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Methane and Global Environmental Change
Annual Review of Environment and Resources ( IF 16.4 ) Pub Date : 2018-10-17 , DOI: 10.1146/annurev-environ-102017-030154
Dave S. Reay 1 , Pete Smith 2 , Torben R. Christensen 3, 4 , Rachael H. James 5 , Harry Clark 6
Affiliation  

Global atmospheric methane concentrations have continued to rise in recent years, having already more than doubled since the Industrial Revolution. Further environmental change, especially climate change, in the twenty-first century has the potential to radically alter global methane fluxes. Importantly, changes in temperature, precipitation, and net primary production may induce positive climate feedback effects in dominant natural methane sources such as wetlands, soils, and aquatic ecosystems. Anthropogenic methane sources may also be impacted, with a risk of enhanced emissions from the energy, agriculture, and waste sectors. Here, we review the global sources of methane, the trends in fluxes by source and sector, and their possible evolution in response to future environmental change. We discuss ongoing uncertainties in flux estimation and projection, and highlight the great potential for multisector methane mitigation as part of wider global climate change policy.

中文翻译:

甲烷与全球环境变化

近年来,全球大气甲烷浓度持续上升,自工业革命以来已经增加了一倍多。二十一世纪的进一步环境变化,尤其是气候变化,有可能从根本上改变全球甲烷通量。重要的是,温度、降水和净初级生产的变化可能会对主要的天然甲烷来源(如湿地、土壤和水生生态系统)产生正气候反馈效应。人为甲烷来源也可能受到影响,能源、农业和废物部门的排放量可能会增加。在这里,我们回顾了全球甲烷来源、来源和部门的通量趋势,以及它们在应对未来环境变化时可能发生的演变。
更新日期:2018-10-17
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