Cited by 67Soil Carbon and Nitrogen DynamicsSoil erosion and sediment transportFire effects on ecosystems

Negative priming effect of three kinds of biochar on the mineralization of native soil organic carbon

Liu, Yuxue, Chen, Ying, Wang, Yuying, Lu, Haohao, He, Lili, Yang, Shengmao·2018·Land Degradation & Development

Abstract

This study was conducted to improve our understanding of the effect of biochar on the degradation of original soil organic carbon (SOC) and the resulting net C sequestration. A 120‐day incubation experiment was conducted to detect the CO 2 evolution from soil amended with three kinds of biochar, namely, rice husk biochar (RH), pecan shell biochar (PS), and bamboo biochar (BB), at biochar to soil ratios of 0% (as control), 1%, 2%, and 5%, as well as 100% pure biochar, and to evaluate their priming effect on SOC mineralization. Results showed that the cumulative mineralized amounts of SOC decreased by 7.95–10.7% with 5% RH, PS, and BB treatments, whereas there were no significant differences in 1% or 2% biochar treatments after 120 days of incubation compared with the control. Biochar had a suppressing influence on native SOC decomposition, and the effect increased with the amount of applied biochar increasing. The negative priming effect of biochar on the mineralization of SOC was mainly observed after 15 days of incubation and increased with incubation time. The negative effects of BB and RH were significantly stronger than that of PS at the 5% application ratio. This was mainly due to the less pores and smaller specific surface area of PS, which resulted in the weaker encapsulation and adsorption protection effect of PS than RH and BB, and inhibited the degradation of the adsorbed native SOC. Therefore, BB and RH have great potential for C sequestration and mitigation, especially in soils with low organic C.

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Crossref · 10.1002/ldr.3147

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  • Negative priming is achieved via the physical entrapment of labile organic carbon by biochar matrix, thus preventing organic matter from being mineralized.

    “In contrast, negative priming is achieved via the physical entrapment of labile organic carbon by biochar matrix, thus preventing organic matter from being mineralized (Abbruzzini et al. 2017; Liu et al. 2018b; Lu et al. 2014).”

    From Role of biochar toward carbon neutrality (2023) · cites this paper as Liu et al. 2018b

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Authors
Liu, Y., Chen, Y., Wang, Y., Lu, H., He, L., & Yang, S.
Affiliations
ZheJiang Academy of Agricultural Sciences (CN)
Corresponding author
Yang, Shengmao
Venue
Land Degradation & Development
Publisher
Wiley
Published
2018-09-19
Volume
29
Issue
11
Pages
3985-3994
ISSN
  • 1085-3278 (ISSN-L)
  • 1099-145X
OpenAlex
W2891205341
Cited by
67
References
47
Citations by year
2026: 8 · 2025: 16 · 2024: 14 · 2023: 11 · 2022: 6 · 2021: 4 · 2020: 8
FWCI
2.80
Type
journal article
Language
en
Open access
closed
Locations
Land Degradation and Development (publishedVersion)
Funders
  • National Natural Science Foundation of China (41701334)
  • Natural Science Foundation of Zhejiang Province (LY14D010005)
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 › Environmental Science › Global and Planetary Change › Fire effects on ecosystems
Keywords
biochar, soil organic carbon mineralization, rice husk biochar, bamboo biochar, soil carbon sequestration, CO2 evolution, specific surface area, pore structure

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