Microbes modify soil carbon emissions
Nature Geoscience
2010년4월26일
The physiology of microbes living underground could determine the amount of carbon dioxide emitted from soils on a warmer Earth, according to a study published online this week in Nature Geoscience.
Soil carbon emissions have been shown to increase in response to rising temperatures, but the long-term response is uncertain.
Steven Allison and colleagues examined the impact of microbial physiology on soil carbon emissions using a microbial enzyme model. Their simulations suggest that if microbial efficiency declines in a warmer world, carbon dioxide emissions will fall back to pre-warming levels, a pattern seen in some field experiments. But if microbes manage to adapt to the warmth, for instance through increases in enzyme activity, emissions could intensify.
doi: 10.1038/ngeo846
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