Effects of precipitation and soil moisture on N2O  emissions from upland soils in Guizhou

Abstract

Abstract: Soils of corn-rape seed rotation,soybean-winter wheat rotation and fallow land in Guizhou were representatively selected to study effects of precipitation and soil moisture on N₂O emissions.Furthermore,DNDC model was used to assess the potential effects of variations in precipitation in future on N₂O emissions from above lands.The results indicated that N₂O emission pulses were obviously driven by rainfall and N₂O fluxes were correlated positively with precipitation and soil moisture.The results from DNDCmodeling showed that N₂O fluxes from soils in summer and autumn would be correlated positively with precipitation,but N₂O fluxes in winter and spring would slightly decrease with great change of precipitation.

Key words: N₂O , Precipitation, Soil moisture, Upland soils, DNDC model, quality of population urbanization, coupled coordination, quality of land urbanization

CLC Number:

X142

XU Wenbin, LIU Guangshen, LIU Weibing . Effects of precipitation and soil moisture on N₂O emissions from upland soils in Guizhou[J]. Chinese Journal of Applied Ecology, 2002, (1): 67-70.

References

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Effects of precipitation and soil moisture on N₂O emissions from upland soils in Guizhou

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