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Effects of Metal Oxide Nanoparticles on Nitrous Oxide Emissions in Agriculture Soil

Author

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  • Lanfang Hu

    (College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
    Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
    Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China)

  • Ziyi Feng

    (Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430073, China)

  • Yongxiang Yu

    (Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
    Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China)

  • Huaiying Yao

    (Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
    Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China
    Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430073, China)

Abstract

Metal oxide nanoparticles (NPs) have been widely used in industrial and agricultural production and introduced into soils. The impact of these nanoparticles on soil nitrous oxide (N 2 O) emission is unclear. We conducted a microcosm experiment to investigate the effects of titanium oxide nanoparticles (TiO 2 NPs), copper oxide nanoparticles (CuO NPs), and aluminum oxide nanoparticles (Al 2 O 3 NPs) on soil N 2 O emissions and the abundance of functional genes related to N 2 O production/reduction. Compared to the soil without NPs addition, TiO 2 NPs applied to the soil produced no significant effect on N 2 O emissions. The denitrification process in the soil exposed to CuO NPs was inhibited by reducing the functional genes related to nitrite reductase ( nirK ) and increasing N 2 O reductase ( nosZ ), while CuO NPs added to the soil stimulated the cumulative N 2 O emissions by 92.7%. After the application of Al 2 O 3 NPs to the soil, the nitrification process was inhibited by inhibiting the functional genes of ammonia-oxidizing bacteria (AOB amoA ), and soil N 2 O emission was reduced by 48.6%. Large-scale application of CuO NPs in agricultural soils may stimulate the N 2 O emissions resulting in potential environmental risks.

Suggested Citation

  • Lanfang Hu & Ziyi Feng & Yongxiang Yu & Huaiying Yao, 2022. "Effects of Metal Oxide Nanoparticles on Nitrous Oxide Emissions in Agriculture Soil," Agriculture, MDPI, vol. 12(6), pages 1-11, May.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:6:p:770-:d:825978
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    References listed on IDEAS

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    1. Ziyi Feng & Yongxiang Yu & Huaiying Yao & Chaorong Ge, 2021. "Effect of Zinc Oxide Nanoparticles on Nitrous Oxide Emissions in Agricultural Soil," Agriculture, MDPI, vol. 11(8), pages 1-12, July.
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