Objectif The aim of the project is to gain insight into weathering processes and rates in a number of noncalcareous, coarse textured forest soils on different parent materials and of different mineralogy and ages in a transect from Sweden over Denmark to the Netherlands. The main purposes of the work to be carried out are: to estimate mineral composition of the soils to identify processes which have taken place and are taking place in the soils; to estimate historical weathering; to determine relative weathering rates of various mineral assemblages and, by means of weathering models, to estimate real time weathering rates; and to apply this information in acidification models to show impact of various deposition scenarios to the soils (estimation of acid neutralization capacity, critical acid load, vulnerability). The investigation over 3 years comprises 3 sites in each of the 3 participating countries. The results obtained on mineralogical composition, texture (surface area), and cation contents will be used in current weathering models and the resulting rates compared with rates obtained by the historical and the accelerated weathering studies. The resulting weathering data together with data on exchangeable cations and soil solution composition will be used in soil acidification models to evaluate the impact of various deposition scenarios to the soils. Thereby guidelines for long term protection, management, and restoration of soils in northern Europe, similar to those investigated, may be estimated. The Swedish and Dutch groups will do weathering and acidification modelling. Champ scientifique natural sciencesbiological sciencesecologyecosystemsnatural sciencesearth and related environmental sciencesgeologymineralogy Programme(s) FP2-STEP - Two specific research and technological development programmes (EEC) in the field of the environment STEP/EPOCH - STEP -, 1989-1992 Thème(s) Data not available Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur Den Kongelige Veterinær- og Landbohøjskole Contribution de l’UE Aucune donnée Adresse 40,Thorvaldsensvej 1871 Frederiksberg C Danemark Voir sur la carte Coût total Aucune donnée Participants (2) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire THE SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES Suède Contribution de l’UE Aucune donnée Adresse 8,Arrheniusplan 8 750 07 Uppsala Voir sur la carte Coût total Aucune donnée Winand Staring Centre of Integrated Land, Soil and Water Research Pays-Bas Contribution de l’UE Aucune donnée Adresse 125,Marijkeweg 6700 AC Wageningen Voir sur la carte Coût total Aucune donnée