58 



TIMBER TRENDS IN THE UNITED STATES 



PULPWOOD CONSUMPTION 



1751- 



150 - 



125 - 



o 



100 



E 75 



50 



25 



Net Imports 

 Plant Byproducts 

 Hardwood Roundwood 

 Softwood Roundwood 



Projections 



K 



1920 1930 1940 1950 1960 1970 1980 1990 2000 



Figure 26 



manufacturing plants in 1962 amounted to an 

 estimated 4.5 million cords of softwoods and 2.3 

 million cords of hardwoods. Unused sawdust 

 and other fine residues were equivalent to an 

 additional 7.3 million cords of softwoods and 2.9 

 million cords of hardwoods. 



Although not all of these residues can be con- 

 sidered as economically available for pulping, 

 some increase in use of available residues is 

 considered likely, partly because of continuing 

 integration and larger producing units in the 

 wood-using industries. Also, a larger production 

 of residues is anticipated with the projected 

 increases in output of lumber, veneer, and ply- 

 wood, and reduced use of slabs, sawdust, and 

 other materials for fuel. A rise in the use of 

 plant byproducts by the pulp industry to 20 

 million cords in 2000 has therefore been assumed. 



Projected demands for domestic round pulpwood 

 in 2000 thus amount to 105.5 million cords, or 

 slightly more than three times the consumption 

 in 1962. 



Hardwoods Projected From 26 Percent of 

 Total Round Pulpwood to 40 Percent by 2000 



Softwoods composed about 74 percent of the 

 round pulpwood produced in the United States in 

 1962, and most of the plant byproducts used for 

 pulp. The percentage of hardwoods has been 

 steadily growing, however, rising from 11 percent 

 of the total round pulpwood produced in 1940 

 to 26 percent in 1962. 



Improvements in pulping processes, the avail- 

 ability of large volumes of hardwoods at relatively 

 low cost per ton of fiber, and the improvement of 

 many gi'ades of paper with addition of hardwood 

 pulps have all favored use of an increasing variety 

 of hardwood species. Further expansion in use 

 of hardwoods has been assumed, rising to an 

 estimated 40 percent of the total round pulpwood 

 output in 2000. 



an 



