Modeling of radial variations of wood properties in naturally regenerated trees of Betula platyphylla grown in Selenge, Mongolia

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 2 Comparison of wood properties of B. platyphylla grown in Mongolia with other Betula species

Species	Country	Tree age	WFL (mm)	VEL (mm)	BD (g/cm³)	AD (g/cm³)	DMOE (GPa)	MOE (GPa)	MOR (MPa)	U (kJ/m²)	CS (MPa)	SS (MPa)	References
B. platyphylla	Mongolia	33–70	1.03	0.61	0.55	0.64	11.20	8.75	85.8	72.3	43.5	9.4	Present study
	Japan	44				0.59		10.9	92.8		52.7		[17]
	Japan	49–60	1.20	0.70	0.48	0.58	12.40	9.89	97.8	75.9–128.2	45.1		[9]
	China	UK						9.25	90.9		41.8		[3]
B. utilic	China	UK						9.55	102.4		44.4		[3]
B. grossa	Japan	UK	0.5–2.1	0.6–1.2		0.72		13.7	107.9	137.1	49.0	9.8–18.6	[29]
B. maximowicziana	Japan	49				0.64		12.7	117.4		58.9		[17]
	Japan	UK	0.5–2.1	0.6–1.2		0.67		12.7	102.9	98.1	47.1	8.8–18.6	[29]
	Japan	UK				0.60		12.3	105.1	93.7	45.7		[31]
B. ermanii	Japan	43				0.70		13.7	119.3		61.2		[17]
B. pendula	Finland	45–56	1.17	0.76	0.48								[1]
B. pendula	Finland	UK			0.51			14.5	113.9				[20]
B. pubescens	Finland	45–56	1.11	0.78	0.44								[1]
B. pubescens	Finland	UK			0.48			13.2	104.1				[20]
B. alleghaniensis	U.S.A	UK								89.0			[32]
B. papyrifera	U.S.A	UK								48.5			[32]

WFL, wood fiber length; VEL, vessel element length; BD, basic density; AD, air-dry density; DMOE, dynamic Young’s modulus; MOE, modulus of elasticity; MOR, modulus of rupture; U, absorbed energy in impact bending; CS, compressive strength; SS, shearing strength; UK, unknown