Table 1 Thinning prescriptions, specified by relative density (RD) following Curtis (1982), and actual number of thinnings with final stocking at the three study sites (803, 805, 808)
From: Validation of models predicting modulus of elasticity in Douglas-fir trees, boles, and logs
| Â | Â | Prescribed treatment | Actual thinnings | Stocking at harvest (sph) | ||||
|---|---|---|---|---|---|---|---|---|
Treatment | No. | Description | 803 | 805 | 808 | 803 | 805 | 808 |
A | 0 | No thinning (control) | 0 | 0 | 0 | 514 | 692 | 494 |
B | 1 | Minimal thinning: RD55 → RD30 | 1 | 1 | 1 | 287 | 425 | 292 |
C | 1 | Delayed thinning: RD65 → RD35 | 0 | 0 | 1 | 558 | 351 | a |
D | 2+ | Repeated thinning: RD55 → RD30, all subsequent RD50 → RD30 | 1 | 2 | 1 | 326 | 217 | 242 |
E | 3+ | Repeated thinning: RD55 → RD35, RD55 → RD40, all subsequent RD60 → RD40 | 1 | 1 | 1 | 410 | 400 | 351 |