| Abstract: | Abstract Soil aeration status in relation to water table was analyzed by contour mapping in a forested wetland, an emergent marsh, and an irrigated rice field. Two soil aeration status indicators, oxygen (O2) and redox potential (Eh), showed a significant correlation (P<0.01). Soil O2 and Eh levels generally decreased with the water table rise in the forested wetland and marsh, but with a noncontinuous pattern. The results indicate that soil aeration status could be temporally improved at an optimum water table level, probably due to O2 transport by wetland plants. The soil Eh in the rice fields clearly showed a seasonal pattern regardless of the water tables. |
