Table 2. Mean values of selected physical and chemical properties of soil in samples associated with the trees of different damage classes.
| Tree vitality according to Roloff’s classification | Spearman correlation | |||||
|---|---|---|---|---|---|---|
| R0 | R1 | R2 | R3 | # of root tips | VM | |
| pHH2O | 6.9b | 7.6a | 7.8a | 7.9a | -0.55 | -0.45 |
| Na (mg/l) | 27.1b | 132.3a | 352.3a | 290.0a | -0.6 | -0.49 |
| Cl (mg/l) | 20.0b | 34.5a | 95.2a | 56.4a | -0.55 | -0.43 |
| Pb (mg/kg) | 55.9b | 115.2a | 145.6a | 129.0a | -0.35 | -0.48 |
| Ca (mg/l) | 1220.3b | 1736.7ab | 1523.6ab | 1853.7a | -0.34 | |
| Fe (mg/l) | 96.3a | 63.0b | 62.6ab | 58.9b | ||
| N-NO3 (mg/l) | 29.4 | 23.2 | 22.9 | 22.3 | 0.45 | |
| C-org (%) | 2.8 | 2.6 | 2.9 | 2.5 | ||
| Cr (mg/kg) | 17.0 | 24.3 | 51.6 | 37.2 | ||
| Cu (mg/l) | 7.0 | 9.3 | 11.5 | 13.7 | -0.40 | -0.45 |
| Zn (mg/l) | 27.1 | 37.2 | 43.5 | 32.1 | -0.35 | |
| K (mg/l) | 151.1 | 153.8 | 115.3 | 100.0 | 0.4 | |
| Mg (mg/l) | 122.7 | 130.7 | 99.4 | 104.4 | ||
| N-NH4 (mg/l) | 11.3 | 11.0 | 10.0 | 6.9 | 0.32 | |
| P (mg/l) | 67.9 | 53.0 | 53.9 | 39.9 | ||
| Mn (mg/l) | 2.0 | 2.2 | 2.6 | 2.7 | ||
The soil features significantly different, at p-value<0.05, among the tree groups are in bold. Different letters indicate significant differences. Significant, at p-value<0.05.