【甲烷排放对温度非常敏感】Gabriel Yvon-Durocher Andrew P. Allen David Bastviken Ralf Conrad Cristian Gudasz Annick St-Pierre Nguyen Thanh-Duc & Paul A. del Giorgio. Methane fluxes show consistent temperature dependence across microbial to ecosystem scales. Nature 507 488–491 (27 March 2014) doi:10.1038-nature13164

甲烷是一种强效温室气体，全球变暖潜力比二氧化碳大很多倍，所以了解其排放会怎样随温度升高而改变对于气候预测很重要。这些作者根据有关实验室培养物、环 境样本和整个生态系统的研究工作对甲烷排放的温度依赖性进行了一个元分析。他们发现，甲烷排放随温度升高而增加的速度要快于碳循环中另外两个关键速度过 程：呼吸作用和光合作用。这种效应从在实验室中的个别产烷生物的培养物到整个生态系统按比例来说都相同。（来源：中国科学报 田天）

Abstract

Methane (CH₄) is an important greenhouse gas because it has 25 times the global warming potential of carbon dioxide (CO₂) by mass over a century¹. Recent calculations suggest that atmospheric CH₄ emissions have been responsible for approximately 20% of Earth’s warming since pre-industrial times². Understanding how CH₄ emissions from ecosystems will respond to expected increases in global temperature is therefore fundamental to predicting whether the carbon cycle will mitigate or accelerate climate change. Methanogenesis is the terminal step in the remineralization of organic matter and is carried out by strictly anaerobic Archaea³. Like most other forms of metabolism methanogenesis is temperature-dependent