Table 6.  Volume of growing stock on timberland by forest-type group and  
                 softwood/hardwood species categories, Massachusetts, 2005 
  
                     (Standard error as percentage of total) 
   ___________________________________________________________________________ 
                                      Species group                             
     Forest-type           ________________________________          Total       
         group                  Softwoods         Hardwoods       all species   
   ___________________________________________________________________________ 
   White/red pine                    16.6              18.6              16.0  
   Spruce/fir                       100.0             100.0             100.0  
   Loblolly/shortleaf                44.7              63.2              44.6  
   Oak/pine                          18.3              19.0              18.1  
   Oak/hickory                       19.3              12.1              12.0  
   Oak/gum/cypress                   68.1              46.4              47.7  
   Elm/ash/red maple                   .0              41.9              41.9  
   Northern hardwoods                19.0              12.4              12.3  
   Aspen/birch                       61.5              56.6              56.1  
                           ___________________________________________________ 
      All type groups                 9.2               5.6               5.1  
                           ___________________________________________________ 
   All groups                         9.2               5.6               5.1  
   ___________________________________________________________________________