Distinguishing direct N2O emissions from 15N-labeled manure compost, urea, and maize roots in a field study
文献类型：期刊论文
| 作者 | Liu, Liting1,2; Zhu, Ouyang2; Li, Jing2 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 352页码:110049 |
| 关键词 | Manure compost Integrated crop-livestock system Emission factor N-15-labeling |
| DOI | 10.1016/j.agrformet.2024.110049 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Nitrous oxide (N2O) emissions from agricultural activities are a significant contributor to global anthropogenic N2O emissions. Sustainable agriculture practices, including using manure compost to replace nitrogen (N) fertilizers, can reduce chemical fertilizer use and minimize negative impacts on soil health and water quality. However, the direct contributions of manure compost to N2O emissions have not been fully studied. We conducted a field study to distinguish the direct contributions of manure compost, urea, and residual maize roots to N2O emissions in an integrated crop-livestock agricultural system in Shandong Province, China. Using the N-15-labeling technique, we found that the majority (93.3%) of cumulative N2O emissions originated from the soil and other unaccounted sources. Notably, manure compost contributed 1.3%, while current-year urea, residual urea with root exudates, and maize root accounted for 3.4%, 1.9%, and 0.03% of cumulative N2O, respectively. Our results also demonstrated that applying manure compost in combination with urea resulted in lower seed yield-scaled N2O emissions (0.046 g N2O-N kg(-1) seed) compared to applying urea alone, even when the total N input was identical, suggesting the potential of manure compost in a more sustainable agriculture model. The low emission factor of manure compost (0.005%) compared to urea (0.019%) supports this potential, indicating the slow-release nature of manure may mitigate N2O while maintaining crop yield. Additionally, the overall low emissions may be attributed to the relatively high soil pH (8.17), which influences the denitrification product ratio, favoring the conversion of N2O to N-2. Our study provides valuable insights into the factors contributing to N2O emissions in integrated crop-livestock farming systems, and highlights the importance of distinguishing multiple sources of N2O emissions to develop effective strategies for reducing emissions while promoting sustainable agriculture. |
| WOS关键词 | NITROUS-OXIDE EMISSIONS ; INORGANIC FERTILIZER ; MINERAL FERTILIZER ; SOIL ; DYNAMICS ; METHANE ; NITRATE |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001240096200001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/205336]  |
| 专题 | 黄河三角洲现代农业工程实验室_外文论文 |
| 通讯作者 | Liu, Liting |
| 作者单位 | 1.Natl Ctr Technol Innovat Comprehens Utilizat Salin, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, CAS Engn Lab Yellow River Delta Modern Agr, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Liting,Zhu, Ouyang,Li, Jing. Distinguishing direct N2O emissions from 15N-labeled manure compost, urea, and maize roots in a field study[J]. AGRICULTURAL AND FOREST METEOROLOGY,2024,352:110049. |
| APA | Liu, Liting,Zhu, Ouyang,&Li, Jing.(2024).Distinguishing direct N2O emissions from 15N-labeled manure compost, urea, and maize roots in a field study.AGRICULTURAL AND FOREST METEOROLOGY,352,110049. |
| MLA | Liu, Liting,et al."Distinguishing direct N2O emissions from 15N-labeled manure compost, urea, and maize roots in a field study".AGRICULTURAL AND FOREST METEOROLOGY 352(2024):110049. |
入库方式： OAI收割
来源：地理科学与资源研究所
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