Table 2.
Pearson correlation analysis of the content of secondary metabolites with soil physicochemical properties
| GIA | GTF | LI | |
|---|---|---|---|
| SOM | 0.317 | 0.172 | 0.274 |
| STN | 0.243 | 0.071 | 0.202 |
| STP | 0.248 | 0.101 | 0.205 |
| STK | −0.156 | 0.033 | −0.251 |
| SNN | −0.270 | −0.625** | − 0.171 |
| SAN | 0.472* | 0.562** | 0.438* |
| SAP | 0.347 | −0.023 | 0.440* |
| SAK | −0.160 | 0.101 | −0.246 |
| TS | −0.525** | −0.716** | − 0.383* |
| PH | −0.075 | − 0.218 | −0.048 |
| SWC | −0.311 | −0.092 | − 0.381 |
Description: the values are the Pearson correlation coefficients. The correlation coefficient r of Pearson is between −1 and 1, r < 0 is negative correlation, r > 0 is positive correlation. ** means P < 0.01; * means P < 0.05