Table 2. Soil organic C chemical compositions of different leaf litter input treatments after 14 months in a Pinus massoniana plantation in subtropical China (means with SE in brackets).
| Soil organic C chemical composition | P. massoniana | C. lanceolata | C.hystrix | E. fordii |
|---|---|---|---|---|
| Proportion of alkyl C (%) | 25.0 (0.2) a | 24.4 (0.3) a | 23.1 (1.6) a | 26.2 (1.0) a |
| Proportion of O-alkyl C (%) | 41.7 (1.2) a | 40.6 (1.4) a | 40.3 (1.7) a | 42.1 (2.7) a |
| Proportion of aromatic C (%) | 23.9 (0.2) a | 24.4 (0.9) a | 26.0 (2.0) a | 23.1 (1.2) a |
| Proportion of carbonyl C (%) | 9.4 (1.3) a | 10.5 (0.9) a | 10.5 (1.5) a | 8.5 (1.1) a |
| Alkyl/O-alkyl C | 0.60 (0.01) a | 0.60 (0.03) a | 0.57 (0.02) a | 0.63 (0.07) a |
Different lowercase letters indicate significant differences among different tree species at p < 0.05 (n = 3).