RECIPIENTBALANS SÖRMLAND – EN MODELL FÖR BERÄKNING AV FOSFORTRANSPORT I DE SÖRMLÄNDSKA VATTENDRAGEN / A Model for Calculating Phosphorus Transport in the Watercourses of the County of Södermanland, Sweden
The addition of plant nutrients to the sea is today one of the most important environmental problems. It is of the outmost importance that measures taken against such discharges will be as cost effective as possible. A computer based mathematical model is described to calculate the transport of phosphorus to the recipient. The drainage area is divided into compartments and the calculations are based on phosphorus addition from ground drainage as well as from point sources and atmospheric deposition, and on retention of phosphorus in the various parts of the water system.