Table 10 Bivariate correlation between soil physicochemical parameters and species abundance within and around tree canopy
Correlations (Pearson’s) | ||||
|---|---|---|---|---|
|  | Spa-UC (0–0.5 m) | Spa-UC (0.5–1.0 m) | Spa-UC (1.0–1.5 m) | Spa-OC |
pH (OC) | − 0.486 | 0.315 | − 0.422 | − 0.176 |
Electric conductivity (OC) | 0.466 | 0.325 | 0.807 | 0.402 |
Total org. carbon (OC) | 0.249 | − 0.379 | − 0.658 | − 0.880* |
Total nitrogen (OC) | − 0.134 | − 0.551 | 0.402 | 0.202 |
Potassium (OC) | − 0.431 | 0.088 | − 0.468 | 0.117 |
Calcium (OC) | − 0.043 | 0.416 | 0.790 | 0.933* |
Magnesium (OC) | − 0.254 | 0.549 | − 0.128 | 0.507 |
Soluble phosphates (OC) | − 0.015 | − 0.458 | − 0.591 | − 0.906* |
Sulphates (OC) | − 0.259 | 0.315 | 0.675 | 0.856 |
pH (UC) | 0.454 | − 0.572 | − 0.330 | − 0.675 |
Electric conductivity (UC) | − 0.405 | 0.640 | 0.047 | 0.393 |
Total org. carbon (UC) | − 0.174 | 0.482 | 0.710 | 0.916* |
Total nitrogen (UC) | 0.045 | − 0.404 | − 0.568 | − 0.400 |
Potassium (UC) | 0.534 | 0.154 | − 0.484 | − 0.391 |
Calcium (UC) | − 0.340 | 0.457 | 0.520 | 0.857 |
Magnesium (UC) | − 0.852 | 0.101 | − 0.49 | − 0.052 |
Soluble phosphates (UC) | − 0.557 | 0.188 | 0.236 | 0.262 |
Sulphates (UC) | − 0.078 | 0.521 | 0.800 | 0.884* |