Table 2.
The pH indicator, conductivity (EC), chloride and cation concentrations in soils.
| Soil samples | Depth (cm) | pH | EC (µS cm−1) | Cl− | Na+ | K+ | Mg2+ | Ca2+ | |
|---|---|---|---|---|---|---|---|---|---|
| H2O | KCl | (mg 100 g−1 d. m.) | |||||||
| Roadside (n = 10) | 0–10 | 7.8–8.1 | 7.3–7.4 | 171–298 | 1.67 (0.69) | 17.9 (6.1) | 3.65 (2.11) | 0.44 (0.32) | 3.72 (0.55) |
| 10–30 | 8.0–8.5 | 7.3–7.4 | 239–419 | 1.84 (0.58) | 16.2 (2.6) | 1.85 (0.6) | 0.13 (0.18) | 3.30 (0.52) | |
| Park (n = 5) | 0–10 | 7.5–7.7 | 6.9–7.3 | 90–130 | 0.39 (0.08) | 2.36 (1.0) | 4.52 (0.85) | 1.76 (0.12) | 1.67 (0.13) |
| 10–30 | 7.6–7.8 | 6.9–7.3 | 126–198 | 0.66 (0.14) | 0.57 (0.11) | 2.42 (0.17) | 0.67 (0.03) | 4.64 (0.22) | |
| Statistical test (n = 15) | 0–10 | * | * | * | * | * | n.s | * | * |
| 10–30 | * | n.s | * | * | * | n.s | * | * | |
Values are: min–max (pH, EC), median, and IQR in parentheses (Cl, Na, K, Mg, Ca).
*p < 0.001 significant difference between roadside and park samples (Mann–Whitney U test).