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Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image

Table 2 Summary of second derivative spectral changes with degradation of softwood

From: Determination of physical and chemical properties and degradation of archeological Japanese cypress wood from the Tohyamago area using near-infrared spectroscopy

Refs. Fig. Species Degradation 6130 cm−1 5986 cm−1 5890 cm−1 5800 cm−1 5750 cm−1
Peak 9 Peak 10 Peak 11 Peak 12 Peak 13
  2-c Cypress (Chamaecyparis obtusa) NNTY9p + + +
  2-c Cypress (Chamaecyparis obtusa) NNTY59a + NA NA
17 1-a Cedar (Cryptomeria japonica) Thermal (air-dry) NAa NA
16 2-c Cypress (Chamaecyparis obtusa) Hygrothermal + NA + +
7 2-a Cypress (Chamaecyparis obtusa) Aging (Todaiji) NA + NA
12 1-e Spruce (Picea abies L. Karst) White-rot fungi NA NA
12 1-e Spruce (Picea abies L. Karst) Brown-rot fungi NA + NA
4 4 Pine Waterlogged NA + + + NA
20 4 Cypress (Chamaecyparis obtusa) UV lightning NA NA NA
  1. aNA indicates that the spectral change with degradation was unclear