Xїnw@Xїn35(1), 1993, pp. 42`49

 

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Takeo TANIMOTO: Sprouting of beech (Fagus crenata Blume) in the regeneration of the beech forests and its environmental condition  

Sprouts of beech (Fagus crenata) on various site condition were studied to clarify patterns of the sprouts in ghigh beech forest typeh and gdwarf beech forest typeh. The ecological importance and the relationships between the sprouts patterns and site conditions were discussed.

There are few sprouts of beech (Fagus crenata) in closed stands of ghigh beech forest typeh. But within a few years after mast year, there are many seedlings, which were classified into seedlings and gseedling sproutsh. The seedlings were died within a few years under the closed canopy. Under small canopy gaps, a few seedlings can survive to recover up to sapling stage and young tree stage and they repeat die-back and recovery by sprouts. Sprouting activities of the beech maintain below 10-15cm in D.B.H. and decrease above the size. Some beech gseedling sproutsh can survive under the open canopy like Fagus japonica. Consequently, the growth of sprouts in the styands of ghigh beech forest typeh depends on the light condition under the canopy.

On the other hand, the beech sprouts in gdwarf beech forest typeh were depended on topographical condition, such as summit phenomena. The beech trunks were broken by physical damage of deep snow csused by prevailing wind up to the size below 10-20cm in trunk diameter and after recovered by sprouts. The gdwarf beech forest typeh was maintained by repetitions of trunk broken and sprouting. Such a sprouting ability of the beech is very important to survive under severe condition like heavy snow area.    


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