Table 3 The proportions of carbon stock densities of planted and natural Pinus massoniana forests in Hunan Province, China
From: Carbon stock density in planted versus natural Pinus massoniana forests in sub-tropical China
Component | Young forest | Middle-aged forest | Mature forest | |||
|---|---|---|---|---|---|---|
Planted(%) | Natural(%) | Planted(%) | Natural(%) | Planted(%) | Natural(%) | |
Tree | 17.74 ± 2.66 | 10.90 ± 1.70 | 42.65 ± 6.54 | 33.35 ± 3.80 | 64.70 ± 3.08** | 41.12 ± 3.89 |
Shrub | 0.64 ± 0.20 | 1.67 ± 0.63 | 1.17 ± 0.48 | 1.51 ± 0.31 | 0.43 ± 0.09* | 1.14 ± 0.21 |
Herb | 1.93 ± 0.87 | 3.26 ± 0.96 | 0.90 ± 0.16 | 0.76 ± 0.14 | 0.76 ± 0.29 | 1.34 ± 0.29 |
Debris | 2.35 ± 0.46 | 3.11 ± 0.92 | 1.94 ± 0.31 | 2.62 ± 0.37 | 1.34 ± 0.17 | 2.47 ± 0.43 |
Soil | 77.50 ± 2.47 | 81.06 ± 2.06 | 53.34 ± 6.07 | 61.75 ± 4.00 | 32.77 ± 3.22** | 53.93 ± 3.39 |