Table 3 The content of humic fractions in WDC and AC
Fraction | Horizon | % Soil organic carbon | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Humic acids | Fulvic acids | |||||||||
HA1 | HA2 | HA3 | ΣHA | FA1a | FA1 | FA2 | FA3 | ΣFA | ||
WDC | Ag | 0.76 | 0 | 0.13 | 0.89 | 0.18 | 0.48 | 0.13 | 0.12 | 0.91 |
Elcg | 4.04 | 1.94 | 2.02 | 8.00 | 3.16 | 3.08 | 2.79 | 0.64 | 9.67 | |
Btg1 | 2.01 | 0 | 1.46 | 3.47 | 1.09 | 2.29 | 0.76 | 0.13 | 4.27 | |
AC | Ag | 19.90 | 0 | 6.03 | 25.93 | 3.34 | 9.30 | 1.86 | 5.06 | 19.56 |
Elcg | 11.75 | 0 | 6.12 | 17.87 | 8.92 | 6.32 | 10.67 | 0.12 | 26.03 | |
Btg1 | 17.87 | 0 | 6.92 | 24.79 | 10.13 | 1.33 | 10.82 | 0 | 22.28 | |