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.

MARSH

a wetland without trees, and which often has standing water.

LOAM

soil containing a mixture of clay, silt, sand, and humus. Loam contains a variety of particle sizes, which makes it ideal for most trees and …

HEARTWOOD

the older, harder, nonliving central portion of wood of some trees that is usually darker, denser, less permeable, and more durable than the surrounding sapwood. …