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

Lanfang Hu, Ziyi Feng, Yongxiang Yu and Huaiying Yao
Additional contact information
Lanfang Hu: College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, 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
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

Agriculture, 2022, vol. 12, issue 6, 1-11

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.

Keywords: nanoparticles; N 2 O; nitrification; denitrification (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2077-0472/12/6/770/pdf (application/pdf)
https://www.mdpi.com/2077-0472/12/6/770/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jagris:v:12:y:2022:i:6:p:770-:d:825978

Access Statistics for this article

Agriculture is currently edited by Ms. Leda Xuan

More articles in Agriculture from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().