Table 7. Area of thoracic cross-section by type of community of Geumgang Pine (Pinus densiflora) forest in Sogwang-ri, Uljin (Unit: 400m2)
| Name of species | Type Ⅰ | Type Ⅱ | Type Ⅲ |
| Tree layer (cm2) | Subtree layer (cm2) | Total (cm2) | Tree layer (cm2) | Subtree layer (cm2) | Total (cm2) | Tree layer (cm2) | Subtree layer (cm2) | Total (cm2) |
| P. densiflora | 25,424.4 | 585.1 | 26,009.5 | 12,642.1 | - | 12,642.1 | 14,183.0 | 1,781.8 | 15,964.8 |
| Q. variabilis | - | - | - | - | - | - | - | - | - |
| B. davurica | - | - | - | - | - | - | - | 2.4 | 2.4 |
| C. laxiflora | - | - | - | - | - | - | - | 13.6 | 13.6 |
| Q. mongolica | - | 104.7 | 104.7 | - | - | - | - | 2.4 | 2.4 |
| Q. serrata | - | - | - | - | 22.5 | 22.5 | - | - | - |
| C. crenata | - | - | - | - | 46.0 | 46.0 | - | - | - |
| B. costata | - | - | - | - | 4.2 | 4.2 | - | - | - |
| U. davidiana | - | - | - | - | - | - | - | - | - |
| C. controversa | - | - | - | - | - | - | - | - | - |
| T. amurensis | - | - | - | - | - | - | - | - | - |
| F. rhynchophylla | - | - | - | - | - | - | - | - | - |
| A. pseudosieboldianum | - | - | - | - | - | - | - | 130.6 | 130.6 |
| Others | - | - | - | - | - | - | - | - | - |
| Total | 25,424.4 | 689.8 | 26,114.1 | 12,642.1 | 72.7 | 12,714.9 | 14,183.0 | 1,930.7 | 16,113.7 |
| Name of species | Type Ⅳ | Type Ⅴ | Type Ⅵ |
| Tree layer (cm2) | Subtree layer (cm2) | Total (cm2) | Tree layer (cm2) | Subtree layer (cm2) | Total (cm2) | Tree layer (cm2) | Subtree layer (cm2) | Total (cm2) |
| P. densiflora | 15,044.3 | - | 15,044.3 | 22,258.7 | 6.5 | 22,265.2 | 11,434.4 | 98.1 | 11,532.5 |
| Q. variabilis | - | - | - | - | - | - | 173.1 | 52.0 | 225.1 |
| B. davurica | - | - | - | - | - | - | - | - | - |
| C. laxiflora | - | - | - | - | 10.0 | 10.0 | - | - | - |
| Q. mongolica | - | - | - | - | - | - | 775.0 | 107.8 | 882.7 |
| Q. serrata | - | - | - | - | 4.2 | 4.2 | 1,398.7 | - | 1,398.7 |
| C. crenata | - | - | - | - | - | - | - | - | - |
| B. costata | - | - | - | - | - | - | - | - | - |
| U. davidiana | - | - | - | - | - | - | - | 224.3 | 224.3 |
| C. controversa | - | - | - | - | - | - | 471.2 | 58.1 | 529.3 |
| T. amurensis | - | - | - | - | - | - | 298.5 | 128.4 | 426.9 |
| F. rhynchophylla | - | - | - | - | 1.0 | 1.0 | - | 525.6 | 525.6 |
| A. pseudosieboldianum | - | 1.8 | 1.8 | - | - | - | - | 262.4 | 262.4 |
| Others | - | - | - | - | - | - | 122.7 | 499.9 | 622.6 |
| Total | 15,044.3 | 1.8 | 15,046.1 | 22,258.7 | 21.7 | 22,280.4 | 14,673.5 | 1,956.5 | 16,630.0 |