Figure 1.
Air temperature records and rainfall events at the study site during the experimental period.
(Tmean: mean temperature; Tmax: maximum temperature; Tmin: minimum temperature).
Figure 2.
Seasonal variations of soil CO2 flux, soil temperature (2 cm) and crop canopy temperature in an intermittent draining and flooding rice paddy.
The insets indicate box-plot of soil CO2 fluxes under flooded and drained conditions, and box-plot of canopy air and soil temperature during the 2011 rice-growing season.
Figure 3.
Diurnal patterns of soil CO2 flux related to PAR, canopy air temperature and soil temperature (2 cm) under both drained and flooded condtions in a rice paddy.
Figure 4.
Soil CO2 fluxes, soil temperature (2 cm) and canopy temperature before, during, and after the flooding and draining cycle in a rice paddy field.
Figure 5.
Relationship between soil CO2 fluxes and temperature under both flooded and drained conditions.
The solid lines represent the regression functions under flooded conditions, and the dashed lines represent the regression functions under drained conditions. (SCF: soil CO2 fluxes; T: temperature).
Figure 6.
Schematic comparison of soil CO2 flux processes under the flooded and the drained conditons in rice paddies.