Molecular fingerprint of soil organic matter as an indicator of pedogenesis processes in Technosols

Pascaud, Grégoire; Soubrand, Marilyne; Lemée, Laurent; Laduranty, J.; El-Mufleh, Amelène; Rabiet, Marion; Joussein, Emmanuel

doi:10.1007/s11368-016-1523-1

Cited by 15 publications

(6 citation statements)

References 46 publications

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“…A modern and complete determination of soil fertility involves the assessment of biological, chemical and physical aspects, and the consequent multiple and complex interactions/relations between these three aspects. For the physico-chemical characterization of soils, there are well-established protocols for the identification and quantification of soil ions and molecules by analytical chemistry protocols, such as extraction and fractionation (Huo et al, 1998;Qian et al, 1996;Wang et al, 2017;Xinde et al, 2000); chromatographic and spectroscopic methods (Hernandez-Soriano et al, 2016;Jáuregui et al, 1998;Malley et al, 1999;Pascaud et al, 2017;Udelhoven et al, 2003). However, both the particle (inorganic and organic) fractions present in the soil are difficult to identify, classify and characterize in soil samples, especially ex situ, without sample preparation/processing.…”

Section: Introductionmentioning

confidence: 99%

Morphological analysis of soil particles at multiple length-scale reveals nutrient stocks of Amazonian Anthrosols

et al. 2018

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We have imaged the particles of Brazilian soils at multiple length scales, from a few microns to millimeters, and soil particle size distributions were calculated with unmatched precision. The analysis included the Amazonian soil "Terra Mulata de Índio" (TMI), an anthropogenic soil (Anthrosol) with sustained fertility and a large amount of stabilized organic matter. Firstly, the soils were imaged ex situ, without any chemical processing, with sequential electron scanning of the pelletized soil samples, covering a total area of 8 × 8 mm. Secondly, it was performed a computational analysis of the large-field X-ray images assembled from hundreds of adjacent elemental maps, thus resulting in high-definition images (4800 × 4800 pixels). This analytical approach provides a large sampling with the identification of > 10,000 particles over the scanned area. The particles identified consisted of Al, C, Ca, Cr, F, Fe, Mg, Mn, Na, O, P, S, Si and Ti. A significantly larger concentration of C-, Ca-and P-based particles, of up to 100 μm 2 of cross-section area, was found in TMI samples in comparison with oxisol and ultisol soils. While the mean distance between neighboring C, Ca and P particles in TMI was of 40-70 μm, the value was of hundreds of microns in oxisol and ultisol. Furthermore, mapping of micrometric carbon particles by Raman spectroscopy indicated that they have a graphitic structure with a large amount of defects, partially associated with particle oxidation, although a well-preserved sp 2 graphitic structure is also present. From a technological perspective, improved soil amendments, such as biochar, can be rationally designed from the "fingerprint" described here for soil particles of Amazonian Anthrosols (i.e., morphological and structural characteristics), which can result in an increase in fertility and the optimization of carbon sequestration in the future.

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Section: Introductionmentioning

confidence: 99%

Morphological analysis of soil particles at multiple length-scale reveals nutrient stocks of Amazonian Anthrosols

et al. 2018

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“…A total of 368 biochemical components were identified and were classified into 10 groups according to chemical and analytical similarities (Pascaud et al 2017;Becker et al 2019;Chen et al 2019;Yan et al 2022): lipids, monocyclic-, polycyclic-aromatics, phenolics, polysaccharides, lignins, amino N-bearing compounds, heterocyclic N-bearing compounds, other N-bearing compounds and unidentified compounds. During the pyrolysis by Py-GC/ MS, amino acids were transformed by mistake easily into the imidazoles, indoles, pyridines, pyrroles, pyrazines, and mitriles, most commonly (Schulten and Schnitzer 1997;Becker et al 2019;Yan et al 2022).…”

Section: Determination Of Som Biochemical Compositionmentioning

confidence: 99%

Biochemical composition of soil organic matter physical fractions under 32-year fertilization in Ferralic Cambisol

Yang

Liu

et al. 2023

Carbon Res.

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Biochemical properties of soil organic matter (SOM) are fundamental for soil fertility and health. However, it is unclear how fertilization regime influences the biochemical compositions and oxidation states of SOM and physical fractions. In this study, this issue was studied under four 32-year amendment regimes: unfertilized control, urea (N), N + calcium dihydrogen phosphate + potassium chloride (NPK), and NPK plus manure (NPKM). Three physical fractions: coarse particulate (> 250 μm, cPOM), fine particulate (53–250 μm, fPOM) and mineral-associated OM (< 53 μm, MAOM) were separated and measured by pyrolysis gas chromatography/mass spectrometry (Py-GC/MS). Compared with the background in 1986, the SOM increased by 10.6%, 14.2%, 23% and 52% in unfertilized control, N, NPK, and NPKM, respectively. The red soil here had not reached carbon saturation, because of the low conversion efficiency (6.8%) from input-carbon to soil organic carbon (SOC). Physical size but not amendment type primarily regulated the SOM molecular composition, with relative selective retention of aromatics and lignin in both the cPOM and fPOM, whereas N-containing compounds (particularly amino-N) were enriched in MAOM due to their high abilities to adsorb soil minerals. The C oxidation state was also mainly dependent on physical size, with the highest value in fPOM. The sources of SOM and its fractions, dominated by microbial-derived compounds (60–90%), were independent of physical size and fertilization. In conclusion, physical size arrangement (proxy of microbial decomposition degree) played a more important role in regulating the SOM biochemical features than initial quality of various amendments. Graphical Abstract

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“…Among the 33 outliers of mine soils, 10 pieces of data concern former lignite mine soils (Greinert, Drab, & Sliwinska, 2018), two concern biochar and biomassamended copper-molybdenum-gold tailings (You, Dalal, & Huang, 2018), four concern an organic amended mine soil (Rodríguez-Vila, Forj an, Guedes, & Covelo, 2017), five concern former tin, zinc, lead and gold mines surface layers (Pascaud et al, 2017), two concern copper/lead-zinc mine tailings amended with sugarcane residues and compost (Yuan, Xu, Baumgartl, & Huang, 2016), four concern old soils of restored zinc and lead mining sites (Ciarkowska et al, 2016), four concern hard coal and pyrite mine soils (Uzarowicz & Skiba, 2011) and two concern sludge and ashamended soils developed on copper mine tailings (Asensio Fandino, Andrade Couce, Alonso Vega, & Fernandez Covelo, 2010).…”

Section: Land Usementioning

confidence: 99%

A meta‐analysis of carbon content and stocks in Technosols and identification of the main governing factors

Allory

Séré

Ouvrard

2021

European J Soil Science

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Molecular fingerprint of soil organic matter as an indicator of pedogenesis processes in Technosols

Cited by 15 publications

References 46 publications

Morphological analysis of soil particles at multiple length-scale reveals nutrient stocks of Amazonian Anthrosols

Morphological analysis of soil particles at multiple length-scale reveals nutrient stocks of Amazonian Anthrosols

Biochemical composition of soil organic matter physical fractions under 32-year fertilization in Ferralic Cambisol

A meta‐analysis of carbon content and stocks in Technosols and identification of the main governing factors

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