Table 2.
Physical and chemical characteristics (mean ± SE) of rhizosphere soil samples collected from Cathaya argyrophylla at different sites.
| CBE | CBY | JPL | SMP | |
|---|---|---|---|---|
| TC (g/kg) | 15.5501 ± 1.2981a | 7.8576 ± 1.2099b | 1.4251 ± 0.2033c | 10.2801 ± 0.5471b |
| TN (g/kg) | 0.7505 ± 0.0659a | 0.3937 ± 0.0595b | 0.1411 ± 0.0211c | 0.4408 ± 0.0278b |
| SOM (g/kg) | 322.6155 ± 44.2833a | 191.6626 ± 24.2836b | 21.2703 ± 3.1836c | 123.7940 ± 8.2019b |
| Humus (g/kg) | 1.1692 ± 0.2026a | 1.2210 ± 0.08a | 1.3203 ± 0.0553a | 1.6890 ± 0.4371a |
| NH₄+-N (mg/kg) | 69.4393 ± 4.6652a | 71.0789 ± 2.5455a | 15.3026 ± 2.7463c | 50.7539 ± 5.9966b |
| NO3−-N (mg/kg) | 9.8509 ± 1.0163b | 2.2948 ± 0.0913b | 40.6788 ± 11.7736a | 1.4570 ± 0.1886b |
| AN (mg/kg) | 184.4267 ± 6.7636a | 140.3150 ± 10.9473b | 40.3433 ± 6.7853d | 82.9033 ± 7.5757c |
| AP (mg/kg) | 1.1917 ± 0.0846b | 1.5000 ± 0.2742b | 1.1692 ± 0.0575b | 2.8500 ± 0.4805a |
| AK (mg/kg) | 94.3333 ± 10.8372a | 79.000 ± 10.6927ab | 47.3330 ± 21.85b | 64.3333 ± 4.8074ab |
| pH | 3.7800 ± 0.1308b | 4.0933 ± 0.026ab | 4.9233 ± 0.5801a | 4.4233 ± 0.2718ab |
Values are means ± SEs (n = 3). Means followed by different lowercase letters within rows are significantly (p < 0.05) different. TC, soil total carbon; TN, total nitrogen; SOM, soil organic matter; NH₄+-N; ammonium nitrogen; NO3−-N, nitrate nitrogen; AN, available nitrogen; AP, available phosphorus; AK, available potassium.