Plotb | Total organic matter | humic acid | C species of humic acid | |||
Alkyl-C | O-alkyl-C | Aromatic-C | Carbonyl-C | |||
| ? g C kg−1 dried soil ? | g C kg−1 dried soil (% of humic acid) | ||||
F | 10.4 | 4.41 | 0.96 (21.7) | 0.76 (17.3) | 1.65 (37.4) | 1.04 (23.6) |
F + HC | 25.6 | 12.5 | 2.33 (18.6) | 2.34 (18.7) | 4.84 (38.7) | 3.00 (24.0) |
Plotb | fulvic acid | C species of fulvic acid | ||||
Alkyl-C | O-alkyl-C | Aromatic-C | Carbonyl-C | |||
? g C kg−1 dried soil ? | g C kg−1 dried soil (% of fulvic acid) | |||||
F | 4.22 | 0.51 (12.0) | 2.01 (47.7) | 0.56 (13.2) | 1.14 (27.1) | |
F + HC | 7.06 | 1.19 (16.9) | 3.17 (44.9) | 0.98 (13.9) | 1.71 (24.2) |