Agricultural and Biological Sciences
4 years ago

Enhanced UV-B Radiation Reduces Greenhouse Gas Emissions from Soil-Wheat System

Environmental Sciences
Influence of Enhanced UV-B Radiation on Respiration Rate and N_2O Emission from Soil-Winter Wheat System
Zhenghua Hu

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Enhanced UV-B radiation was studied on soil-winter wheat systems. The study found that UV-B did not change the seasonal patterns of respiration rate and N2O emission. UV-B decreased respiration rate but had no significant impact on N2O emission during the turning-green stage. However, both respiration rate and N2O emission decreased during the elongation-pregnant stage. From heading to maturity, there was no significant difference in respiration rate and N2O emission compared to ambient conditions. Overall, UV-B significantly reduced the cumulative amount of N2O emitted from soil-winter wheat systems during the wheat turning green to full heading stage.