An eutrophication model for a lowland river-lake system

摘要

Natural and man induced nutrient loads affect the functioning of freshwater ecosystems and restrict various water uses. In particular, internal pollution by nutrient remobilisation from sediment plays an important role in shallow water bodies. A sustainable management of such freshwater ecosystems can be achieved by using simulation models. To forecast the eutrophication process of a shallow river-lake system a modelling and simulation framework was developed including phosphorus remobilisation from sediment. Data are taken from the Lower Havel River. For water quality management decision control strategies based on the limiting nutrient concept and threshold values of LAWA are discussed.