopting alternative management systems. These levels may be higher than those found in native forest, according to a study carried out by Dortzbach et al (2015).…”

Section: Resultsmentioning

confidence: 73%

Aggregation, carbon, and total soil nitrogen in crop-livestock-forest integration in the Eastern Amazon

Silva

Veloso

et al. 2018

Rev. bras. eng. agríc. ambient.

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Sustainable agricultural production systems can improve physical attributes of soil as well as increase carbon and nitrogen stocks in soils. The objective of this study was to evaluate changes in the stability of soil aggregates and contents and stocks of carbon and nitrogen after the conversion of native forest to crop-livestock-forest integration systems in the region of Western Pará. Soil samples from five management systems (including a control) were collected at three depths in a randomized block design, with five replications. The stability of the aggregates, soil density, particle density, and total soil porosity, as well as total carbon and nitrogen and their respective stocks were evaluated. The native forest had the highest percentages of macroaggregates, followed by the integration system with African mahogany. At a depth of 0-0.10 m, the contents and stocks of carbon were higher in the agricultural area and in the integration system with cumaru, whereas nitrogen contents and stocks were higher in the native forest, followed by the integration systems with mahogany and cumaru. Compared to the other systems, the pasture area stored more carbon at depths of 0-0.10 and 0.10-0.20 m.

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“…The high TOC values present in the pasture are not only related to the amount of material produced, but also to the fact that their material components, such as lignins and polyphenols, are more resistant to degradation, which can guarantee a longer permanence of TOC in a system, when comparing with other (Dortzbach et al, 2015). On the other hand, the low TOC content in the corn area for silage is explained by the removal of all the aerial biomass produced in the crop area, so that the only input of organic matter comes from the roots and therefore in this system it was lower in all depths (Wendling et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

Quantification of the Carbon Content of the Fractions of Humic Substances and Total Organic Carbon in Different Production Systems

Rego¹,

Egewarth²,

Francziskowski³

et al. 2017

JAS

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Soil organic matter is degraded and easily altered by the type of management. The objective of this work is to determine the total organic carbon and humic substance fractions in the organic matter of the soil with different management types and depths in the western region of Paraná, Brazil. The work was carried out in the Experimental Farm "Professor Antônio Carlos dos Santos Pessoa", belonging to the State University of the West of Paraná. Five soil management systems were evaluated: one area with corn cultivation for silage (CS); other area with succession of crops, with soybean in summer and corn in winter (SC); the next area also with succession of crops, with soy in the summer and oat in the winter (SO); the following area with permanent pasture with Tifton (PP); and the last area with crop-livestock integration (ILC). For each management system, four plots were randomly selected, in each plot three simple samples were collected in a diagonal direction to form a composite sample for the depth of 0.00-0.05 m, 0.05-0.10 m and 0.10-0.15 m. Total organic carbon, fractionation of the humic substances and the AH/AF and EA/HUM ratios were calculated. For most of the analyzed variables, it was verified that there were significant differences (P < 0.05) between the systems evaluated in the studied depths. In the evaluated areas, the PP, SO and ILC systems presented the highest carbon content for all attributes analyzed.

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Estoque de C e Abundância Natural de 13C em Razão da Conversão de Áreas de Floresta e Pastagem em Bioma Mata Atlântica

Cited by 20 publications

References 44 publications

Soil organic matter fractions and carbon management index under integrated crop-livestock system

Soil organic matter fractions and carbon management index under integrated crop-livestock system

Aggregation, carbon, and total soil nitrogen in crop-livestock-forest integration in the Eastern Amazon

Quantification of the Carbon Content of the Fractions of Humic Substances and Total Organic Carbon in Different Production Systems

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