STUDY of greenhouse gases in the atmosphere and soil is one of the main tasks in global change research project. At present, flux monitoring data of greenhouse gases discharging from soil is being accumulated, but scientists understand little about greenhouse gases within soil, especially in deeper soil. There are widely distributed loess sediments of great thickness in Northwest China, which in fact are paleosols that have experienced weaker pedogenesis under arid to semi-arid climate conditions. Study on concentration and distribution of greenhouse gases in deeper loess sediments will contribute to a better comprehensive understanding of discharging mechanism of greenhouse gases from soil to the atmosphere. In this note, we report our results andhave a preliminary discussion.
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