Table 2. Types and contents of PLFAs in different stand ages of P. elliottii plantations (ug·g-1).
| No. | Biomarkers | Microbial group | Stand ages | |||
|---|---|---|---|---|---|---|
| 3 | 10 | 18 | 25 | |||
| 1 | 18:1ω9c | Fungi | 6.91d | 8.23c | 13.78b | 15.26a |
| 2 | 16:1ω7c | Gram(-) bacteria | 11.36a | 9.21b | 7.94c | 6.44d |
| 3 | i14:0 | Gram(+) bacteria | 3.59a | 2.88b | 2.41c | 2.38c |
| 4 | 10Me18:0 | Actinomycete | 4.66a | 3.54b | 3.45b | 3.06c |
| 5 | 16:00 | Gram(-) bacteria | 7.55a | 5.79b | 4.32c | 2.96d |
| 6 | cy19:0 | Gram(-) bacteria | 25.67a | 23.93b | 19.26c | 15.17d |
| 7 | 18:3ω6c(6,9,12) | Fungi | 9.74d | 11.43c | 14.94b | 15.85a |
| 8 | 16:1ω9c | Gram(+) bacteria | 4.09a | 2.56b | - | - |
| 9 | i18:0 | Gram(+) bacteria | 5.66a | 4.78b | 4.04c | 3.44d |
| 10 | a17:0 | Gram(+) bacteria | 3.31a | 2.79b | 2.54c | 2.46c |
| 11 | 10Me16:0 | Actinomycete | 3.93a | 3.27c | 3.44b | 3.85a |
| 12 | 18:00 | Gram(-) bacteria | 2.73a | 2.34b | 1.25c | 0.76d |
| 13 | cy17:0 | Gram(-) bacteria | 8.77a | 7.81c | 7.96b | 5.49d |
| 14 | 18:3ω3 | Fungi | 1.67d | 1.94c | 2.53b | 3.52a |
| 15 | 10Me17:0 | Actinomycete | 1.42 | - | - | - |
| 16 | i17:0 | Gram(+) bacteria | 1.93a | 1.78b | 1.59c | 1.16d |
| 17 | 20:4ω6c(6,9,12,15) | Protozoon | 0.58b | 0.74a | 0.51b | 0.83a |
| 18 | 15:0 | Gram(+) bacteria | 4.45a | 3.78b | 0.93c | 0.67d |
| 19 | - | Total PLFA | 108.02a | 96.80b | 90.89c | 83.30d |
| 20 | - | Bacteria | 79.11a | 67.65b | 52.24c | 40.93d |
| 21 | - | Gram(+) | 23.03a | 18.57b | 11.51c | 10.11d |
| 22 | - | Gram(-) | 56.08a | 49.08b | 40.73c | 30.82d |
| 23 | - | Fungi | 18.32d | 21.60c | 31.25b | 34.63a |
| 24 | - | Actinomycete | 10.01a | 6.81b | 6.89b | 6.91b |
| 25 | - | Gram (+) / Gram (-) (%) | 41.06a | 37.84b | 28.26d | 32.80c |
| 26 | - | Fungi/ Bacteria (%) (F/B) | 23.16d | 31.93c | 59.82b | 84.61a |