620 



TIMBEil RESOURCES FOR AMERICA'S FUTURE 



Table 77. 



-Productivity of recently cut commercial forest land in the United States and Coastal Alaska, by region, forest type 

 group, ownership class, and elements of the combined productivity class, 1953 ' — Continued 



NORTHERN ROCKY MOUNTAIN 



Forest type group and 

 ownership class 



Operating 

 area 



Productivity 



By combined produc- 

 tivity class 



Upper 



Medi- 

 um 



Lower 



By existing stocking, all 

 species 



Upper 



Medi- 

 um 



Lower 



By existing stocking 

 plus prospective 

 stocking, all species ' 



Upper 



Medi- 

 um 



Lower 



Existing and prospec- 

 tive stocking modi- 

 fied by composition 



Upper 



Medi- 



Lower 



Proportion 

 of total 

 on which 

 felling age 

 factors 

 were ap- 

 plied 



Small private omierships 

 (10 to 5,000 acres); 



Douglas-fir 



Ponderosa pine 



Western white pine 



Lodgepole pine 



Larch 



Fir-spruce 



Medium and large private 

 ownerships (5,000 acres 

 and larger) : 



Douglas-fir 



Ponderosa pine 



Western white pine 



Lodgepole pine 



Larch 



Fir-spruce 



Public ownerships: 



Douglas-fir 



Ponderosa pine 



Western white pine 



Lodgepole pine 



Larch 



Fir-spruce 



Thousand 



acres 



308 



572 



166 



61 



209 



12 



350 



Per- 

 cent 

 25 

 14 

 25 



76 



373 



334 



617 



80 



4,894 

 4,222 

 1,579 

 5,838 

 2,175 

 2,148 



Per- 

 cent 

 60 

 58 

 58 

 51 

 24 

 100 



Per- 

 cent 

 15 

 28 

 17 

 49 



Per- 

 cent 

 19 

 3 

 25 

 5 

 65 



32 



{') 



Per- 

 cent 

 52 

 85 

 58 

 95 

 32 

 100 



Per- 

 cent 

 29 

 12 

 17 



Per- 

 cent 

 27 

 42 

 25 

 5 

 79 



Per- 

 cent 

 70 

 57 

 58 

 95 

 21 

 100 



Per- 

 cent 

 3 

 1 

 17 



Per- 

 cent 

 27 

 22 

 25 



76 



16 



(') 



Per- 

 cent 

 70 

 66 

 58 

 51 

 24 

 100 



Per- 

 cent 

 3 

 12 

 17 

 49 



Percent 



SOUTHERN ROCKY MOUNTAIN 



Small private ownerships 

 (10 to 5,000 acres): 



Douglas-fir 



Ponderosa pine 



Lodgepole pine 



Fir-spruce 



Hardwoods 



Medium and large private 

 ownerships (5,000 acres 

 and larger) : 



Douglas-fir 



Ponderosa pine 



Lodgepole pine 



Fir-spruce 



Public ownerships; 



Douglas-fir _ 



Ponderosa pine 



Lodgepole pine 



Fir-spruce 



Hardwoods 



34 

 241 

 233 



23 



23 



24 

 213 



158 

 7,136 

 1,666 

 2,746 



376 



9 

 29 

 78 

 17 

 100 



100 

 57 



100 

 82 



100 

 71 

 96 

 91 



77 



91 

 52 

 22 

 83 



19' 



6 

 20 



94 

 33 

 29 

 96 

 100 



83 

 70 

 33 

 26 



41 

 56 

 40 

 64 

 63 





4 







17 

 9 



27 



16 



18 





56 



59 

 31 

 31 

 36 

 37 



25 

 4 

 8 



23 



4 



(') 

 1 



17 

 100 



100 

 57 



100 

 82 



100 

 73 



21 





55 



15 



2 





83 





27' 



16" 



18 





24 



3 



2 





6 





23 





79 



21 



29 



52 



98 



2 



17 



83 



100 









100 

 57 



100 

 82 



100 

 71 

 96 

 91 



77 



23 



P) 



COASTAL ALASKA 



Public ownerships; 

 Hemlock-Sitka spruce 



4,224 



89 



11 





87 13 





89 



11 





89 



11 













ALL REGIONS 



Small private ownerships 

 (under 5,000 acres) ; » 



Eastern type groups: 



White-red-jack pine 



Spruce-fir 



Longleaf-slash pine 



LobloUy-shortleaf pine. - 



Oak-pine 



Oak-hickory 



Oak-gum-cypress 



Elm-ash-cottonwood 



Maple-beech-birch 



Aspen-birch 



Western type groups; 



Douglas-fir 



Hemlock-Sitka spruce. . . 



Redwood 



Ponderosa pine. 



Western white pine 



Lodgepole pine.. 



Larch __ 



Fir-spruce.. 



Hardwoods 



2.174 

 2,281 

 7,635 



21,654 

 4,133 



17, 305 



4,045 



560 



5,366 



1,645 



3,694 

 280 

 161 



2,409 

 171 

 325 

 209 

 105 

 22 



Sec footnotes at end of table. 



