Effects on the composition and structural properties of the humified organic matter of soil in sugarcane strawburning: A chronosequence study in the Brazilian Cerrado of Goiás State

Rossi, Celeste Queiroz; Pereira, Marcos Gervásio; García, Andrés Calderín; Berbara, Ricardo Luís Louro; Gazolla, Paulo Roberto; Perín, Adriano; Paz‐González, Antonio

doi:10.1016/j.agee.2015.09.022

Cited by 15 publications

(9 citation statements)

References 36 publications

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“…The aromaticity (aromatic-C/total C functional groups ratio) was similar between the forest and grassland soils. Several studies found that wildfire and incomplete combustion increased the soil aromatic-C content and aromaticity (Vergnoux et al 2011a ; Faria et al 2015 ; Rossi et al 2016 ). However, aromatic-C is dominant in recalcitrant substances such as cutins, lignin, lipids, resins, surface waxes and tannin (Wang et al 2016 ), and is usually found in woody forest soils.…”

Section: Discussionmentioning

confidence: 99%

“…The chemical composition of SOC in particle-size fractions may also affect soil microbial activity and decomposition rate of SOC (Beyer 1995 ). This information can be valuable for determining changes in the SOC pools with changes in plant cover or climate (Rossi et al 2016 ).…”

Section: Introductionmentioning

confidence: 99%

“…It is also useful to evaluate changes in SOC pools and humification under different environmental impacts. For example, Rossi et al ( 2016 ) used 13 C NMR spectroscopy to characterize the change in composition and structure of SOC after fire disturbance. Faria et al ( 2015 ) used the NMR spectroscopy technique and found that wildfire increased the aromaticity of the topsoil SOC in forest in Portugal.…”

Section: Introductionmentioning

confidence: 99%

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13C NMR spectroscopy characterization of particle-size fractionated soil organic carbon in subalpine forest and grassland ecosystems

Shiau

Chen²,

Chung

et al. 2017

Bot Stud

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Background: Soil organic carbon (SOC) and carbon (C) functional groups in different particle-size fractions are important indicators of microbial activity and soil decomposition stages under wildfire disturbances. This research investigated a natural Tsuga forest and a nearby fire-induced grassland along a sampling transect in Central Taiwan with the aim to better understand the effect of forest wildfires on the change of SOC in different soil particle scales. Soil samples were separated into six particle sizes and SOC was characterized by solid-state 13 C nuclear magnetic resonance spectroscopy in each fraction. Results:The SOC content was higher in forest than grassland soil in the particle-size fraction samples. The O-alkyl-C content (carbohydrate-derived structures) was higher in the grassland than the forest soils, but the alkyl-C content (recalcitrant substances) was higher in forest than grassland soils, for a higher humification degree (alkyl-C/O-alkyl-C ratio) in forest soils for all the soil particle-size fractions. Conclusions:High humification degree was found in forest soils. The similar aromaticity between forest and grassland soils might be attributed to the fire-induced aromatic-C content in the grassland that offsets the original difference between the forest and grassland. High alkyl-C content and humification degree and low C/N ratios in the fine particle-size fractions implied that undecomposed recalcitrant substances tended to accumulate in the fine fractions of soils.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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13C NMR spectroscopy characterization of particle-size fractionated soil organic carbon in subalpine forest and grassland ecosystems

Shiau

Chen²,

Chung

et al. 2017

Bot Stud

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“…Recent studies regarding SOM have shown the application of spectroscopic techniques (JIMÉNEZ-GONZÁLEZ et al, 2016;ROSSI et al, 2016;MARTINS et al, 2011;SANTOS et al, 2010;POTES et al, 2010) in the chemical and structural characterization of this soil constituent. Among these techniques, the FTIR stands out.…”

Section: Introductionmentioning

confidence: 99%

Reducción De Riesgos De Desastres E Infraestructuras Críticas: Municipalidades, Factores Institucionales Y Decisiones

Valdivieso¹

2019

A Preservação Do Meio Ambiente E O Desenvolvimento Sustentável 2

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“…Solid-state 13 C nuclear magnetic resonance spectroscopy with cross-polarization and magic-angle spinning (CP-MAS 13 C NMR) has been used to determine the functional groups and humification of SOM [ 17 ]. For example, Rossi [ 18 ] used NMR spectroscopy to characterize the change in composition and structure of SOM after fire disturbance. Faz Cano et al [ 19 ] indicated that O-alkyl-C content increased but aromatic-C content decreased with increasing elevation.…”

Section: Introductionmentioning

confidence: 99%

Humic Acid Composition and Characteristics of Soil Organic Matter in Relation to the Elevation Gradient of Moso Bamboo Plantations

et al. 2016

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Studying the influence of climatic and/or site-specific factors on soil organic matter (SOM) along an elevation gradient is important for understanding the response of SOM to global warming. We evaluated the composition of SOM and structure of humic acids along an altitudinal gradient from 600 to 1400 m in moso bamboo (Phyllostachys edulis) plantations in central Taiwan using NMR spectroscopy and photometric analysis. Total organic C and total nitrogen (N) content increased with increasing elevation. Aromaticity decreased and ΔlogK (the logarithm of the absorbance ratio of humic acids at 400 and 600 nm) increased with increasing elevation, which suggests that SOM humification decreased with increasing elevation. High temperature at low elevations seemed to enhance the decomposition (less accumulation of total organic C and N) and humification (high aromaticity and low ΔlogK). The alkyl-C/O-alkyl-C (A/O-A) ratio of humic acids increased with increasing elevation, which suggests that SOM humification increased with increasing elevation; this finding was contrary to the trend observed for ΔlogK and aromaticity. Such a discrepancy might be due to the relatively greater remaining of SOM derived from high alkyl-C broadleaf litter of previous forest at high elevations. The ratio of recalcitrant C to total organic C was low at low elevations, possibly because of enhanced decomposition of recalcitrant SOM from the previous broadleaf forest during long-term intensive cultivation and high temperature. Overall, the change in SOM pools and in the rate of humification with elevation was primarily affected by changes in climatic conditions along the elevation gradient in these bamboo plantations. However, when the composition of SOM, as assessed by NMR spectroscopy and photometric analysis was considered, site-specific factors such as residual SOM from previous forest and intensive cultivation history could also have an important effect on the humic acid composition and humification of SOM.

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Effects on the composition and structural properties of the humified organic matter of soil in sugarcane strawburning: A chronosequence study in the Brazilian Cerrado of Goiás State

Cited by 15 publications

References 36 publications

13C NMR spectroscopy characterization of particle-size fractionated soil organic carbon in subalpine forest and grassland ecosystems

13C NMR spectroscopy characterization of particle-size fractionated soil organic carbon in subalpine forest and grassland ecosystems

Reducción De Riesgos De Desastres E Infraestructuras Críticas: Municipalidades, Factores Institucionales Y Decisiones

Humic Acid Composition and Characteristics of Soil Organic Matter in Relation to the Elevation Gradient of Moso Bamboo Plantations

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