WHI fE PINES OF JAPAN 



183 



(2) Hakodate Forest b ; Hokkaido has the same topography as 

 Forest A, and is 45 years old. The a^rage height is 11 m, the average 

 diameter is 18.5 cm (range 6 to 40 cm). Density is 935 trees/ha, and the 

 volume is 226 iii 3 /ha. The annual growth is 6.0 m 3 /ha. 



(3) Asamata National Forest, Akita Prefecture, Honshu, is about 

 85 years old. The average height is 15 m, and the average diameter is 

 18 cm. Densit) is 1920 trees/ha, the volume is 340 m 3 , and the annual 

 growth is 4 m 3 /ha. The annual precipitation of this forest is 1236 mm 

 (48 inches), the average maximum temperature is 16.2°C (61°F) , and the 

 average minimum temperature is 6.2°C (43°F) . 



A remnant stand of P. pentaphylla is shown in Figure 2. 



Figure 2. Old remnant- 

 stand trees of Pinus 

 pentaphylla growing on 

 Mt . Hakkoda, Aomori 

 Prefecture, in northern 

 Honshu . 



Plantations of P. pentaphylla occur at 



(4) Shizunai, Hokkaido; a plantation of 2 ha that was established 

 in 1932. It is situated at 280 m above sea level on a southwest slope. 



