and waterways between 120 feet and 660 
feet in width, which are classed as land area 
by the Bureau of the Census, are also included 
as water areas. 
Forest Types? 
Pine types—Stands in which softwood species 
comprise at least 25 percent of the dominant and 
codominant trees with the named pine species pre- 
dominating. Scattered stands of shortleaf pine and 
spruce pine are included with the loblolly pine type. 
Cypress—Stands in which softwood species com- 
prise at least 25 percent of the dominant and co- 
dominant trees with cypress or white cedar predomi- 
nating. 
Lowland hardwoods—Stands in which mixed hard- 
woods such as water tupelo, blackgum, sweetgum, 
white oak, water oak, red maple, and ash comprise 
at least 75 percent of the dominant and codominant 
trees. Found along rivers, small streams, and in 
swamps and bays. 
Upland hardwoods—Stands in which mixed hard- 
woods such as red oak, white oak, post oak, hickory, 
ash, sweetgum, elm, and yellow-poplar comprise at 
least 75 percent of the dominant and codominant 
trees. Found on the drier upland sites and on low 
rolling hills bordering the flatwood zone. 
Scrub oak—Stands in which scrub species such 
as blackjack, bluejack, turkey and laurel oaks pre- 
dominate and in which sound commercial species 
comprise less than 5 percent of satisfactory stocking. 
Palms—Stands in which there is at least a 5- 
percent stocking of merchantable palm trees and less 
than 5-percent stocking of other sound commercial 
species. 
Stand-size Glasses 
Saw timber—Stands with saw-timber trees having 
a minimum net volume of 1,500 board feet net, 
International %-inch log rule, per acre in sound, 
live, softwood trees 9.0 inches d.b.h. or larger, or 
hardwood trees 11.0 inches d.b.h. or larger. Two 
classes of young saw-timber stands are recognized: 
1. Large saw timber—Saw-timber stands having 
more than 50 percent of the net board-foot 
volume in softwood trees 15.0 inches d.b.h. or 
larger, or hardwood trees 17.0 inches d.b.h. 
or larger. 
9Refers to types discussed in text but not to types listed 
in table 18. 
The Timber Supply Situation in Florida 
2. Small saw timber—Saw-timber stands having 
50 percent or more of the net board-foot 
volume in softwood trees less than 15.0 inches 
d.b.h., or hardwood trees less than 17.0 inches 
d:byh: 
Pole timber—Stands failing to meet the saw- 
timber stand specification, but at least 10 percent 
stocked with pole-timber and larger trees (5 inches 
d.b.h. and larger) and with at least half the stocking 
in pole-timber trees. 
Seedling and sapling—Stands not qualifying as 
either saw-timber or pole-timber stands, but having 
at least 10 percent stocking of trees of commercial 
species and with at least half the minimum stocking 
in seedlings and saplings. Eight hundred seedlings 
or saplings per acre are considered full stocking. 
Nonstocked and other areas not elsewhere classi- 
fied—Areas not qualifying as saw-timber, pole-tim- 
ber, or seedling and sapling stands. 
Diameters 
D. b.h. (diameter at breast height) —Stem diameter 
in inches, outside bark, measured at 4% feet above 
the ground. 
Diameter class—All trees were tallied by 2-inch 
diameter classes, each class including diameters 1.0 
inch below and 0.9 inch above the stated midpoint, 
e.g., trees 7.0 to and including 8.9 inches are in 
the 8-inch class. 
Tree Classification 
Growing stock—Net volume in cubic feet of live 
saw-tiumber trees and live pole-timber trees from 
stump to a minimum 4.0-inch top (of central stem) 
inside bark. 
Saw-timber trees—Net volume in board feet, 
International 14-inch rule, of softwood trees at least 
9.0 inches d.b.h. and hardwood trees at least 11.0 
inches d.b.h., with not less than one merchantable 
log 12 feet long, or with not less than 50 percent 
of the gross volume of the tree in sound timber. 
Pole-timber trees—-Straight-boled trees between 5.0 
inches d.b.h. and saw-timber sizes. 
Sound cull trees—Live trees of saw-timber or 
pole-timber size which meet required specifications 
of freedom from rot but will not make at least one 
merchantable sawlog, now or prospectively, according 
to regional specifications because of roughness, poor 
form, or species. Volumes shown in the text for sound 
55 
