Global food system emissions could preclude achieving the 1.5° and 2°C climate change targets
Global food system emissions could preclude achieving the 1.5° and 2°C climate change targets
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DOI：
10.1126/science.aba7357
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发表时间：
2020-11-06
期刊：
影响因子：
56.9
通讯作者：
Hill, Jason D.
中科院分区：
文献类型：
--
作者：
Clark, Michael A.;Domingo, Nina G. G.;Hill, Jason D.
《巴黎协定》的目标是将全球气温上升限制在比工业化前水平高1.5摄氏度或2摄氏度的水平，这要求迅速减少温室气体排放。虽然减少化石燃料的排放对实现这一目标至关重要，但其他排放来源也可能阻碍这一目标的实现。我们表明，即使化石燃料的排放立即停止，全球粮食系统目前的趋势也将阻碍1.5摄氏度目标的实现，并在本世纪末威胁到2摄氏度目标的实现。要实现1.5摄氏度的目标，需要对食品系统以及所有非食品部门进行迅速而雄心勃勃的改革。2摄氏度的目标可以通过对食品系统进行不那么雄心勃勃的改革来实现，但前提是化石燃料和其他非食品排放必须尽快消除。
The Paris Agreement's goal of limiting the increase in global temperature to 1.5 degrees or 2 degrees C above preindustrial levels requires rapid reductions in greenhouse gas emissions. Although reducing emissions from fossil fuels is essential for meeting this goal, other sources of emissions may also preclude its attainment. We show that even if fossil fuel emissions were immediately halted, current trends in global food systems would prevent the achievement of the 1.5 degrees C target and, by the end of the century, threaten the achievement of the 2 degrees C target. Meeting the 1.5 degrees C target requires rapid and ambitious changes to food systems as well as to all nonfood sectors. The 2 degrees C target could be achieved with less-ambitious changes to food systems, but only if fossil fuel and other nonfood emissions are eliminated soon.