Official Journal of the Japan Wood Research Society
Table 4 Annual ring width and wood density at each site
From: Intra-ring radial cracks in Sakhalin spruce (Picea glehnii) from artificial forest
Site | Number of year | Annual ring width (mm) | Mean wood density (kg/m3) | Earlywood density (kg/m3) | Latewood density (kg/m3) | Proportion of latewood (%) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Ave | S. D | Ave | S. D | Ave | S. D | Ave | S. D | Ave | S. D | ||
A | 1–10 | 4.94 | 1.18 | 443 | 65 | 382 | 66 | 685 | 64 | 22.1 | 18.9 |
11–20 | 4.04 | 1.01 | 386 | 35 | 327 | 28 | 723 | 66 | 15.4 | 6.9 | |
B | 1–10 | 4.68 | 1.07 | 390 | 69 | 347 | 45 | 668 | 58 | 16.2 | 22.1 |
11–20 | 3.03 | 1.03 | 366 | 40 | 327 | 30 | 683 | 88 | 11.2 | 5.3 | |
C | 1–10 | 3.43 | 1.15 | 421 | 73 | 367 | 61 | 685 | 61 | 18.9 | 16.9 |
11–20 | 3.18 | 0.96 | 393 | 57 | 341 | 37 | 726 | 123 | 13.8 | 10.5 | |
D | 1–10 | 3.95 | 1.14 | 446 | 75 | 368 | 64 | 728 | 64 | 23.4 | 18.7 |
11–20 | 3.31 | 1.06 | 428 | 56 | 350 | 35 | 759 | 69 | 20.3 | 10.5 | |
E | 1–10 | 4.85 | 1.12 | 388 | 52 | 352 | 43 | 662 | 52 | 13.8 | 17.6 |
11–20 | 4.08 | 1.10 | 359 | 36 | 319 | 26 | 706 | 46 | 10.7 | 5.2 | |