尽管目前国内外对主要的温室气体源与汇研究报道很多，但不同的研究结果不尽一致，有些研究间甚至出现相反的结论。
In spite of a lot of studies on the source and sink of greenhouse gases reported, the different researches get different or even contrary conclusions.
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.
农田既是主要的温室气体排放源之一，也是潜在的碳汇。
Cropland is one of the greenhouse gas emission sources, but also a possible sink at the other side.
甲烷（CH4）是大气中仅次于CO2对全球变暖贡献第二大的温室气体，全球大气CH4的收支取决于CH4的源与汇。
Next to CO2, methane (CH4) is the second important contributor to global warming in the atmosphere and global atmospheric CH4 budget depends on both CH4 sources and sinks.
森林土壤是大气温室气体重要的源和汇，主要的温室效应气体CO2、CH4及N2O都直接或间接与这个系统有关。
Forest soil is the important source and sink of greenhouse gas in atmosphere. The main greenhouse effect gases, such as CO2, CH4 and N2O, are related to this system directly or indirectly.
人类通过改变土地利用方式，大量施用化肥等活动正在改变着土壤作为温室气体源和汇的强度。
However, as a source and a sink as well, soil is being changed because of human activities, such as changing land use and applying fertilizers.
人类通过改变土地利用方式，大量施用化肥等活动正在改变着土壤作为温室气体源和汇的强度。
However, as a source and a sink as well, soil is being changed because of human activities, such as changing land use and applying fertilizers.
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