Table 9-6. Total Biomass (above and below ground) of Some Representative 

 Forest Communities in Maine^ 



Forest communities 



Biomass 

 ("metric tons/ha) 



Immature (regenerating) 



Softwood 



Mixed 

 Hardwood 



Second growth 



Softwood 



Mixed 



Hardwood 



54 

 29 

 58 



175 

 141 

 125 



Mature 



Softwood 



Mixed 



Hardwood 



188 

 175 

 157 



^Young et al . 1976. 



Table 9-7. The Percentage Contribution of Commercial, Noncommercial and 

 Shrub Species to the Biomass of Maine Forests 



Forest component 



Diameter Breast Height 

 <5 feet >5 feet 



Commercial tree species 

 Noncommercial tree species 

 Shrubs 

 Totals 



9.7 



1.0 



0.6 



11.3 



87.3 

 1.4 

 0.0 



88.7 



Total 



97.0 



2.4 



0.6 



100.0 



9-15 



10-80 



