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甲烷是大气中主要温室气体之一.由于甲烷排放的增加,近200年来其在大气中的含量以每年1%的速度急剧上升,对温室效应贡献已达到15%～20%.广泛存在于自然界中的甲烷氧化细菌(Methanotrophic bacteria或Methane-oxidizing bacte-ria)能够以甲烷为唯一碳源和能源进行生长,通过甲烷
Methane is one of the major greenhouse gases in the atmosphere, and its contribution to the greenhouse effect has risen sharply by 1% annually over the past 200 years due to the increase in methane emissions, which has reached 15% -20% of the global warming potential. Methanotrophic bacteria or Methane-oxidizing bacte-ria can grow with methane as sole carbon and energy source,