Abstract
A simple one-dimensional model which can evaluate the fate and transport of nitrogen in wetland soil-vegetation systems was developed to calculate the nitrogen removal efficiencies of reed bed wetlands. Seasonal variations of temperature, seasonal variations of nitrogen uptake by vegetation, vertical biomass distribution in root, and oxygen transport by vegetation were considered in the model. Field observations were conducted to determine some model parameters, although almost of all parameters were adopted from published literature data in Europe and North America. The model calculation results for the concentrations of NH4-N and NO3-N in the soils were about ten and two times larger than that of observations results. However, the calculation results for nitrogen removal efficiencies indicated the same trends compared with previous studies.
