Framework / Assessment Oregon Indicators of Sustainable Forest Management Summary This indicator will produce tabular and graphical information on historical and current trends in the extent of nonfederal forest land base, particularly large contiguous tracts of forestland with few developments, and projections of future development of forestland to other uses. Maintaining and enhancing the productive capacity of forests to produce the ecological, social, and economic values people expect from their forests requires limiting the development of forestland to other uses.