中国在2000年至2023年期间的温室气体预算
Wenping Yuan1, Minqi Liang2, Yuanyi Gao1
1Institute of Carbon Neutrality, Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
National science review
|March 31, 2025
概括
中国中国中国中国.
科学领域:
- 环境科学 环境科学
- 气候科学 气候科学
- 大气化学 大气化学
背景情况:
- 温室气体 (GHG) 排放是一个主要的全球问题.
- 中国正在积极致力于减少温室气体排放,并加强土地收获.
- 准确的温室气体流量监测对于中国的气候变化缓解努力至关重要.
研究的目的:
- 估计从2000年到2023年中国的长期温室气体来源和沉积点.
- 开发一个更新的中国温室气体预算数据集 (CNGHG).
- 为减排战略提供特定部门和区域温室气体流量数据.
主要方法:
- 利用了排放因子方法,基于过程的模型,大气逆转和数据驱动的模型.
- 估计来自所有人为和自然部门的温室气体流量.
- 编制了一个全面的中国温室气体预算数据集.
主要成果:
- 中国的总温室气体总排放量从2000年的5.0 Gt CO2-eq yr-1增加了三倍,到2023年的14.3 Gt CO2-eq yr-1.
- 在2023年的排放中,CO2,CH4和N2O分别占81.8%,12.7%和5.5%.
- 陆地生态系统充当了二氧化碳的净沉降器,在2012-2021年期间吸收了每年1.0亿二氧化碳.
结论:
- 能源部门是二氧化碳排放的主要来源.
- 农业,林业和其他土地利用是CH4和N2O的主要来源.
- 该研究为中国有针对性的温室气体减排提供了关键数据.
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