THIN

to selectively remove some of the trees in a forest area, allowing more water, sunlight, and nutrients for the trees that remain.

SWAMP

a wetland dominated by trees.

STAND

a contiguous group of trees sufficiently uniform in species composition, arrangement of age classes, and condition to be considered a distinguishable unit.

SOFTWOOD

a coniferous tree. The term softwood is commonly used but not strictly accurate; the wood of many conifers is harder than that of some nominally …

SELECTION HARVEST

removal of individual or small clusters of trees to manage a forest stand for a mixture of age classes and products. Also known as selection …

SAVANNA

a grassland with scattered trees or clumps of trees. Savannas are common to tropical and subtropical regions.

RENEWABLE RESOURCE

a naturally occurring raw material or form of energy that has the capacity to replenish itself through ecological cycles and sound management practices. The sun, …

OLD GROWTH FOREST

a forest that contains a disproportionate percentage of trees of the oldest age class for that forest type. What age category qualifies as “old growth” …

MIXED FOREST

a forest that includes both coniferous and broadleaf trees.