As a result of field classification and meas- 

 urement, nine of the locations on the Gifford 

 Pinchot Working Circle were classed as non- 

 commercial. The area associated with these was 

 taken out of the "apparent commercial forest 

 land class" and combined with the "obvious 

 noncommercial" to arrive at total noncom- 

 mercial. This resulted in area estimates by 

 broad land class as follows: 



Land class Acres 



Apparently commercial 1,009,230 



Noncommercial 106,280 



Nonforest . 45,910 



Total 1,161,420 



Because the sample was so small, it was not 

 possible to further stratify the "apparent com- 

 mercial forest" by land type and use on a sam- 



The results of the 1969 inventory 

 as follows: 



Land class 



Category A (commercial): 

 Full yields expected 

 Modified yields expected 

 Total — Category A 



Category B (marginal): 



Total — Timber Growing Base 



pie basis. This was done by using soil-hydro logy 

 maps and multiple use maps with stand or type 

 maps. The samples were used only to identify 

 the categories of land in which to make the 

 correction for field location classification. To 

 illustrate, four of the field locations reclassified 

 from commercial to noncommercial in the field 

 were on forest land mapped as marginal for tim- 

 ber use. The correction for area associated with 

 these four locations was therefore carried into 

 this category . 



Area estimates were made utilizing maps. 

 One set of maps showed forest land considered 

 marginal for timber use because of problems of 

 access and timber growing problems. Another 

 set of maps showed land in management units 

 as follows: ( 1 ) under study to determine proper 

 land use (deferred); (2) unavailable for timber 

 use; and (3) available for timber use under 

 modified management with partial yields 

 expected. 



summarized, and using study criteria, are 

 Area in acres 



649,064 

 141,611 



790,675 



130,952 

 921,627 



Category C (noncommercial): 

 Unproductive forest land 

 Unavailable productive forest land: 

 Experimental forest 

 Developed camps & administrative sites 

 Devoted to other uses 

 Total - Category C 



Category D (deferred): 



NONFOREST LAND 

 TOTAL ALL LAND 



106,280 



9,899 

 4,853 

 53,540 



174,572 



19,311 



45,910 

 1,161,420 



31 



