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Cited by 64Soil Carbon and Nitrogen DynamicsSoil and Water Nutrient DynamicsRice Cultivation and Yield Improvement

Biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China

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Wang, Yongsheng, Liu, Yansui, Liu, Ruliang, Zhang, Aiping, Yang, Shiqi, Liu, Hongyuan, Zhou, Yang, Yang, Zhengli·2017·Scientific Reports
DOI 10.1038/s41598-017-01173-wPMC PMC5431622
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Abstract

The efficacy of biochar as an environmentally friendly agent for non-point source and climate change mitigation remains uncertain. Our goal was to test the impact of biochar amendment on paddy rice nitrogen (N) uptake, soil N leaching, and soil CH 4 and N 2 O fluxes in northwest China. Biochar was applied at four rates (0, 4.5, 9 and13.5 t ha −1 yr −1 ). Biochar amendment significantly increased rice N uptake, soil total N concentration and the abundance of soil ammonia-oxidizing archaea (AOA), but it significantly reduced the soil NO 3 − -N concentration and soil bulk density. Biochar significantly reduced NO 3 − -N and NH 4 + -N leaching. The C2 and C3 treatments significantly increased the soil CH 4 flux and reduced the soil N 2 O flux, leading to significantly increased net global warming potential (GWP). Soil NO 3 − -N rather than NH 4 + -N was the key integrator of the soil CH 4 and N 2 O fluxes. Our results indicate that a shift in abundance of the AOA community and increased rice N uptake are closely linked to the reduced soil NO 3 − -N concentration under biochar amendment. Furthermore, soil NO 3 − -N availability plays an important role in regulating soil inorganic N leaching and net GWP in rice paddies in northwest China.

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Authors
Wang, Y., Liu, Y., Liu, R., Zhang, A., Yang, S., Liu, H., Zhou, Y., & Yang, Z.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Ningxia Academy of Agriculture and Forestry Sciences (CN)
  • Chinese Academy of Agricultural Sciences (CN)
Corresponding author
Zhang, Aiping
ORCID
Venue
Scientific Reports
Publisher
Springer Science and Business Media LLC
Published
2017-05-09
Volume
7
Issue
1
Pages
1592-1592
ISSN
2045-2322 (ISSN-L)
DOI
10.1038/s41598-017-01173-w
PMC
PMC5431622
OpenAlex
W2611882679
Cited by
64
References
58
Citations by year
2026: 5 · 2025: 7 · 2024: 5 · 2023: 8 · 2022: 5 · 2021: 10 · 2020: 12 · 2019: 3 · 2018: 8 · 2017: 1
FWCI
7.20
Type
journal article
Language
en
Open access
Licence
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Greater South Information System
Funders
National Natural Science Foundation of China (31660957, 41471143, 41130748)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Soil and Water Nutrient Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Rice Cultivation and Yield Improvement
Keywords
biochar amendment, paddy soil, nitrogen leaching, global warming potential, methane flux, nitrous oxide flux, ammonia-oxidizing archaea, rice nitrogen uptake, nitrate availability, soil nitrogen, soil carbon sequestration, irrigated agriculture, Ningxia

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