Biochar affects carbon composition and stability in soil: a combined spectroscopy-microscopy study
Open accessAbstract
The use of biochar can contribute to carbon (C) storage in soil. Upon addition of biochar, there is a spatial reorganization of C within soil particles, but the mechanisms remain unclear. Here, we used Fourier transformed infrared-microscopy and confocal laser scanning microscopy to examine this reorganization. A silty-loam soil was amended with three different organic residues and with the biochar produced from these residues and incubated for 237 d. Soil respiration was lower in biochar-amended soils than in residue-amended soils. Fluorescence analysis of the dissolved organic matter revealed that biochar application increased a humic-like fluorescent component, likely associated with biochar-C in solution. The combined spectroscopy-microscopy approach revealed the accumulation of aromatic-C in discrete spots in the solid-phase of microaggregates and its co-localization with clay minerals for soil amended with raw residue or biochar.The co-localization of aromatic-C:polysaccharides-C was consistently reduced upon biochar application. We conclude that reduced C metabolism is an important mechanism for C stabilization in biochar-amended soils.
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The changes in functional groups and their distribution in soil microaggregates are influenced by the presence of biochar, this being indicative of changes in the physical protection and processing of C in soil.
“The changes in functional groups and their distribution in soil microaggregates are influenced by the presence of biochar, this being indicative of changes in the physical protection and processing of C in soil (Hernandez-Soriano et al. 2016).”
From Biochar physicochemical properties: pyrolysis temperature and feedstock kind effects (2020) · cites this paper as Hernandez-Soriano et al. 2016
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References 66 · Cited by 123
Research works printed but not linked: 1
- Lehmann J., Gaunt J. & Rondon M. Biochar sequestration in terrestrial ecosystems: A review. Mitig. Adapt. Strateg. Glob. Change 11, 395– 419 (2006).
- Authors
- Hernandez-Soriano, M. C., Kerré, B., Kopittke, P. M., Horemans, B., & Smolders, E.
- Affiliations
- KU Leuven (BE)
- The University of Queensland (AU)
- Venue
- Scientific Reports
- Published
- 2016-04-26
- Volume
- 6
- Issue
- 1
- Pages
- 25127-25127
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC4844975
- OpenAlex
- W2342429920
- Cited by
- 123
- References
- 66
- Citations by year
- 2026: 7 · 2025: 13 · 2024: 11 · 2023: 23 · 2022: 10 · 2021: 11 · 2020: 15 · 2019: 17 · 2018: 10 · 2017: 4 · 2016: 2
- FWCI
- 12.84
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Scientific Reports (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Lirias (submittedVersion, other-oa)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil erosion and sediment transport
- Physical Sciences › Engineering › Civil and Structural Engineering › Soil and Unsaturated Flow
- Keywords
- biochar, soil carbon stabilization, organic amendments, soil respiration, dissolved organic matter fluorescence, aromatic carbon, microaggregates, clay minerals, polysaccharides, soil carbon storage
- MeSH terms
- Carbon, Charcoal, Organic Chemicals, Soil, Spectroscopy, Fourier Transform Infrared, Microscopy, Confocal
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