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The global carbon balance is a core issue in climate change research and a focus of international policy concern [[1]]. Through the close relationships between CO SB 2 sb flux and soil temperature, combined with historical soil temperature data in the study area at 0 and 10 cm every hour between 2004 and 2017, we estimated the total amount of CO SB 2 sb exchange per year in the TD shifting sand (Fig. An average of 6.71 × 10 SP 6 sp t of CO SB 2 sb per year was released to the atmosphere through the physical process of thermal expansion of soil air containing CO SB 2 sb in the TD shifting sand during 2004-2017. Besides, the combined action of the remaining components (salt/alkali + moisture + microbes) led the TD shifting sand to absorb atmospheric CO SB 2 sb , with an average absorption rate of 8.31 × 10 SP 6 sp t a SP -1 sp during 2004-2017. [Extracted from the article]