The study looked at how soil CO2 emissions differ between a wheat field and bare land in a dry area. They found that the wheat field emitted more CO2 than the bare land. The amount of CO2 released from the soil changed throughout the day and season, with the highest emissions during the wheat jointing stage. Soil moisture had a bigger impact on CO2 emissions than soil temperature. The number of soil bacteria and hydrogen peroxide activity also affected CO2 emissions. Overall, planting wheat increased soil carbon emissions on the Loess Plateau.