1. The investigated parameters of the soil samples Rough sand ( 2,0 - 0,2 mm) Fine sand ( 0,2 –0,02 mm ) Dust ( 0,02 – 0,002 mm ) Colloid clay ( sub 0,002 mm ) Physical clay ( sub 0,01 mm ) pH in water Carbonate ( CaCO 3 ) Humus Phosphorus mobile ( P mobile ) recalc pH Potassium mobile (K mobile ) Zinc Copper Manganese Nickel Cadmium Iron Lead Physical-chemical parameters Biochemical parameters Microbiological parameters E1Phosphatase E2β-glucosidase E3Cellobiohydrolase E4 β-xylosidase E5Trypsin-like protease E6Chymotrypsin-like protease E7Palmitoyl-esterase E8Chitinase 1.Species richness of bacteria 2. Species richness of fungi 3. Diversity of important bacterial genera 4. Diversity of toxinogenic fungi

2. Physical-chemical parameters (processed with Excel and OpenStat softwares) pH

3. Physical-chemical parameters Humus

4. Physical-chemical parameters Phosphorus In the Romanian soils the amount of P is frequently much less in the lower layer than in the upper layer.

5. Physical-chemical parameters Potassium In the Romanian soils the amount of K is frequently much less in the lower layer than in the upper layer.

6. Physical-chemical parameters Cadmium

7. Physical-chemical parameters Copper

8. Physical-chemical parameters Zinc

9. Physical-chemical parameters Lead

10. Physical-chemical parameters Manganese

11. Physical-chemical parameters Iron

12. P-mobile – K-mobile regression in the Romanian soil samples X versus Y Plot X = VAR1, Y = VAR2 from file: Temporary.TEX Variable Mean Variance Std.Dev. VAR1 58.88 2031.53 45.07 VAR2 262.85 45963.82 214.39 Correlation = 0.5739, Slope = 2.73, Intercept = 102.10 Standard Error of Estimate = 175.57 Number of good cases = 20

13. P-mobile – K-mobile regression in the Romanian soil samples X versus Y Plot X = VAR1, Y = VAR2 from file: Temporary.TEX Variable Mean Variance Std.Dev. VAR1 58.88 2031.53 45.07 VAR2 262.85 45963.82 214.39 Correlation = 0.5739, Slope = 2.73, Intercept = 102.10 Standard Error of Estimate = 175.57 Number of good cases = 20

14. Multiple regression of heavy metals in the Romanian samples Variables Cu Mn Ni Cd Pb Zn Cu 1.000 -0.311 0.031 0.411 0.453 0.488 Mn -0.311 1.000 0.225 0.371 0.099 -0.279 Ni 0.031 0.225 1.000 0.301 0.359 0.235 Cd 0.411 0.371 0.301 1.000 0.674 0.163 Pb 0.453 0.099 0.359 0.674 1.000 0.259 Zn 0.488 -0.279 0.235 0.163 0.259 1.000 Correlation matrix

15. Multiple regression of heavy metals in the Romanian samples