Table 2. Seasonal crown density of study species for three years from 2018 to 2020
Species | Crown density(%) |
Spring (Apr.-May) | Summer (June-Aug.) | Autumn (Sept.-Oct.) | Winter (Nov.-Mar.) |
Abies holophylla | 91.3±1.8 | 92.1±1.2 | 92.3±3.8 | 91.5±0.9 |
Acer palmatum | 72.1±1.1 | 79.3±1.2 | 80.4±0.6 | 60.4±2.6 |
Ginkgo biloba | 72.6±1.9 | 91.9±2.5 | 88.5±0.4 | 50.7±6.1 |
Pinus densiflora | 74.6±1.0 | 75.7±0.8 | 74.9±0.5 | 74.0±3.2 |
Pinus koraiensis | 93.4±0.3 | 95.4±1.8 | 92.2±1.1 | 93.2±1.8 |
Prunus yedoensis | 67.6±0.7 | 72.4±2.0 | 76.5±0.5 | 56.6±2.5 |
Zelkova serrata | 81.8±0.3 | 95.6±0.2 | 93.0±0.2 | 67.3±0.7 |