The Effect of SO2 and Some Other Pollutants on Forest Trees with Special Reference to Croatia

1989

S. 243-260

5 Abb., 7 Tab., 38 Lit. Ang.

Unselbständiges Werk

200015238

The first part of the paper presents the theoretical basis of the SO2 damaging effect on the forest trees. Research results show that some areas of forest ecosystems in Croatia are consiederably loaded with sulphur. Thus, in eastern Istria and the Rijeka region, raised SO2 concentratins in the atmosphere remain in the sulphur content of the assimilating organs of the investigated tree species. Considerable damage of forest vegetation was determined in this area, grater than in areas the sulphur load is lower. Many investigations carried out in Croatia have determined the presence of imissional acidification and accumulation of heavy metals in forest soils. Lead content and other heavy metals increase with the altitude. The first evidence of the unfavourable influence of pollution and disorders in the nutrition of Norway Spruce, Silver Fir and Pedunculate Oak have been obtained.