FOREST TERMINOLOGY 85 



Intermittent management. The management of a forest for a periodic instead of 

 annual yield. 



G., Aussetzender Betrieb. 



Interplant. To set out young trees among existing young seedling growth, planted 

 or natural; applicable also to planting land partly occupied by brushwood. 



Intolerant. Incapable of enduring much shade, varying with species, age, and site. 

 Syn.: light demanding. 

 G., lichtbediirftig. F., temperament robuste. 



Large pole. See Tree class. 



Large sapling. See Tree class. 



Lath screen. See Shade frame. 



Leader. The terminal shoot of the main stem. 



Leaf canopy. See Crown cover. 



Leaf litter. See Forest floor. 



Leaf mold. See Humus. 



Liberation cuttings. See Intermediate cuttings. 



Lift, V. To loosen and remove seedlings from the seedbed in a nursery. 



Light-demanding. See Intolerant. 



Litter. See under Forest floor. 



Locality. See Site. 



Log rule. 1. A tabular statement indicating the estimated or calculated amount 

 of lumber which can be sawed from logs of given lengths and diameters. 



2. A graduated rule (usually made of wood) for measuring the diameters and 

 volumes of logs, the number of board feet in logs of given diameters and lengths 

 being shown upon the rule. (Usually called Scale stick {q. v.) ). 



Log scale. See Scale stick. 



Logging unit. A part of a forest which can conveniently be made the basis of an 

 individual logging operation. 

 Syn.: chance; logging chance. 



Lot. See Subdivision. 



Low pole. See Tree class. 



Lumber rule. See Board rule. 



Lumber scale. See Board rule. 



Management. See Forest management. 



Marginal seeding. See Reproduction (strip) method. 



Marking hammer. A tool used for marking trees or logs or other products with 

 various characters, signs, numbers, etc. 



Mature forest. A forest or stand which has reached its age of utilization (com- 

 mercially). The meaning of maturity differs with the object of management, 

 and to the forester is a matter of calculation on various bases. Biologically, 

 maturity would refer to the age of seed production; physically, to cessation of 

 height growth. Financial maturity is attained when the highest forest income or 

 interest (which occurs when the index per cent is equal to the demanded business 

 per cent), or forest rent, or soil rent, or otherwise financially best results can be 

 secured. After this point of maximum result is passed the forest income decreases 

 and the forest is said to be "financially overmature." See also Rotation. 

 Syn.: ripe. 

 G., finanzielle Hiebsreife. 



Mean annual forest per cent. See Forest per cent. 



