Origin of oak stands | Age groups (years) | ||||
---|---|---|---|---|---|
≤ 40 | 41–80 | 81–120 | ≥ 121 | Total | |
Vegetative | |||||
Natural seed | |||||
Planted seed | |||||
Total |
Sample plot number | Total (thousand stems ha−1) | Including variation of natural oak regeneration by age groups (numerator – thousand stems ha−1, denominator – proportion of total number, %) | Abundance (%) | |||
---|---|---|---|---|---|---|
young seedling (up to 1 year) | 2–3 years | 4–8 years | 9–15 years | |||
60–100 year-old stands | ||||||
1–6 | 1.0–2.6 | 40–50 | ||||
110–150 year-old stands | ||||||
7–10 | 2.8–10.3 | 45–80 | ||||
160–200 year-old stands | ||||||
11–15 | 3.0–11.0 | 60–85 |
Origin of oak stands | As of 2001 | As of 2016 | Changes | |||
---|---|---|---|---|---|---|
Area (thousand ha) | Volume (million m3) | Area (thousand ha) | Volume (million m3) | Area (thousand ha) | Volume (million m3) | |
Vegetative | 173 | 43.6 | 163 | 43.5 | −10 | −0.1 |
Natural seed | 18 | 4.8 | 20 | 5.7 | +2 | +0.9 |
Planted seed | 100 | 17.7 | 101 | 21.5 | +1 | +3.7 |
Total oak stands | 291 | 66.1 | 284 | 70.7 | −7 | +4.5 |
Sample plot number | Characteristic of oak stands | The number of natural reproduction including pedunculate oak | ||||
---|---|---|---|---|---|---|
Stand composition | Age (years) | Relative density of stocking | Total | Thousand stems ha−1 | % | |
60–100 year-old stands | ||||||
1 | Oak 90%–Ash 10% | 64 | 0.75 | 9.1 | 1.9 | 20.9 |
2 | Oak 80%–Ash 20% | 70 | 0.60 | 14.8 | 2.3 | 15.5 |
3 | Oak 80%– Lime 10%– N-Maple 10% | 83 | 0.88 | 11.1 | 2.6 | 23.4 |
4 | Oak 60%–N-Maple 20%– Lime 10%–Ash 10% | 84 | 0.61 | 25.9 | 1.4 | 5.4 |
5 | Oak 60%–Lime 30%–Ash 10% | 94 | 0.86 | 5.9 | 1.0 | 16.9 |
6 | Oak 60%–Lime 20%–Ash 10%–N-Maple 10% | 100 | 0.66 | 20.1 | – | – |
110–150 year-old stands | ||||||
7 | Oak 70%–Ash 20%– Lime 10% | 109 | 0.63 | 16.0 | 4.0 | 25.0 |
8 | Oak 60%– Lime 20%– N-Maple 20% | 119 | 0.62 | 13.1 | 2.8 | 21.4 |
9 | Oak 60%–Lime 20%–Ash 10%–N-Maple 10% | 134 | 0.86 | 16.0 | 2.8 | 17.5 |
10 | Oak 90%–Ash 10% | 144 | 0.72 | 17.4 | 10.3 | 59.2 |
160–200 year-old stands | ||||||
11 | Oak 70%–Ash 20%– N-Maple 10% | 158 | 0.60 | 34.7 | 5.3 | 15.3 |
12 | Oak 70%–Ash 10%–Lime 10%–N-Maple 10% | 158 | 0.62 | 30.0 | 11.0 | 36.7 |
13 | Oak 30%–Ash 30%–Lime 20%–N-Maple 20% | 178 | 0.70 | 15.5 | 3.0 | 19.4 |
14 | Oak 100% | 188 | 0.66 | 25.0 | 8.0 | 32.0 |
15 | Oak 100% | 193 | 0.69 | 26.8 | 10.8 | 40.3 |