越来越多的中国农场二氧化排放对辐射强迫的贡献需要更多的关注
Xi Luo1, Tian Xia1, Wei Xiong1
1College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China.
The Science of the total environment
|January 10, 2025
概括
中国的农业甲排放已经稳定,达到气候目标. 然而,长期存在的氧化排放量正在增加,需要更加关注气候稳定.
科学领域:
- 农业科学 农业科学
- 气候科学 气候科学
- 环境科学 环境科学
背景情况:
- 农业系统是非二氧化碳 (CO2) 温室气体 (GHG) 的重要来源,特别是甲 (CH4).
- 中国是CH4的主要排放国,引起了相当大的研究兴趣.
- 评估农业温室气体对气候的影响需要适当的指标.
研究的目的:
- 首次将基于辐射强迫的气候足迹 (RFCF) 指标应用于中国农场的非二氧化碳温室气体排放.
- 为了比较来自中国农业的甲 (CH4) 和氧化 (N2O) 排放对气候的影响.
- 评估中国农业部门在辐射强迫 (RF) 稳定方面取得的进展.
主要方法:
- 使用基于辐射强迫的气候足迹 (RFCF) 指标.
- 分析了中国农场内甲 (CH4) 和氧化 (N2O) 的排放情况.
- 从1961年到2021年,研究了排放趋势及其对射频的贡献.
主要成果:
- 中国的CH4排放对RFCF的贡献在2011年停滞不前,到2017年实现了RF的净零增长.
- 氧化 (N2O) 是一种长期存在的温室气体,在中国农场门的总RFCF中,其比例越来越高.
- 在全球农场RFCF中CH4的份额下降,而N2O的份额从1961年至2021年增加.
结论:
- 虽然CH4排放显示稳定,但N2O排放的影响日益增加,需要在中国更加关注.
- RFCF指标对于评估RF稳定性的进展非常有价值.
- 建议将RFCF方法广泛应用于中国农业和其他生物 CH4 排放部门的气候行动.
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