Clients will notice a decrease in all
population attributes when comparing annual tables that
include data from 2005 and beyond to earlier tables.
This is caused by a redefinition of forest land. Prior
to 2005, forestland was defined as land having, or that
formerly had, 5 percent or more cover of tally tree
species. The Forest Service Research Washington Office
staff determined that the international definition of
forestland uses a 10 percent cover minimum. Based on
this new criterion, office staff re-examined and reclassified
all plots collected under the annual data collection
protocol. This reclassification resulted in plots that
were formerly called forest to be put in the nonforest
category. There is an overall decrease in forest area
and associated attributes, such as volume.