Exploring long-term effects of biochar on mitigating methane emissions from paddy soil: a review
Open accessAbstract
Biochar has been reported to mitigate short-term methane (CH 4 ) emissions from paddy soil. Currently, CH 4 mitigation by biochar has primarily focused on the abundance and variations of methanogens and methanotrophs, and changes in their activities during methane production and consumption. However, long-term effects of biochar on methane mitigation from paddy soil remain controversial. This review overviewed the existing mechanisms for CH 4 mitigation as a result of biochar application. In addition, the two existing opinions on the long-term CH 4 mitigation effect upon biochar application were highlighted. Combining the already explored mechanisms of fresh biochar on CH 4 mitigation from paddy soil and a novel discovery, the potential mechanisms of biochar on long-term methane emission response were proposed. This review also revealed the uncertain responses of biochar on long-term CH 4 mitigation. Therefore, to achieve carbon neutral goal, it is important to further explore the mechanisms of long-term CH 4 mitigation under biochar application.
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A faded liming effect, a gradual decrease of labile organic carbon content, as well as a slow improvement of soil aggregation and aeration are all potential influencing factors.
“A faded liming effect, a gradual decrease of labile organic carbon content, as well as a slow improvement of soil aggregation and aeration are all potential influencing factors (Nan et al. 2021a; Nan et al. 2021b).”
From Role of biochar toward carbon neutrality (2023) · cites this paper as Nan et al. 2021b
Cites
Cheng, C.-H., Lehmann, J., & Engelhard, M. H. (2008) · Geochimica et Cosmochimica Acta · doi:10.1016/j.gca.2008.01.010 · Cited by 936 · cited 1× · see citing works
“Various studies reported an increase of oxygen functional groups like hydroxyl, carbonyl, carboxyl, ketone and phenol groups in natural aged biochar (Cheng et al. 2008; Mia et al. 2017b; Qian and Chen 2014).”
BackgroundReducing CH4 and CO2 emissions from waterlogged paddy soil with biochar
Liu, Y., Yang, M., Wu, Y., Wang, H., Chen, Y., & Wu, W. (2011) · Journal of Soils and Sediments · doi:10.1007/s11368-011-0376-x · Cited by 393 · see citing works
Self-citationQuantifying the influence of biochar on the physical and hydrological properties of dissimilar soils
Peake, L. R., Reid, B. J., & Tang, X. (2014) · Geoderma · doi:10.1016/j.geoderma.2014.07.002 · Cited by 182 · see citing works
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Role of biochar toward carbon neutrality
Wang, L., Deng, J., Yang, X., Hou, R., & Hou, D. (2023) · Carbon Research · doi:10.1007/s44246-023-00035-7 · Cited by 195 · see citing works
- Authors
- Nan, Q., Xin, L., Qin, Y., Waqas, M., & Wu, W.
- Affiliations
- Zhejiang University (CN)
- Kohat University of Science and Technology (PK)
- Corresponding author
- Qin, Yong
- Venue
- Biochar
- Published
- 2021-05-05
- Volume
- 3
- Issue
- 2
- Pages
- 125-134
- ISSN
- 2524-7867 (ISSN-L)
- 2524-7972
- OpenAlex
- W3159677053
- Cited by
- 161
- References
- 4
- Citations by year
- 2026: 31 · 2025: 42 · 2024: 31 · 2023: 37 · 2022: 15 · 2021: 5
- FWCI
- 12.84
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Biochar (publishedVersion, cc-by)
- Funders
- National Natural Science Foundation of China (42077032, 41571241)
- National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2015BAC02B01)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
- Physical Sciences › Environmental Science › Ecology › Peatlands and Wetlands Ecology
- Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric and Environmental Gas Dynamics
- Keywords
- methane emissions, paddy soil, paddy fields, long-term effects, methanogenic archaea, methanotrophic bacteria, greenhouse gas emissions reduction, carbon neutrality
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