The study looked at how increased UV-B radiation affects the respiration rate and N2O emission in soil-winter wheat systems. They found that enhanced UV-B radiation didn't change the overall pattern of respiration and N2O emission. UV-B radiation decreased respiration in the soil-winter wheat system but didn't have a significant impact on N2O emission during the turning-green stage. However, it did decrease both respiration and N2O emission during the elongation-pregnant stage. From heading to maturity, there was no significant difference in respiration rate and N2O emission under UV-B radiation compared to normal conditions. Overall, UV-B radiation significantly reduced the cumulative amount of N2O emitted from the soil-winter wheat system during the wheat turning green to full heading stage.