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Forest:
A tract of land of at least 1 acre, at least 120 feet wide,
and at least 16.7percent stocked with forest trees of any size.
An example of minimum stocking would be 15 seedling/saplings
per acre.
Forest Type Group:
An administrative reporting system of the USDA Forest Service
that combines one or more forest cover types based on similar
characteristics and habitat requirements. For example, the Oak/Hickory
Forest Type Group is comprised, in part, of the Chestnut oak/black
oak/scarlet oak forest type and the White oak/red oak/hickory
forest type. Because these tree species are closely related
and/or share similar habitat requirements they are commonly
found growing together.
Stand Size Class:
An administrative reporting system of the USDA Forest Service
Forest Inventory and Analysis Program that classifies stands
of timberland as "large," "medium" or "small"
based on the predominant diameter class of live trees that are
present within a condition. Large diameter trees are at least
11.0 inches in diameter for hardwoods and 9.0 inches in diameter
for softwoods; Medium diameter trees are 5.0 - 10.9 inches for
hardwoods and 5.0 - 8.9 for softwoods; Small diameter trees
are less than 5.0 inches in diameter.
Large Diameter Stand-Size Class:
Large diameter stands are stands with an all live stocking
of at least 10 (base 100). Further, more than 50 percent of
the stocking must be in the medium and large diameter size class,
and the stocking of large diameter trees must be greater than
or equal to the stocking of medium diameter trees.
Medium Diameter Stand-Size Class:
Medium diameter stands are stands with an all live stockig
of at least 10 (base 100). Further, more than 50 percent of
the stocking must be in the medium and large diameter size class,
and the stocking of medium diameter trees must be greater than
the stocking of large diameter trees.
Small Diameter Stand-Size Class:
Small diameter stands with an all live stocking value of at
least 10 (base 100) on which at least 50 percent of the stocking
is in small diameter trees.
Silviculture:
The art and science of manipulating the establishment, growth,
composition, health and quality of forests to meet the diverse
needs and values of landowners and society on a sustainable
basis.
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