Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.agee.2025.110130 |
| Title (Primary) | Rhizosphere fungal community and microbial networks shape N2O emissions and crop yield in a rice-rapeseed rotation system under varying nitrogen levels: A case study from Southwest China |
| Author | Li, J.; Zhao, R.; Ye, T.; Zhu, C.; Chen, J.; Huang, P.; Yang, X. |
| Source Titel | Agriculture, Ecosystems & Environment |
| Year | 2026 |
| Department | BIOENERGIE |
| Volume | 398 |
| Page From | art. 110130 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Supplements | Supplement 1 |
| Keywords | Nitrous oxide emission; Nitrogen fertilizer; Greenhouse gas intensity; Co-occurrence network; Rapeseed; Sustainability |
| Abstract | The role of soil microorganisms in reducing nitrogen emissions and sustaining crop yield in rapeseed cultivation under different nitrogen fertilizer levels remains largely unclear. Previous research has primarily focused on individual factors, such as nitrogen application rate, nitrous oxide emissions, and yield, often overlooking the complex interactions among plant growth, soil properties, microbial communities, and environmental factors. In this study, we applied five nitrogen application rates: 0 (N0), 120 (N120), 150 (N150), 180 (N180), and 210 kg N ha−1 (N210) to identify the mechanisms by which nitrogen fertilization affects soil microecology in rapeseed cultivation. Compared with the N180 treatment, cumulative nitrous oxide emissions dropped 5–28 % under the N120 and N150 treatments and 19–63 % under the nitrogen-free treatment. Nitrous oxide fluxes showed no clear diurnal pattern across the five growth stages. Rapeseed yield over the two-year experiment ranged from 0.51 to 2.16 t ha−1 and increased consistently with higher nitrogen fertilizer rates. Considering the environmental benefits, yield improvements, and economic costs, an optimal nitrogen application rate of 180 kg ha−1 is recommended for Southwestern China. Microbiome analysis and structural equation modeling identified fungal communities and microbial interaction network complexity as key factors in reducing greenhouse gas emission intensity. Therefore, a lower fungal diversity combined with greater microbial network complexity and improved soil nutrition under optimal fertilization may help achieve sustainable and environmentally friendly rapeseed cultivation. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=31680 |
| Li, J., Zhao, R., Ye, T., Zhu, C., Chen, J., Huang, P., Yang, X. (2026): Rhizosphere fungal community and microbial networks shape N2O emissions and crop yield in a rice-rapeseed rotation system under varying nitrogen levels: A case study from Southwest China Agric. Ecosyst. Environ. 398 , art. 110130 10.1016/j.agee.2025.110130 |
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