Table 2.
Results of tree-ring analysis according to the feed speed of resistograph
Species
Number of tree ring
Avg. of latewood width (%)
Feed speed (cm/min)
Needle speed (r/min)
Larch (
Larix kaempferi
)
36
27.92
100
1500
Douglas fir (
Pseudotsuga menziesii
)
29
31.71
100
1500
Korean pine (
Pinus koraiensis
)
36
12.94
175
1500
Fir (
Abies holophylla
)
32
14.53
150
1500
Zelkova (
Zelkova serrata
)
63
75.97
75
1500