abeka 7th grade science section review 12.3

Forest management

A scientist is studying how the number of trees in an area affects how much wood each tree can produce when it is harvested. What branch of forestry is he working in?

list the eight general forest regions of North America and the major types of trees found in each.

Northern coniferous forest, evergreens; Northern hardwood forest, maple, beech, hemlock, and birch; central broad-leaved forest, hardwoods and conifers; Southern forest, pine and hardwoods; bottomland hardwood forest, hardwoods; Pacific coast forest, redwoods and giant sequoias; Rocky Mountain forest pine, conifers, and aspens; tropical forest, mahogany, mangrove, and bay

define forest.

a dense collection of trees with a thick top layer of interlaced leaves called the canopy.

why do trees not grow well beyond the tree line?

because of certain altitudes and elevations

46%; 33%

what percentage of the United States was forest in 1630? In 1907?