The maximum width of groups is approximately twice the height of the mature trees, with small openings providing micro-environments suitable for tolerant regeneration and the larger openings providing conditions suitable for more intolerant regeneration. Reserves A variant of the Group Selection Method in which some trees within the group are not cut to attain goals other than regeneration within the group. The time between the initial regeneration cutting and the successful re-establishment of a new age class by natural means, planting, or direct seeding. A treatment designed to free young trees from undesirable, usually overtopping, competing vegetation. Sapling A tree, usually young, that is larger than a seedling but smaller than a pole.
Size varies by region.
The art and science of controlling the establishment, growth, composition, health, and quality of forests and woodlands to meet the diverse needs and values of landowners and society on a sustainable basis. Silvicultural System A planned processes whereby a stand is tended, harvested, and re-established. Site Index A measure of actual or potential forest productivity expressed in terms of the average height of a certain number of dominants and co-dominants in the stand at an index age. The productive capacity of a site, usually expressed as volume production of a given species. Size Class Tree size recognized by distinct ranges, usually of diameter or height.