Rotation means the planned number of years between the formation or regeneration of a stand and its final cutting at a specified stage of maturity. Salvage means an operation made to cut and utilize trees which have been killed, badly injured, or clearly threatened usually by natural causes. It usually has no silvicultural objective other than the harvesting of the injured or threatened trees. Sapling means a tree greater than one-inch dbh and less than 4.9 inches dbh. Sapling Sprout means a single dominant tree of sprout origin resulting from the cutting of a sapling.
Seedling means a young tree of seed origin, less than one-inch dbh.
Seedling Sprout means a single tree of sprout origin resulting from the cutting of a seedling. Shade Tolerance means a relative measure of a species ability to grow and persist in various levels of light. Species which require full sunlight to grow, such as cherry or gray birch, are called intolerant. Species which persist in shaded conditions, such as hemlock or sugar maple, are called tolerant. Silviculture means the branch of forestry concerned with the theory and practice of controlling forest establishment, composition and growth.