Table 1. Temporal changes in vegetation composition for major species observed in the study sites before (2022) and after harvesting. The importance value (IV) was calculated as the averaging of relative density (RD) and relative coverage (RC).
| Site | Species | IV | RD | RC |
| 2022 | 2023 | 2024 | 2022 | 2023 | 2024 | 2022 | 2023 | 2024 |
| Hongcheon | Pinus koraiensis | 80.6 | 68.5 | 67.9 | 74.7 | 48.2 | 47.3 | 86.5 | 88.7 | 88.5 |
| Larix kaempferi | 24.2 | 41.6 | 37.1 | 15.8 | 19.8 | 14.7 | 32.6 | 63.4 | 59.4 |
| Quercus mongolica | 23.3 | 100.0 | 74.4 | 24.3 | 100.0 | 50.0 | 22.2 | 100.0 | 2.7 |
| Lindera obtusiloba | - | 25.1 | 26.2 | - | 48.1 | 49.7 | - | 2.1 | 98.7 |
| Quercus variabilis | 17.3 | 41.7 | 16.4 | 17.2 | 23.1 | 18.6 | 17.4 | 60.4 | 22.0 |
| Chungju | Quercus variabilis | 42.6 | 45.7 | 56.5 | 38.1 | 30.7 | 43.0 | 47.2 | 60.7 | 70.1 |
| Quercus aliena | 17.5 | 27.6 | 24.2 | 17.9 | 37.0 | 32.3 | 17.1 | 18.2 | 16.1 |
| Quercus acutissima | 24.5 | 10.3 | 25.2 | 21.5 | 8.0 | 15.6 | 27.5 | 12.6 | 34.8 |
| Castanea creanta | 13.4 | 11.3 | 7.8 | 10.5 | 8.0 | 6.7 | 16.3 | 14.7 | 8.8 |
| Zelkova serrata | 7.0 | 14.1 | 15.6 | 11.9 | 25.0 | 26.7 | 1.9 | 3.2 | 4.6 |