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Official Journal of the Japan Wood Research Society

Table 1 Sample trees

From: Seasonal variations of auxin and gibberellin A4 levels in cambial-region tissues of three conifers (Pinus elliottii, Chamaecyparis obtusa, and Cryptomeria japonica) with inherently different wood densities

Species No. Age H DBH H/D ratio Wood density
(m) (cm) (%) (kg/m3)
Sugi
(Cryptomeria japonica)
1 33 16.0 22.6 70.8 303
2 15.7 22.1 70.9 298
3 14.8 18.5 80.1 375
4 16.4 22.9 71.5 303
Hinoki
(Chamaecyparis obtusa)
1 33 12.1 15.6 77.5 429
2 12.6 13.7 92.0 433
3 11.6 13.4 86.7 394
4 11.5 12.1 95.0 406
Slash pine
(Pinus elliottii)
1 57 22.2 44.9 49.4 543
2 26.1 59.9 43.6 523
3 23.0 35.0 65.7 555
4 27.7 50.0 55.4 475
  1. H tree height, DBH diameter at breast height, H/D ratio height-to-diameter ratio
  2. The wood density was measured on the samples with 2–4 outer rings (including the current rings being formed in 2011)