Effects of Drying and Rewetting Cycles on Carbon Dioxide Emissions and Soil Microbial Communities

Extreme rainfall and drought events attributed to climate change are anticipated occur in the current century, resulting frequent drying rewetting cycles (DWCs) soils, which will, turn, influence soil properties microorganisms. Sample plots of Sophora japonica, Pinus tabulaeformis, Ginkgo biloba were selected, undisturbed columns collected. CK was constant treatment; precipitation intensities R80, R40, R20 80 mm, 40 20 respectively, total for four treatments 160 mm. Significant differences observed cumulative CO2 emissions among various DWC frequencies same woodland soils. A significant correlation between Birch effect three Pearson’s analysis revealed that background nutrient contents key factors influencing alpha diversity. In conclusion, DWCs generally increased fluxes, emissions, addition decreasing diversity microorganisms when compared those treatment.