BULLETIN 1003, U. S. DEPARTMENT OF AGRICULTURE. 

 Table 3. — Practical application of Table 1. 





Area. 



Vol- 

 ume 

 per 

 acre. 



Trees 



24 



inches 



and 



over. 



Aver- 

 age di- 

 ameter 

 stump 



high. 



Stumps per acre equivalent. 



Location. 



24- 

 inch. 



33- 

 inch. . 



35- 

 inch. 



43- 

 inch. 



49- 

 inch. 



T4N, R18E, sec. 19 



T9 S, R 24 E, sec. 2 



Acres. 



7 



16 



16 



16 



16 



17, 495 



6,393 



3,820 



300 



Bd. ft. 



35,490 



10, 700 



9,746 



11,000 



13, 112 



12, 200 



6,710 



6,770 



8,139 



500 

 .25 



9.1 

 6.6 

 5.5 

 4.0 



4.7 



1,000 

 .50 



Inches. 

 48.0 

 34.5 

 32.0 

 43.5 

 43.5 

 33.0 

 32.5 

 33.5 

 33.0 



1,500 

 .75 



70.9 

 21.4 

 19.5 

 22.0 

 26.2 

 24,4 

 13 4 

 13.5 

 16.2 



2,000 

 1.0 



23.6 

 7.1 



6.5 

 7.3 



8.7 

 8.1 

 4.5 

 4.5 

 5.4 



2,500 

 1.25 



20.3 

 6.1 



12.8 



8.8 



T 9N, R 24 E, sec. 1 







T8N, R23E, sec. 15 



T4N, R21E,sec.32 



TlOandllS, R25and36E . 





4.0 



4.7 





T 4 and 5 S , R 20 and 21 E . . . 









T 3 and 4 S, R 19 E 









T7S, R22E 









Volume equivalents: 



3,000 

 1.50 



3,500 

 1.75 



4,000 







2.00 











OR 



EGON 



AND WASHINGTON. 









Oregon. 



Washington. 















10, 000, 000 

 70,000,000,000 



3,400,000 













irdfeet. 

 do... 

 do... 



acres . 



17,000,000,000 



5,000 



220, 924, 000 



44,185 



110,462 



Volume per acre 



Total annual cut (1917) 



Total area annually cleared (1 

 Total annual volume of stum 



917) 









7, 000 



1 470,488,000 



67, 212 



235, 244 



Western yellow pine occurs on about 14,000,000 acres in Oregon, 

 practically a quarter of the State and half of its timbered land. Of 

 this area about 10,000,000 acres may be classed as commercial forest, 

 the estimated stand amounting to 70,000,000,000 board feet, or an 

 average of 7,000 board feet an acre, interforest waste areas in- 

 cluded (6). 



Table 4. — Representative western yellow-pine stands in Oregon. 



Location. 



Near Austin and Whitney 

 Near Lookingglass Creek . . 

 Near Embody 



Klamath Lake Section 



Area. 



Acres. 



258 



44 



30 



159 



Average number of trees. 



12-inch 

 and over. 



25.42 

 34.57 

 32.00 

 25.37 



18-inch 

 and over. 



18.97 

 21.34 

 21.23 

 19.85 



24-inch 

 and over. 



13.78 

 15.48 

 15.10 

 15.41 



Per cent 

 of stand. 



83.2 

 87.3 

 99.5 

 75.2 



Table 4 shows average stands of Oregon' yellow pine more or less 

 mixed with other timber. Pure stands contain a proportionately 

 greater number of trees. In cruises made by the United States 

 Geological Survey, on pure, heavy stands of yellow pine near Rich- 

 land, the average number of trees above 12 inches on strip acres 

 ran from 30 to 43, and of those above 22 inches, from 15 to 24. 

 The timber on these strips, running about 10,000 feet an acre, will 

 yield approximately 5 cords of stumpwood an acre. 



