Journalartikel
Autorenliste: Zhang, Yihe; Huang, Mengyuan; Ren, Haojie; Shi, Yue; Qian, Siyan; Wang, Yuxin; Zhang, Jinbo; Müller, Christoph; Li, Shuqing; Sardans, Jordi; Peñuelas, Josep; Zou, Jianwen
Jahr der Veröffentlichung: 2024
Zeitschrift: Geoderma
Bandnummer: 446
ISSN: 0016-7061
eISSN: 1872-6259
Open Access Status: Hybrid
DOI Link: https://doi.org/10.1016/j.geoderma.2024.116917
Verlag: Elsevier
Abstract:
We investigated the potential of ferric iron-modified biochar to lessen autotrophic nitrification and lower nitrous oxide (N2O) 2 O) emissions in paddy soils. A 15 N tracing incubation was conducted to investigate the changes in soil gross nitrogen (N) transformations under various biochar amendments (control, unmodified biochar, and Fe- modified biochar). Acetylene and 1-octyne were used to assess the relative contributions of ammonia- oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) to N2O 2 O emission from paddy soil. The Fe- modified biochar increased the rate of NH4+ 4 + immobilization by 26 % and 383 % compared to the control and unmodified biochar treatments, respectively. The gross rate of autotrophic nitrification was reduced to 5.43 mu g N g- 1 d-1 in the Fe-modified biochar treatment, compared to 6.74 mu g N g- 1 d-1 in the control treatment and 9.38 mu g N g-1 d-1 in the unmodified biochar treatment. Soil pH had varying effects on N2O 2 O emissions involving AOB and AOA. The N2O 2 O yields of AOA were more sensitive to Fe-modified biochar applications. AOB, specifically the Nitrosopira-AOB-AOB genus, dominated N2O 2 O production in all treatments. Overall, this study suggests that Fe-modified biochar holds greater potential than unmodified biochar in reducing N2O 2 O emissions from paddy soils by stimulating NH4+ 4 + adsorption, restraining autotrophic nitrification rates, and AOB-dominant N2O 2 O production pathways.
Zitierstile
Harvard-Zitierstil: Zhang, Y., Huang, M., Ren, H., Shi, Y., Qian, S., Wang, Y., et al. (2024) Nitrous oxide emissions in Fe-modified biochar amended paddy soil are controlled by autotrophic nitrification, Geoderma, 446, Article 116917. https://doi.org/10.1016/j.geoderma.2024.116917
APA-Zitierstil: Zhang, Y., Huang, M., Ren, H., Shi, Y., Qian, S., Wang, Y., Zhang, J., Müller, C., Li, S., Sardans, J., Peñuelas, J., & Zou, J. (2024). Nitrous oxide emissions in Fe-modified biochar amended paddy soil are controlled by autotrophic nitrification. Geoderma. 446, Article 116917. https://doi.org/10.1016/j.geoderma.2024.116917
