MODELING CLEAN RAIN TREATMENTS IN ACIDIFIED SOILS - EXMAN PROJECT RESULTS

The SAFE dynamic model was applied to a ''clean rain'' roof experiment performed within the EXMAN project. In the experiment ambient through fall was removed and replaced with artificial ''clean throughfall''. I nput of S, N and H to the forest ecosystem was reduced by 75-100%. The results of the modelling show, that the time scales of model predicti ons and experiments are the same. The change in base cation flux was w ell reproduced, while the simulation of changes in aluminum flux was l ess successful. pH stayed constant in the experiment as well as in the calculations.