Table 4.
Soil heavy metal concentrations in relation to soil fertility parameters.
| CEC | Avail. P | OM | Cr | Ni | Cu | Zn | As | Hg | Cd | Pb | P | Fe | Al | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CEC | 1.00 | |||||||||||||
| Avail. P | 0.06 | 1.00 | ||||||||||||
| OM | 0.16 | 0.03** | 1.00 | |||||||||||
| Cr | 0.44** | 0.11 | 0.04 | 1.00 | ||||||||||
| Ni | 0.57** | 0.15 | 0.08 | 0.87** | 1.00 | |||||||||
| Cu | 0.54** | 0.02 | 0.00 | 0.65** | 0.81** | 1.00 | ||||||||
| Zn | 0.60** | 0.12 | 0.12 | 0.65** | 0.74** | 0.71** | 1.00 | |||||||
| As | 0.55** | 0.05 | 0.08 | 0.48** | 0.62** | 0.63** | 0.58** | 1.00 | ||||||
| Hg | 0.12 | 0.03 | 0.08 | −0.03 | 0.05 | 0.15 | 0.35** | 0.17 | 1.00 | |||||
| Cd | 0.43** | 0.17 | 0.24* | 0.11 | 0.32** | 0.44** | 0.49** | 0.59** | 0.13 | 1.00 | ||||
| Pb | 0.55** | 0.14 | 0.11 | 0.54** | 0.77** | 0.80** | 0.65** | 0.710** | 0.29** | 0.56** | 1.00 | |||
| P | 0.15 | −0.02 | 0.05 | −0.08 | −0.02 | 0.18 | 0.15 | 0.38** | 0.22* | 0.40** | 0.33** | 1.00 | ||
| Fe | 0.67** | 0.15 | 0.11 | 0.60** | 0.84** | 0.81** | 0.74** | 0.75** | 0.07 | 0.59** | 0.83** | 0.21 | 1.00 | |
| Al | 0.62** | 0.10 | 0.11 | 0.47** | 0.73** | 0.76** | 0.66** | 0.76** | 0.10 | 0.63** | 0.81** | 0.30** | 0.96** | 1.00 |
*, **
correlation is significant at the 0.05 and 0.01 levels, respectively (2-tailed).