Szukana fraza: [Abstract = The present work summarises the results of many years' work \(1988\-2001\) on the enzymatic activity of the anthropogenic soil originating from sandy formations on the outer dumping ground of a sulphur mine covered by forest in Piaseczno at Tarnobrzeg. The significant and favourable changes of the biochemical and chemical soil properties observed over several years pointed to the stability of the silvo\-ecosystem studied and achieved as a result of the land reclamation process.]