在1890-2020年期间,来自牲畜物的全球二氧化排放:IPCC二级清单
Lei Zhang1,2,3, Shufen Pan3,4, Zhiyun Ouyang1,2
1State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
Global change biology
|May 14, 2024
概括
从1890年到2020年,来自牲畜物的全球氧化物 (N2O) 排放量从1890年到2020年升了350%,大大增加了大气中的N2O. 由于畜牧业生产率和排放量不断上升,迫切需要采取缓解措施.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 农业科学 农业科学
背景情况:
- 氧化 (N2O) 是一种强有力的温室气体和破坏臭氧层的物质.
- 全球范围内,牲畜便是人为N2O排放的重要来源.
- 了解这些排放的历史趋势和驱动因素对于减缓气候变化至关重要.
研究的目的:
- 为了估计在1890年至2020年期间,来自牲畜物的全球N2O排放量.
- 确定主要的畜牧业贡献者和N2O排放增长的区域模式.
- 评估畜牧业生产率对排放趋势的影响,并比较估计方法.
主要方法:
- 利用二级方法从2019年精炼到2006年IPCC指南的排放估计.
- 分析了从1890年到2020年的历史数据,考虑了不同的牲畜类型 (牛,家禽,猪,绵羊,山羊).
- 研究了牲畜生产力指标 (体重,牛奶产量) 和排放因子之间的相关性.
主要成果:
- 从1890年到2020年,来自畜牧物的全球N2O排放量增加了约350%,从1890年到2020年.
- 牛是排放增加的最大贡献者 (60%),其次是家禽,猪和绵羊/山羊.
- 南亚,非洲和拉丁美洲的排放增长最快,印度,中国和美国是主要的国家排放国.
结论:
- 畜牧业的生产率对N2O排放趋势产生重大影响,需要改进排放因子和模型参数化.
- 目前的估计显示,与2006年IPCC指南相比,该范围低20%-25%,突出了方法上的不确定性.
- 需要实质性和紧急的减缓战略,以应对来自牲畜物的N2O排放的快速增加.
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