Main medium: terrestrial Main subject: hydrology, agriculture Organization level: Ecosystem Type of model: partial differential equations (finite differences,1D), ordinary differential equations Main application: Keywords: soil, water,nitrogen, unsaturated, saturated, flow, solute transport, richards equation, hysteresis, convection-dispersion equation, complexation, first order decay
Contact:
Rao, P.S.C.
University of Florida, Soil Science Department
2169 McCarty Hall, Gainesville, FL 32611 phone: fax: email:
Author(s):
Rao, P.S.C.
Abstract:
NITROSIM is a one-dimensional finite difference model for transient simulation
of vertical transport, plant uptake, and transformations of nitrogen in the
rootzone. The model calculates nitrogen concentrations and fluxes. It can handle
capillary rise, infiltration and evaporation and allows for hysteresis in soils.
Transport and transformation processes included are advection, dispersion, ion
exchange, oxidation/reduction reactions, complexation, and first-order chemical
decay.