Table 2.
Stand variables in each stand: basal area per hectare (G/ha), diameter corresponding to mean basal area of a stand (dg), stand density index (SDI) and crown competition factor (CCF).
| Stands |
||||||||
|---|---|---|---|---|---|---|---|---|
| Mature thinned | Mature un-thinned | Premature thinned | Premature un-thinned | Pole stage thinned A | Pole stage un-thinned A | Pole stage thinned B | Pole stage un-thinned B | |
| Area (ha) | 3.05 | 2.93 | 1.72 | 1.24 | 0.48 | 0.15 | 0.30 | 0.13 |
| Trees/ha | ||||||||
| Norway spruce | 163 | 226 | 315 | 466 | 617 | 1888 | 774 | 2181 |
| Broadleaves | 8 | 17 | 0 | 6 | 0 | 0 | 0 | 0 |
| Total | 170 | 244 | 315 | 472 | 617 | 1888 | 774 | 2181 |
| Dominant height (m) | 37.2 | 37.3 | 31.0 | 30.4 | 24.0 | 21.1 | 23.6 | 17.8 |
| G/ha (m2 ha−1) | 33.86 | 43.94 | 37.14 | 47.54 | 30.20 | 47.45 | 32.41 | 37.63 |
| dg (cm) | 50.31 | 47.92 | 38.74 | 35.80 | 24.97 | 17.89 | 23.09 | 14.82 |
| Age (years) | 123 | 128 | 78 | 77 | 43 | 38 | 57 | 41 |
| Site classa (m3 ha−1 a−1) | 12.30 | 12.19 | 11.05 | 11.00 | 15.00 | 15.00 | 9.36 | 9.50 |
| SDIb | 573.93 | 754.37 | 674.29 | 881.26 | 615.50 | 1055.50 | 674.13 | 879.47 |
| CCFc | 114.62 | 146.55 | 146.32 | 201.69 | 164.41 | 316.14 | 183.61 | 302.46 |
a
Mean annual increment at age 100 according to Marschall (1975).
b
SDI = N·(25/dg)−1.73 according to Sterba (1987).
c
The sum of the crown projection areas of equally large open grown trees in percent of the stand area according to Krajicek et al. (1961) with open grown tree crown widths of Hasenauer (1997).