Table 8.  Net volume of sawtimber on timberland by species group and diameter class, Massachusetts, 2005 
  
                                                (Standard error as percentage of total) 
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                                                     Diameter class (inches at breast height)                                        
         Species group       _______________________________________________________________________________________      All         
                                 9.0-       11.0-      13.0-      15.0-      17.0-      19.0-      21.0-                classes      
                                 10.9        12.9       14.9       16.9       18.9       20.9       28.9       29.0+                 
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      Balsam fir                  100.0         .0         .0         .0         .0         .0         .0         .0      100.0  
      Black spruce                100.0         .0         .0         .0         .0         .0         .0         .0      100.0  
      Red spruce                   42.7      100.0       60.5         .0       73.8      100.0         .0         .0       54.5  
      Red pine                     78.8      100.0         .0      100.0         .0         .0         .0         .0       63.9  
      Pitch pine                   31.6       43.1       34.4      100.0         .0         .0         .0         .0       29.2  
      Eastern white pine           15.9       14.7       13.8       15.0       16.0       24.8       27.3       47.0       12.9  
      Eastern hemlock              18.4       20.9       22.9       21.7       29.8       36.3       47.1      100.0       17.9  
      Other softwoods             100.0         .0         .0         .0         .0         .0         .0         .0      100.0  
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        Total softwoods            10.9       11.4       11.0       12.2       13.7       21.2       26.2       42.0       10.3  
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      Red maple                      .0       12.9       16.6       18.3       30.4       43.1       60.7         .0       12.2  
      Sugar maple                    .0       25.8       26.9       32.0       50.7       70.8       62.5         .0       24.6  
      Yellow birch                   .0       28.5       33.7       72.1       70.8      100.0         .0         .0       25.4  
      Paper birch                    .0       27.7       69.2       72.1         .0         .0         .0         .0       31.8  
      Hickory                        .0       37.9       58.8      100.0      100.0         .0         .0         .0       34.7  
      American beech                 .0       31.0       39.3       44.1         .0      100.0       71.3         .0       28.2  
      White ash                      .0       26.0       26.9       50.1       71.4       77.6       75.2      100.0       25.6  
      Yellow-poplar                  .0         .0         .0      100.0      100.0         .0         .0         .0      100.0  
      Blackgum                       .0       57.2         .0         .0         .0         .0         .0         .0       57.2  
      Aspen                          .0       35.5       42.9       42.0       71.8         .0         .0      100.0       38.1  
      Black cherry                   .0       24.3       46.0       46.2       39.8       74.3       53.2         .0       28.6  
      White oak                      .0       30.2       26.6       38.2       71.4       50.6       71.6      100.0       20.5  
      Northern red oak               .0       19.4       19.0       21.3       23.0       29.2       24.5       72.4       13.8  
      Other white oaks               .0       45.4       65.2       45.9      100.0         .0         .0         .0       37.9  
      Other red oaks                 .0       21.8       25.0       27.6       33.2       58.0       39.7         .0       16.1  
      American basswood              .0         .0         .0         .0         .0      100.0      100.0         .0       70.7  
      Elm                            .0      100.0         .0         .0         .0         .0         .0         .0      100.0  
      Other hardwoods                .0       27.4       36.5       41.5       73.1         .0         .0         .0       23.2  
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        Total hardwoods              .0        7.1        8.5       10.0       14.8       18.4       17.4       61.3        7.3  
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      Total, all species           10.9        6.2        6.8        7.7        9.9       14.3       18.1       40.0        6.2  
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