Three trees were collected from each location and each of the
following tree property maps (figures 1 through 4) is an
average of the three trees taken. These tree property maps
show the variation in a particular property within the tree.
Figure 1 shows the variation of specific gravity in the 55year-old trees from the Crossett site. The specific gravity for
a given growth ring increases with tree height. The base of
the tree provides the highest values of specific gravity, with
the lowest derived within the juvenile core.