This article presents the correlation of power function between the alder diameter and amount of alder(Alnus crernastogyne) foliage, which may be expressed by means of logarithm regression equation as follows;log Wf = 1.322,2 log D- 0.7497 (in slope, in May)log Wf= 1.7995 log D- 0.7866 (in gully, in May)log Wf = 1.9048 logD- 0.5951(in slope, in September)All the Correlation coefficients are very close. According to the equations the amount of foliage in the 7-year-old plantation can be calculated. The resul...