Modelling the responses of mature forest trees to air pollution |
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| Authors: | Heiner Schäfer Dr Hartmut Bossel Holger Krieger Norbert Trost |
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| Institution: | 1. Environmental Systems Analysis Group, University of Kassel, M?nchebergstr. 21A, D-3500, Kassel, FR Germany
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| Abstract: | Systems analysis of the responses of forest trees to air pollutants led to mathematical models which represent the essential
life processes of mature trees (photosynthesis, respiration, growth etc.) under ‘normal’ conditions and — especially — under
pollution strees. Computer simulations using these models have made it possible to test and analyse the consequences of —
known or hypothetical — pollution effects. The simulation runs have led to the identification of three distinct behavioural
modes (growth, stagnation, breakdown) and corresponding stable and unstable system states. The results have produced new insights
and contributed to the understanding of the dieback process of spruce and beech trees. The presentation will concentrate on
the most recent and most complex of the hitherto existing models, theBeech model. |
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