Methane formation in aerobic environments
Methane formation in aerobic environments
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DOI：
10.1071/en09137
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发表时间：
2009-01-01
影响因子：
4.3
通讯作者：
Schnitzler, Joerg-Peter
中科院分区：
文献类型：
--
作者：
Keppler, Frank;Boros, Mihaly;Schnitzler, Joerg-Peter
甲烷（CH4）是大气中含量最多的还原性有机化合物，在大气化学中起着核心作用，是仅次于CO2的第二大人为温室气体。因此，全面了解其源和汇以及控制排放的参数是模拟过去、现在和未来大气条件的先决条件。直到最近，生物CH4的形成一直只与缺氧环境和产甲烷活动有关。然而，越来越多的令人信服的证据表明，在需氧生物圈中有其他途径，包括陆生植物、土壤、海洋藻类和动物。识别和描述这些来源对于完善我们对控制大气环境中CH4的生物地球化学循环及其作为温室气体的影响的理解至关重要。
Methane (CH4), the second principal anthropogenic greenhouse gas after CO2, is the most abundant reduced organic compound in the atmosphere and plays a central role in atmospheric chemistry. Therefore a comprehensive understanding of its sources and sinks and the parameters that control emissions is prerequisite to simulate past, present and future atmospheric conditions. Until recently biological CH4 formation has been associated exclusively with anoxic environments and methanogenic activity. However, there is growing and convincing evidence of alternative pathways in the aerobic biosphere including terrestrial plants, soils, marine algae and animals. Identifying and describing these sources is essential to complete our understanding of the biogeochemical cycles that control CH4 in the atmospheric environment and its influence as a greenhouse gas.