WHITE PINES ASIA: ARMAND AND KOREAN PINE 



135 



40 60 80 100 



120 140 160 1 80 BOO 

 Age 



Figure 12. Volume growth based on a single tree of Pinus 

 kovaiensis in a natural stand in northern Korea. 



According to studies on the yield and growth of P. kovaiensis in 

 which 103 plantations on various sites of south Korea were investigated 

 (Kim and Lee, 1966), this species attains a size of 28 cm d.b.h. and 

 23 m of height in 50 years on a good site, giving a stock volume of 

 350 m 3 /ha. The mean annual increment and the current annual increment 

 curves culminate at the ages of 42 and. 27 years respectively (Fig. 13-17). 



TIMBER QUALITY 



P. kovaiensis is characterized by straight stems, light yellowish- 

 brown sapwood, and a yellowish-brown heartwood which is easily distinguish- 

 able from sapwood. It is straight grained and medium to coarse textured. 

 Resin canals are conspicuous , and located axial and radial, but the wood 

 has no characteristic resinous odor or taste. Growth rings are distinct, 

 and transition from springwood to summerwood is abrupt. Wood rays are 

 fine and visible to the naked eye (Fig. 18). The average cellulose content 

 of fiber is around 54.08% (a-cellulose = 70.68%) (Chosen Govt. -Gen., 1940). 



