Cited by 547Soil Carbon and Nitrogen DynamicsFire effects on ecosystemsThermochemical Biomass Conversion Processes

The effect of young biochar on soil respiration

Smith, Jeffrey L., Collins, Harold P., Bailey, Vanessa L.·2010·Soil Biology and Biochemistry

Abstract

The low temperature pyrolysis of organic material produces biochar, a charcoal like substance. Biochar is being promoted as a soil amendment to enhance soil quality, it is also seen as a mechanism of long-term sequestration of carbon. Our experiments tested the hypothesis that biochar is inert in soil. However, we measured an increase in CO2 production from soils after biochar amendment which increased with increasing rates of biochar. The ∂13C signature of the CO2 evolved in the first several days of the incubation was the same as the ∂13C signature of the biochar, confirming that biochar contributed to the CO2 flux. This effect diminished by day 6 of the incubation suggesting that most of the biochar C is slowly decomposing. Thus, aside from this short-term mineralization increasing soil C with young biochar may indeed be a long-term C storage mechanism.

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Crossref · 10.1016/j.soilbio.2010.09.013

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  • Fresh low temperature biochars can contain significant amounts of labile C that can be readily utilised by soil microorganisms.

    “Fresh low temperature biochars can contain significant amounts of labile C that can be readily utilised by soil microorganisms [74]”

    From A Review of Biochar and Soil Nitrogen Dynamics (2013) · cites this paper as [74]

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Authors
Smith, J. L., Collins, H. P., & Bailey, V. L.
Affiliations
  • Washington State University (US)
  • Agricultural Research Service (US)
  • Pacific Northwest National Laboratory (US)
Corresponding author
Smith, Jeffrey L.
Venue
Soil Biology and Biochemistry
Publisher
Elsevier BV
Published
2010-12
Volume
42
Issue
12
Pages
2345-2347
ISSN
0038-0717 (ISSN-L)
OpenAlex
W1993950009
Cited by
547
References
10
Citations by year
2026: 13 · 2025: 17 · 2024: 31 · 2023: 43 · 2022: 28 · 2021: 52 · 2020: 23 · 2019: 52 · 2018: 36 · 2017: 32 · 2016: 47 · 2015: 43 · 2014: 43 · 2013: 30 · 2012: 33
FWCI
46.01
Type
journal article
Language
en
Open access
closed
Locations
Soil Biology and Biochemistry (publishedVersion)
Funders
  • Directorate for Biological Sciences
  • Biological and Environmental Research
  • Pacific Northwest National Laboratory
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Fire effects on ecosystems
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
Keywords
biochar, soil respiration, CO2 flux, carbon sequestration, biochar amendment, carbon mineralization, low-temperature pyrolysis, soil carbon storage, incubation

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