5. 



MUCK. A soil formed of well decomposed organic material found 

 under conditions of impeded drainage. (BCFT modified) 

 (See Peat.) 



NONPRODUCTIVE FOREST LAND. Land of inherent low forest potential, 

 such as open or treed muskeg, periodically flooded lands, 

 and rock barrens.* 



OPERATING PERIOD. The period for which the operating plan is pre- 

 pared. 



OPERATING PLAN. A part of the management plan stating the extent 

 of all work of any nature to be carried out during one or 

 more years of the management period. Such plans are based 

 on the prescriptions of the management plan as modified by 

 financial provision. (BCFT modified) 



OPERATING UNIT. A temporary subdivision of a management unit, 



having prominent boundaries, established for the purpose 

 of controlling operations until the forest is divided 

 into compartments.* 



PEAT. The residues of natural vegetation which have been affec- 

 ted by processes of anaerobic decomposition, usually under 

 waterlogged conditions. (BCFT) (See Muck.) 



PRESCRIBED BURNING. The application of fire to land under such 

 conditions of weather, soil, moisture, time of day, and 

 other factors as presumably will result in the intensity 

 of heat and spread required to accomplish specific silvicul- 

 tural, wild life, grazing, or fire hazard reduction pur- 

 poses. (BCFT) 



PRODUCTION FOREST. An area of productive forest land dedicated to 

 the growing of merchantable timber or the production of 

 other forest produce. 



PRODUCTIVE FOREST LAND. Land bearing, or capable of bearing, tim- 

 ber of merchantable character and not withdrawn from such 

 use. (SAF modified.) 



PROTECTION FOREST. An area wholly or partially covered with woody 

 growth, managed primarily to regulate stream-flow, prevent 

 erosion, hold shifting sand, or exert any other beneficial 

 influence. (BCFT) 



PRUNING. The removal of live or dead branches from standing trees 

 to increase the quality of the final product. 



REGENERATION. The renewal of a forest crop by natural or artifi- 

 cial means; also the new crop obtained. (BCFT) 



REGENERATION PERIOD. The number of years between the harvest cut 

 and time the new crop becomes established on a particular 

 forest area.* 



