Predicting oven-dry density of Sugi (Cryptomeria japonica) using near infrared (NIR) spectroscopy and its effect on performance of wood moisture meter

Watanabe, Ken; Kobayashi, Isao; Kuroda, Naohiro; Harada, Masaki; Noshiro, Shuichi

doi:10.1007/s10086-012-1268-4

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 Studies that successfully predicted the density of solid wood based on NIR spectra from different species, sample size, wood surface and MC range

From: Predicting oven-dry density of Sugi (Cryptomeria japonica) using near infrared (NIR) spectroscopy and its effect on performance of wood moisture meter

Density	Species	Sample	Wood surface	MC range	Reference
BD	Picea abies	Disk	Tr	89–211 %	[7]
AD	Picea abies	Small block	Tr	<30 %	[4]
AD	Eucalyptus delegatensis	Strip	R	Around 12 %	[5]
OD	Larix decidua	Small block	R	12.3 ± 0.3 %	[8]
AD	56 species from around the world	Strip	R or T	Around 12 %	[9]
AD	Pinus radiata	Strip	R	Air-dried state	[10]
AD	Pinus palustris	Strip	R	Air-dried state	[6]
AD	Pinus radiata	Strip	R	Air-dried state	[11]
AD	Pinus taeda	Small block	R, Tr	Around 7 %, 100–154 %	[12]
AD	Pinus taeda	Strip	R	Air-dried state	[13]
AD	Pinus taeda	Small block	R, T	100–154 %	[14]
AD	Pinus taeda	Strip	R	Air-dried state	[15]
AD	Pinus taeda	Strip	R	Air-dried state	[16]
SG	Pinus taeda	Small block	R, Tr	12 %	[17]
AD	Pinus densiflora, Zelkova serrata	Small block	R	12 % on average	[18]
AD	Pinus palustris	Strip	R	Air-dried state	[19]
AD	Eucalyptus nitens	Strip	R	Air-dried state	[20]
AD	Pinus taeda	Strip	R	Air-dried state	[21]
AD	Larix gmelinii Larix kaempferi	Small block	R	13.1 % on average	[22]
BD	Quercus spp.	Small block	R, T, Tr	68–100 %	[23]
SG	Pinus taeda	Increment core	R	Green state, air-dried state	[24]
AD, BD	Pinus taeda	Strip	R	Air-dried state	[25]
AD	Larix gmelinii, Larix kaempferi	Lumber	T	13.1 % on average	[26]
BD	Eucalyptus urophylla	Small block	R, T, Tr	12 %	[27]
SG	Pinus taeda	Strip, log	R for strip, Tr for log	100–154 % for strip, 70–200 % for log	[28]
AD	Pinus taeda	Strip	R	Air-dried state	[29]
BD	Eucalyptus nitens	Increment core	–	Green state	[30]
AD	Larix kaempferi	Lumber	T	8.6–9.5 %	[31]
AD	Larix kaempferi	Lumber	T	10.6 % on average	[32]
AD	Abies balsamea, Picea mariana	Stick	R	Green state, air-dried state	[33]
SG	Eucalyptus tereticornis	Small block	R, T	7–16 %	[34]
AD	Eucalyptus camaldulensis	Strip	–	Air-dried state	[35]
AD	Pinus pinaster Aiton, Larix × eurolepis	Strip	T	Air-dried state	[36]

AD air-dry density, BD basic density, SG specific gravity (the ratio of oven-dry mass per moist volume to the density of water), OD oven-dry density, Tr transverse surface, R radial surface, T tangential surface

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