Luftschadstoffmonitoring in österreichischen Waldgebieten : Belastungssituation, Entwicklungstendenzen

Wien

1988

6 Abb., 2 Tab., 14 Lit. Ang.

SonderdruckUnselbständiges Werk

15199; 8721S

200083292

Air pollutants are known to be an important cofactor in connection with forest decline. For the evaluation of the stress situation in a damaged area, it is necessary to measure the concentrations of the most important trace gases as SO2, NOx, O3 and dust at "wood-specific" stations in representative wood areas over long periods. Furthermore, meteorologic parameters (as temperature, wind direction, wind speed, radiation, pressure and moisture) must be determined, e.g. for the interpretation of plant physiological effects. Different ways of measuring methods (integrating and registrating methods) and data evaluation are discussed. The investigation of selected forest areas (Zillertal and Achenkirch/Tyrol, Schoeneben und Wurzeralm/Uppr Austria, Ostrong/Lower Austria, Gleinalm/Styria) showed that the measured components of air pollutants cannot always be considered as the trigger factors of wood damage. Otherwise in unpolluted areas (rural areas) at a sea level > 1000 m NN ozone occurs in toxic concentrations. For the future investigations, both the completion of air pollution monitoring and increased plant physiological measurements are proposed. Furthermore, it is necessary to measure ozone-precursors, e.g. (halogen-carbohydrates, radicales, organic acides, hydronium peroxide. Monitoring over long periods should lead to legislative and other proceedings.