In Norway, the loss of soil nutrients caused by acid precipitation is hurting the trees' health.
Acid rain can displace nutrients such as calcium and magnesium from the soils.
Scientists have modeled these processes, and estimate that in forested areas in southern Sweden and Norway, acid rain may have leached out 20 to 70 per cent of the most important minerals. Sulphur dioxide in the acid smoke from the nickel refineries on the Kola Peninsula have caused burns on pine needles and the foliage of deciduous trees. For further inforomation, try Norway's Acidic Deposition. In Finland, Acidic Deposition has not been as much of a problem. There have not been any signs of general acidification damage to Finnish forests.