碳从源到汇的转运以糖的形式尤其是蔗糖进行的。
Carbon is transported from source to sink in the form of sugars, especially sucrose.
土壤碳是全球碳循环中的重要组成部分，土地利用方式的改变对土壤碳的源和汇具有很大的影响。
Soil carbon is a significant component of global carbon cycling, the change of land use pattern has a great influence on soil carbon source or sink.
泥炭地是一个巨大的碳库，是温室气体的源或汇。
Peatland is a large carbon reservoir, which can act as a source or sink of greenhouse gases.
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