期刊
WATER RESEARCH
卷 43, 期 6, 页码 1788-1800出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2009.01.007
关键词
Lake management; Lake restoration; Models; Phosphorus balance
资金
- Kompeterizzentrum Wasser Berlin
Management models for aquatic systems can be used to deter-mine which measures in the watershed or in the water body have been effective and/or which one should be used in future. The newly developed management models presented in the following for Lake Tegel and Schlachtensee are empirical and lake specific. The values for the unknown factors are estimated by an iterative process using optimisation routines and sensitivity analysis methods. The resulting models describe the water and phosphor-us balance of each lake. The Lake Tegel water balance model calculates the unknown water inflow from the River Havel depending on the other main in- and outflows with very good validation results. The phosphorus models of both lakes quantify mixing of the upper and lower water body as well as sedimentation and release from the sediment as functions of measured variables. For Lake Tegel, management scenarios were run indicating effective management interventions. For Lake Schlachtensee, the phosphorus model captured the variations in the hypolimnion well but produced poorer results for the epilimnion because of unknown external phosphor-us loads. For these the model indicated possible sources and magnitudes. (C) 2009 Elsevier Ltd. All rights reserved.
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