Simple separation of Torreya nucifera and Chamaecyparis obtusa wood using portable visible and near-infrared spectrophotometry: differences in light-conducting properties

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 Averages of five spectra obtained from each surface

Fresh/Degraded		Fresh				Degraded				Wood density (g/cm³)
Sap/Heart		Sapwood		Heartwood		Sapwood		Heartwood
Face		Radial	Tangential	Radial	Tangential	Radial	Tangential	Radial	Tangential
Torreya (TWTw No)	852	0.76		0.85		0.44		0.59	0.46	0.57
	4332	0.68		0.79	0.51	0.80		0.96		0.55
	9272	0.69		0.71	0.56	0.72	0.65	0.65	0.72	0.51
	13662			0.89	1.05	0.65		1.23		0.50
	19683	0.87		0.69	0.75	0.70	0.75	0.65	0.62	0.55
Chamaecyparis (TWTw No)	15	2.67		2.44	2.33	1.98		1.77	1.51	0.47
	75	2.57		5.45		4.28		5.24	2.88	0.53
	652	1.61		1.52	1.61	1.41	1.63	1.68	1.76	0.46
	9293	3.90		5.33	5.24	4.00		4.45	4.31	0.40
	21542			3.75	1.97			3.24	3.69	0.46