ROZDÍLY VE VLASTNOSTECH HORSKÝCH LESNÍCH PŮD NA KYSELÝCH A BAZICKÝCH MATEČNÍCH HORNINÁCH

Mountain forest soils in the region of the Jizera Mountains are polluted by acidification. These soils have a poor quality of humus substances, are highly acidic throughout the whole profile and the main substance bound in the soil sorption complex is aluminium. This study monitors what effect have the consequences of natural processes and human activities on properties of soils that develop close together and therefore are exposed to the same negative effects, covered by the same vegetation, but are situated on bedrocks with different properties. The study only partially confirmed the assumption that the soils developed on alkaline parent rock have better quality than the soils on acid parent rock. It can be concluded that the soils on alkaline bedrock are in most aspects of better quality. However, base components of a relatively rich substrate which would naturally appear on this bedrock are leached out. Analysis results include these soils into the group of soils with low quality threatened by acidification