Carbon components | Fallow category | Old-growth forest | P value | ||||
---|---|---|---|---|---|---|---|
≤ 5 years old | 6–10 years old | 11–15 years old | 16–20 years old | 20–25 years old | |||
LWAGBC | 1.41 (0.24)a | 3.13 (0.88)a | 6.06 (0.89)a | 16.94 (0.54)b | 30.32 (0.69)c | 146.15 (6.36)d | 0.001 |
LWBGBC | 0.34 (0.06)a | 0.75 (0.21)a | 1.46 (0.21)a | 4.07 (0.13)b | 7.28 (0.17)c | 35.08 (1.53)d | 0.001 |
LNWAGBC | 4.08 (0.13)a | 3.23 (0.12)b | 2.41 (0.17)c | 1.68 (0.08)d | 1.33 (0.13)e | 0.92 (0.06)f | 0.001 |
LNWBGBC | 0.80 (0.02)a | 0.66 (0.02)b | 0.52 (0.03)c | 0.34 (0.02)d | 0.28 (0.03)e | 0.18 (0.02)f | 0.001 |
CDBC | 0.46 (0.07)a | 0.41 (0.01)a | 0.32 (0.03)a | 0.23 (0.05)a | 0.12 (0.02)a | 2.70 (0.86)b | 0.001 |
LBC | 0.04 (0.01)a | 0.12 (0.03)a | 0.26 (0.02)a | 0.53 (0.06)b | 0.79 (0.08)c | 2.91 (0.19)d | 0.001 |
SOC | 14.91 (4.34)a | 21.96 (0.35)a | 25.70 (0.82)b | 31.60 (0.88)b | 48.38 (4.28)c | 77.69 (5.30)d | 0.001 |
TAGC | 6.00 (0.42)a | 6.90 (0.77)a | 9.06 (0.85)a | 19.38 (0.48)b | 32.55 (0.86)c | 152.68 (6.60)d | 0.001 |
TBGC | 16.04 (4.27)a | 23.37 (0.54)a | 27.67 (0.99)b | 36.00 (0.97)c | 55.93 (4.15)d | 112.94 (4.53)e | 0.001 |
TEC | 22.04 (3.85)a | 30.26 (1.30)a | 36.73 (1.80)b | 55.39 (1.36)c | 88.48 (3.70)d | 265.63 (5.82)e | 0.001 |