260 



TIMBER RESOURCES FOR AMERICA'S FUTURE 



Table 149. — Proportion of recently cut lands in the United States and Coastal Alaska in the upper productivity class and 

 deductions > for rating elements, by ownership class and forest type group, 1953 ^ 



Forest type group 



Small private ownerships 



Operating 



area 



Proportion 



in upper 



class 



Deduction for- 



Stocking 



Composi- 

 tion 



Premature 

 cutting 



Medium and large private ownerships 



Operating 

 area 



Proportion 



in upper 



class 



Deduction for- 



Stocking 



Composi- 

 tion 



Premature 

 cutting 



East: 



White-red-jack pine..- 



Spruce-fir 



Loblolly-shortleaf pine 



Longleaf-slash pine 



Oak-pine 



Oak-gum cypress 



Oak-hickory ___ 



Elm-ash-cottonwood- - 



Maple-beeeh-birch 



Aspen-birch 



West: 



Douglas-fir 



Hemlock-Sitka spruce- 

 Redwood 



Ponderosa pine 



Western white pine. . . 



Lodgepole pine.. 



Larch .._ _ 



Fir-spruce 



Hardwoods 



All types.. - 



Million 

 acres 



2.17 

 2.28 



21.65 

 7.63 

 4.13 

 4.05 



17.30 



.56 



5.37 



1.65 



3.69 

 .28 

 .16 



2.41 

 .17 

 .33 

 .21 

 .11 

 .02 



Percent 

 35 

 42 

 36 

 29 

 43 

 26 

 40 

 37 

 67 

 74 



56 

 64 

 75 

 29 

 27 

 65 

 76 

 32 

 50 



Percent 

 46 

 31 

 51 

 61 

 47 

 51 

 34 

 24 

 14 

 26 



36 

 26 

 25 

 54 

 73 

 20 

 21 

 55 

 27 



Percent 

 7 

 6 

 2 

 1 

 2 

 13 

 14 

 35 



Percent 

 12 

 21 

 11 



9 



8 

 10 

 12 



4 

 11 







6 

 5 

 

 8 

 

 14 

 

 

 



Million 

 acres 



0.57 



8.16 



11.09 



12.07 



1.42 



5.60 



4.95 



.02 



5.83 



.71 



5.39 

 1.75 

 .72 

 4.31 

 .47 

 .36 

 .68 

 .85 



Percent 

 79 

 73 

 81 

 75 

 68 

 55 

 59 

 100 

 71 

 95 



83 

 95 

 90 

 72 

 31 

 96 

 34 



Percent 

 11 

 12 

 15 

 24 

 24 

 37 

 23 

 



Percent 

 9 

 

 1 

 1 

 1 

 7 



12 

 



12 

 



1 

 

 

 3 

 1 

 

 59 

 



Percent 



74.17 



40 



64.95 



73 



Forest type group 



East: 



White-red-jack pine... 



Spruce-fir 



Loblolly-shortleaf pine 



Longleaf-slash pine 



Oak-pine 



Oak-gum cypress 



Oak-hickory 



Elm-ash-cottonwood- - 



Maple-beech-birch 



Aspen-birch 



West; 



Douglas-flr 



Hemlock-Sitka spruce- 

 Redwood 



Ponderosa pine 



Western white pine. . . 



Lodgepole pine. 



Larch- 



Fir-spruce--- 



Hardwoods 



\\\ types- 



Public ownerships 



Operating 

 area 



Million 

 acres 



2.70 

 4.32 

 3.73 

 2.71 

 1.61 



.47 

 7.54 



.23 

 4.73 

 6.65 



14.02 



5.43 



.07 



21.74 



1.84 



8.28 



2.71 



6.60 



.38 



95.76 



Proportion 



in upper 



class 



Percent 



93 

 91 



60 

 85 

 42 

 94 

 85 



79 

 90 

 100 

 79 

 16 

 90 

 42 

 72 

 77 



80 



Deduction for— 



Stocking 



Percent 



20 



11 



5 



5 



3 



32 



11 



34 



4 



10 



20 

 10 





 19 

 83 



8 

 52 

 26 

 23 



16 



Composi- 

 tion 



Percent 

 12 

 9 

 

 2 

 6 

 4 

 3 

 24 

 2 

 5 



1 

 

 

 2 

 1 

 2 

 6 

 2 

 



Premature 

 cutting 



Percent 

 

 3 

 5 

 

 

 4 

 1 

 

 

 





 

 

 

 

 

 

 

 



1 



All ownerships 



Operating 

 area 



Million 

 acres 



5.44 

 14.76 

 36 47 

 22.41 



7.16 



10.12 



29.79 



.81 



15.93 



9.01 



23.10 



7.46 



.95 



28.46 



2.48 



8.97 



3.60 



7.56 



.40 



234.88 



Proportion 



in upper 



class 



Percent 

 56 

 69 

 55 

 62 

 59 

 44 

 54 

 40 

 76 

 84 



77 

 90 

 88 

 73 

 20 

 89 

 43 

 73 

 75 



65 



Deduction for- 



Stocktng 



Percent 

 29 

 15 

 35 

 34 

 32 

 42 

 27 

 26 

 9 

 12 



21 

 10 

 12 

 23 

 79 

 8 

 41 

 25 

 24 



26 



Composi- 

 tion 



Percent 

 10 

 4 

 2 

 1 

 3 

 9 

 11 

 31 

 8 

 4 



1 

 

 

 3 

 1 

 2 

 16 

 2 

 1 



Premature 

 cutting 



Percent 



' Boldface figures indicate deductions exceeding the national average 

 deduction for each element. National averages are stocking, 26 percent; 

 composition, 4 percent; premature cutting, 5 percent. 



' Computed from appcndi.\ table 77, appendix section Basic Statistics. 

 Figures show the deductions in proportion of area in the upper class due to 

 standards for each rating element not being met. For example, table 77 of 

 the Basic Statistics shows that 54 percent of recently cut lands in the white- 

 red-jack pine type group on small private o\vnerships met upper stocking 

 standards. Thu.s, 46 percent of such lands did not meet such standards and 



is the deduction. Further, table 77 shows that when effects of composition 

 were considered, the proportion of area in the upper productivity class 

 changed from 54 percent to 47 percent, a loss of 7 percent due to failure to meet 

 composition standards. When premature cutting was considered, the pro- 

 portion of area in the upper productivity class changed from 47 percent to 

 35 percent, a loss of 12 percent due to premature cutting. These losses or 

 deductions allow direct comparisons of the relative importance of the elements 

 by forest type groups and ownership classes. 



