14 TERMS USED IN FORESTEY AND LOGGING. 



Increment, n. The volume or value of wood produced during a given period by 

 the growth of a tree or of a stand. See Accretion. 



Syn. : volume growth. G., Zuwachs. F., accroisement. 

 Three kinds of increment are distinguished : 

 Volume increment is the increase in volume of a tree or stand. 

 Quality increment is the increase in valtie per unit of volume. 

 Price increment is the increment resulting from an increase in the price of forest 

 products independent of quality increment. 

 Increment borer. See Accretion borer. 

 Increment gang-e. See Accretion borer. 



Index, a. The highest average actually found upon a given locality. The term 

 index applied to stand, diameter growth, height growth, increment, and present 

 and future yield is the equivalent of normal, when normal is used to describe the 

 assumed standard based upon actual measurement. 

 Syn. : normal. G. and F. , normal. 

 Index forest. That forest which in density, volume, and increment reaches the 

 highest average which has been found upon a given locality. Measurements of 

 such a forest provide a standard for comparison with other forests of the same age 

 and composition, grown under similar conditions. 

 Syn. : normal forest. 

 Indirect effects. See Forest influences. 

 Intermediate, a. Having the crown shaded on the sides, but free to light at the 



top. See Crown class. 

 Intermediate yield. All material from thinnings or from any cutting not intended 

 to invite or assist reproduction. See Final yield. 

 G. , Z wischennutzung. F. , produits intermediaires. 

 Intermittent Working*. See Working. 

 Intolerant, a. Incapable of enduring heavy shade. 



Syn.: light demanding. G., lichtbediirftig. F. , a, temperament robuste. 

 Irregular forest. Forest in which the trees differ considerably in age. 



Syn.: uneven-aged forest. G., ungleichalterigerBestand. F., peuplementmele. 

 Larg^e pole. See Pole. 

 Larg-e-pole forest. A forest of large poles. 

 Larg-e sapling". See Sapling. 

 Larg-e-sapling- forest. A forest of large saplings. 

 Leaf canopy. See Crown cover. 

 Leaf cover. See Litter. 

 Leaf litter. See Litter. 

 Lift, V. To pry up seedlings in the seedbed, so that they may be pulled up by hand 



for transplanting. 

 Light demanding". See Intolerant. 

 Lig-ht screen. See Shade frame. 

 Line ont, to. To transplant seedlings from the seedbed to rows in the forest nursery. 



G., verschulen. F., repiquer. 

 Litter, n. That portion of the forest floor which is not in an advanced state of 

 decomposition. 



Syn.: leaf litter, leaf cover, duff. G., Streu. F., litiere. 



