Wood density and microfibril angle from pith to bark of a sugi cultivar (Cryptomeria japonica, Japanese cedar, Tosaaka) grown in a Nelder plot

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 Initial tree densities and growth traits of sample trees

Symbol	Density (trees/ha)	Age	n	H (m)	DBH	HCB (m)	H/D ratio
Symbol	Density (trees/ha)	Age	n	H (m)	(cm)	HCB (m)	H/D ratio
D	4823	38	9	17.4 (1.2)^a	22.7 (3.5)^a	10.8 (1.1)^a	77.6 (8.5)^a
E	3349	38	9	18.3 (2.4)^a	28.5 (4.7)^ab	11.5 (1.0)^a	65.3 (9.2)^b
G	1615	38	9	18.3 (1.3)^a	27.7 (3.8) ^ab	11.0 (1.4)^a	66.9 (7.2)^b
H	1122	38	9	19.4 (2.6)^a	34.9 (7.7)^b	9.2 (1.9)^a	56.8 (7.3)^b
J	541	38	9	19.7 (2.3)^a	43.1 (8.7)^c	5.9 (2.5)^b	46.5 (4.7)^c

The values represent averages in three trees; values in parentheses indicate standard deviations. Different characters show significant differences among density-zoning symbols (Tukey HSD), p < 0.05)
H/D ratio was calculated by the following formula. H/D ratio = tree height (m)/diameter at breast height (cm) × 100
Symbol initial tree density zoning symbol, Density initial tree density, n number of sample trees, H tree height, DBH diameter at breast height, HCB height at crown base, H/D ratio height-to-diameter ratio