CHANGES IN THE CONTENT OF BIOAVAILABLE HEAVY METAL COMPOUNDS IN THE SOILS OF THE CRIMEAN MOUNTAIN PLATEAUS AFTER AFFORESTATION

About 3 thousand hectares of forest stands were created on the surface Crimean mountain plateaus in middle 20th century as a result afforestation. Studies influence these properties meadow soils (Phaeozems) showed that under vegetation, consolidation structural aggregates, decrease humus content, and an increase acidity compared to which could also affect other soil properties, including mobility some metals, observed. The work objective this research is conduct comparative analysis content Pb, Mn, Cu, Zn compounds available for biota (1 M ammonium acetate) meadows, natural beech forest, artificial stands. Following obtained results, Cu accumulated afforested relative adjacent meadows areas. Thus, average Pb layer 0–10 cm pine comparison with vegetation was 1.6 times higher, Mn – 1.2 times, times. 2.5 1.5 higher silver birch 2.2 2.4 Siberian larch 1.9 1.1 1.3 sycamore maple stands, meadow. Differences between elements most cases significant, except signs accumulation not revealed. brown lessive (Luvisols) oriental corresponded their concentration larch, significantly all species. main reason tree transition from immobile forms increased soils. Wood litter due low trace its composition cannot be source topsoil.