摘要 : Groundwater flow and nutrient transport were studied in a riparian meadow during a three-year period. The meadow is situated along a first order stream in the River Gjern catchment area, Jutland, Denmark. Field data included measu... 展开 Groundwater flow and nutrient transport were studied in a riparian meadow during a three-year period. The meadow is situated along a first order stream in the River Gjern catchment area, Jutland, Denmark. Field data included measurements of hydraulic head, hydraulic conductivity and soil characteristics. Groundwater sampled from piezometers was analysed for nitrate, ammonium and phosphate. Nitrogen and phosphorus contents in above-ground plant biomass were also measured. For the interpretation of our data we developed a one-dimensional hydraulic-transport model for the lateral groundwater flow, transport of nitrate, and nitrate removal in the meadow. The model is based on Darcy's equation, and input data are horizontal and vertical distances, hydraulic heads, hydraulic conductivities, and nitrate concentrations. We also developed a scheme for evaluating uncertainties of the modeling results. 收起