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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.8
- 수록면
- 164 - 174 (11page)
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초록· 키워드
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Nitrous oxide (N₂O) can be produced via microbial oxidation of ammonia (nitrification) in the aerobic soil. Warming, a factor influencing microbial activity, can increase the rates of ammonia oxidation and N₂O emissions. However, the amount of ammonia, a substrate of nitrification process, is a critical factor in determining the cumulative N₂O emissions from agricultural fields receiving nitrogen (N) fertilizer. To investigate the effects of increasing temperature on temporal variation and cumulative amount of N₂O emissions in aerobic soil, we conducted an incubation experiment with soil treated with ammonium sulfate at 15 and 25℃. To maintain soil aeration, the soil water content during the incubation period was adjusted to the field capacity, and the concentrations of inorganic soil N (NH₄⁺-N and NO₃⁻-N) and N₂O emissions were periodically measured. During the incubation period, the sum of inorganic soil N increased due to the mineralization of organic N. The net increase in NO₃⁻ concentration, a product of ammonia oxidation, was 6% higher at 25℃ than at 15℃, reflecting the increase in nitrification process following the increased mineralization of organic N. Nitrous oxide was mainly emitted during periods when sufficient NH₄⁺ was present in soil, reflecting that ammonia oxidation was the main process of N₂O production. Accumulated N₂O emissions were 10% higher at 25℃ than at 15°C, but the difference was statistically insignificant (P ＞ 0.05). Despite the small and insignificant difference in accumulated N₂O emissions between 15 and 25℃, 60% of the difference is attributable to the increase in the nitrification reaction. The results of this study suggest that N₂O emissions may increase due to increased temperature in soil fertilized with N, but this increase is mainly attributable to increased mineralization of organic N and subsequent increased nitrification.
목차
ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
참고문헌 (32)
참고문헌 신청
An J, Lee Y, Lee J, Song J, Kim SY. 2024. Effects of Bacillus velezensis strain GH1-13 seed-soaking inoculation on rice productivity and greenhouse gas (CH4 and N2O) emissions in a paddy soil during cultivation: A pot experiment. Korean J. Soil Sci. Fert. 57:63-72. https://doi.org/10.7745/KJSSF.2024.57.1.063
Avrahami S, Liesack W, Conrad R. 2003. Effects of temperature and fertilizer on activity and community structure of soil ammonia oxidizers. Environ. Microbiol. 5:691-705. https://doi.org/10.1046/j.1462-2920.2003.00457.x
Bahram M, Espenberg M, Pärn J, Lehtovirta-Morley L, Anslan S, Kasak K, Kõljalg U, Liira J, Maddison M, Moora M, et al. 2022. Structure and function of the soil microbiome underlying N2O emissions from global wetlands. Nat. Commun. 13:1430. https://doi.org/10.1038/s41467-022-29161-3
Bateman EJ, Baggs EM. 2005. Contributions of nitrification and denitrification to N2O emissions from soils at different water-filled pore space. Biol. Fertil. Soils 41:379-388. https://doi.org/10.1007/s00374-005-0858-3
Bremner JM. 1997. Sources of nitrous oxide in soils. Nutr. Cycl. Agroecosyst. 49:7-16. https://doi.org/10.1023/A:1009798022569
Avrahami S, Liesack W, Conrad R. 2003. Effects of temperature and fertilizer on activity and community structure of soil ammonia oxidizers. Environ. Microbiol. 5:691-705. https://doi.org/10.1046/j.1462-2920.2003.00457.x
Bahram M, Espenberg M, Pärn J, Lehtovirta-Morley L, Anslan S, Kasak K, Kõljalg U, Liira J, Maddison M, Moora M, et al. 2022. Structure and function of the soil microbiome underlying N2O emissions from global wetlands. Nat. Commun. 13:1430. https://doi.org/10.1038/s41467-022-29161-3
Bateman EJ, Baggs EM. 2005. Contributions of nitrification and denitrification to N2O emissions from soils at different water-filled pore space. Biol. Fertil. Soils 41:379-388. https://doi.org/10.1007/s00374-005-0858-3
Bremner JM. 1997. Sources of nitrous oxide in soils. Nutr. Cycl. Agroecosyst. 49:7-16. https://doi.org/10.1023/A:1009798022569
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