| 王世全,周美萍,刘亚俊杰,杨帆.我国七大区域农田氧化亚氮排放研究进展[J].农业环境科学学报,2025,44(8):2086-2096. |
| 我国七大区域农田氧化亚氮排放研究进展 |
| Progress of research on nitrous oxide emissions from agricultural fields in seven regions of China |
| 投稿时间：2024-09-16 |
| DOI：10.11654/jaes.2024-0781 |
| 中文关键词: 氧化亚氮 影响因素 区域特性 减排 |
| 英文关键词: nitrous oxide influencing factors regional characteristics emission reduction |
| 基金项目:宁夏自然科学基金项目（2023AAC03052）；宁夏科技厅项目（2022BSB03066） |
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| 中文摘要: |
| 本文通过对以往文献数据进行综述分析，研究了我国七大区域农田产N2O的影响因素和减排措施。结果表明：农田N2O排放途径由土壤反硝化过程主导，各地区硝化和反硝化的相对贡献取决于当地土壤物理化学性质和气候条件。我国七大区域农田N2O平均排放量为华东地区（0.32亿tCO2e>华中地区（0.21亿tCO2e）＞华南地区（0.17亿tCO2e）＞西南地区（0.16亿tCO2e）＞东北地区（0.13亿 tCO2e）>华北地区（0.08亿 tCO2e）>西北地区（0.06亿 tCO2e）。各区域影响因素情况不同，氮源、碳源、pH、含水量和温度是影响农田土壤N2O排放的主要影响因素。可以通过改变农田管理方式和土壤养分管理方式来实现N2O的节能减排。 |
| 英文摘要: |
| In this article, the influencing factors and emission reduction measures of N2O production from farmland in seven regions of China were investigated by reviewing and analyzing previous literature data. The results show that the farmland N2O emission pathway is dominated by the soil denitrification process, and the relative contributions of nitrification and denitrification in each region depend on the local soil physicochemical properties and climatic conditions. The average N2O emissions from farmland in the seven regions of China were as follows：East China（0.032 billion tCO2e）>Central China（0.021 billion tCO2e）>South China（0.017 billion tCO2e）>Southwest China （0.016 billion tCO2e）>Northeast China（0.013 billion tCO2e）>North China（0.008 billion tCO2e）>Northwest China（0.006 billion tCO2e）> Northwest China（0.006 billion tCO2e）. The situation of influencing factors was different in each region, and nitrogen source, carbon source, pH, water content and temperature were the main influencing factors affecting N2O in farmland soils. Energy saving and emission reduction of N2O can be realized by changing farmland management and soil nutrient management practices. |
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