Table 2. Concentration (nmol g-1 soil) and relative abundance (%) of selected phospholipid fatty acid (PLFA) groups in fresh organic matter (FOM) treated soils on 0 d, 20 d, and 105 d of the incubation.
| Larch Plantation soil |
Secondary Forest soil |
||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total PLFAs | G+ | G- | Bacteria | Fungi | Actinomycetes | Total PLFAs | G+ | G- | Bacteria | Fungi | Actinomycetes | ||||||||||||
| PLFA concentration (nmol g-1 soil) | |||||||||||||||||||||||
| Initial | 74.76 | 25.17 | 15.38 | 42.47 | 13.74 | 7.74 | 104.00 | 32.50 | 22.78 | 57.72 | 19.81 | 9.98 | |||||||||||
| 20d | |||||||||||||||||||||||
| Control | 63.61c | 21.04c | 13.06c | 35.69c | 11.67c | 6.34c | 94.10c | 30.34c | 20.63c | 52.99c | 17.23c | 9.02c | |||||||||||
| +leaves | 119.19a | 40.69a | 24.37a | 68.35a | 22.95a | 10.49a | 181.30a | 60.45a | 37.06a | 102.14a | 36.27a | 14.43a | |||||||||||
| +stalks | 101.26b | 34.32b | 21.91b | 58.91b | 19.53b | 8.61b | 161.35b | 54.30b | 33.51b | 92.04b | 31.84b | 12.26b | |||||||||||
| 105d | |||||||||||||||||||||||
| Control | 67.14b | 22.87b | 13.40b | 38.14b | 11.38b | 7.02b | 96.35b | 32.68b | 18.94b | 54.02b | 16.34b | 10.04b | |||||||||||
| +leaves | 102.52a | 37.55a | 19.39a | 60.28a | 18.60a | 8.74a | 141.05a | 50.18a | 27.41a | 81.53a | 25.34a | 11.85a | |||||||||||
| +stalks | 104.95a | 37.22a | 20.72a | 61.22a | 19.15a | 9.57a | 147.67a | 51.75a | 28.68a | 84.37a | 26.60a | 13.01a | |||||||||||
| PLFA relative abundance (%) | |||||||||||||||||||||||
| Initial | — | 33.65 | 20.58 | 56.80 | 18.39 | 10.34 | — | 31.26 | 21.92 | 55.52 | 19.05 | 9.59 | |||||||||||
| 20d | |||||||||||||||||||||||
| Control | — | 33.07a | 20.54a | 56.11b | 18.35b | 9.97a | — | 32.26b | 21.93a | 56.34a | 18.30b | 9.59a | |||||||||||
| +leaves | — | 34.15a | 20.44a | 57.34a | 19.25a | 8.80b | — | 33.34a | 20.44b | 56.34a | 20.00a | 7.96b | |||||||||||
| +stalks | — | 33.90a | 21.64a | 58.18a | 19.29a | 8.50b | — | 33.66a | 20.77b | 57.05a | 19.73a | 7.60b | |||||||||||
| 105d | |||||||||||||||||||||||
| Control | — | 34.06b | 19.94a | 56.79b | 16.97b | 10.46a | — | 33.92c | 19.65a | 56.07c | 16.96b | 10.42a | |||||||||||
| +leaves | — | 36.64a | 18.92b | 58.81a | 18.14a | 8.52b | — | 35.58a | 19.44a | 57.82a | 19.97a | 8.39b | |||||||||||
| +stalks | — | 35.46a | 19.75a | 58.33a | 18.26a | 9.11b | — | 35.04b | 19.42a | 57.14b | 18.01a | 8.81b | |||||||||||
Letters in the same column for each sampling time denote significant differences (p < 0.05) between FOM treatments (n = 4). -, not available.