Objetivo THE AIM OF THE RESEARCH IS TO QUANTIFY THE EFFECTS OF ACID DEPOSITION ON THE FOREST STANDS, THE SOILS AND THE SEEPAGE WATER. AT THE SAME TIME, THE EFFECTS OF COMPENSATIVE LIMINGS ARE INVESTIGATED ALSO WITH REGARD TO FOREST STANDS, SOILS AND SEEPAGE. THE RESEACH WORK IS BASED ON THE ASSUMPTION THAT ENHANCED PROTON INPUTS FROM THE ATMOSPHERE ARE CAUSING ESSENTIAL CHANGES IN FOREST ECOSYSTEMS, BEING RESPONSIBLE TO A HIGH DEGREE FOR THE EXTENSIVE FOREST DECLINE OF RECENT YEARS. THE RESEARCH WORK IS SUBDIVIDED INTO TWO PROJECTS OF INVESTIGATIONS: A. THE FIELD EXPERIMENTS "HOEGLWALD". IN TWO PURE SPRUCE STANDS OF DIFFERENT AGES, EXPERIMENTS WITH ARTIFICIAL RAIN AND WITH COMPENSATIVE LIMINGS ARE INSTALLED. IN OLD SPRUCE STAND (76 YEARS OLD) A SOIL IRRIGATION OF 200 MM PER YEAR WITH PH 2.7 AND PH 5 IS PERFORMED; IN THE YOUNG STAND (12 YEARS OLD) AN ABOVE-CANOPY IRRIGATION WITH THE SAME FEATURES IS APPLIED. THE LIMING COMPRISES 4000 KG HA _1 CA-MG-CARBONATE. B. SITE INVESTIGATIONS WITHOUT EXPERIMENTAL TREATMENTS. INVESTIGATIONS WITH THE SAME AIM AS MENTIONED ABOVE BUT WITHOUT THE EXTENSIVE EXPERIMENTAL TREATMENTS AS UNDER POINT A. SHOULD BE PERFORMED IN ABOUT 50 STANDS OF DIFFERENT SPECIES, SITES AND IMMISSION CHARGES. Programa(s) PRE-ENVPROT 3C - Sectoral research and development programme (EEC) in the field of environment (environmental protection and climatology) - indirect and concerted actions - Environmental protection -, 1981-1985 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador Ludwig-Maximilians-Universität München Aportación de la UE Sin datos Dirección Amalienstraße 52 80799 München Alemania Ver en el mapa Coste total Sin datos
