TABLE 2.
Correlation analysis between microbial functional gene and soil geochemical variables, plant, and distance by partial Mantel testa
| Fertilization |
Soil |
Plant |
Distance |
|||||
|---|---|---|---|---|---|---|---|---|
| rM | P | rM | P | rM | P | rM | P | |
| All functional genes | 0.138 | 0.010 | 0.198 | 0.003 | 0.181 | 0.001 | 0.165 | 0.001 |
| Functional groups | ||||||||
| C degradation | 0.119 | 0.011 | 0.200 | 0.002 | 0.163 | 0.001 | 0.153 | 0.002 |
| C fixation | 0.158 | 0.003 | 0.250 | 0.002 | 0.201 | 0.001 | 0.208 | 0.001 |
| Assimilatory N reduction | 0.043 | 0.172 | 0.098 | 0.071 | 0.043 | 0.17 | 0.0502 | 0.066 |
| Dissimilatory N reduction | 0.090 | 0.045 | 0.145 | 0.016 | 0.165 | 0.002 | 0.108 | 0.001 |
| Nitrification | 0.015 | 0.362 | 0.045 | 0.275 | 0.100 | 0.027 | 0.067 | 0.048 |
| Denitrification | 0.088 | 0.049 | 0.111 | 0.051 | 0.169 | 0.002 | 0.124 | 0.001 |
| N fixation | 0.156 | 0.004 | 0.202 | 0.006 | 0.185 | 0.001 | 0.174 | 0.001 |
| Phosphorus | 0.115 | 0.029 | 0.119 | 0.042 | 0.141 | 0.004 | 0.145 | 0.003 |
| Sulfur | 0.166 | 0.003 | 0.232 | 0.002 | 0.189 | 0.001 | 0.199 | 0.001 |
The significant values (P ≤ 0.05) are indicated in boldface.