WESTEKN YELLOW PINE IN OREGON. 



25 



From these tables it is possible to determine what height and what 

 diameter a yellow pine may be expected to reach in 50, 100, or 150 

 years mider each of the several sets of conditions which each locaUty 

 typifies. These data were of course collected in virgin forests. A 

 comparison of the growth of the present yoimg trees with the growth 

 of the old trees when they were young, and of the growth of trees 

 of various sizes, indicates that the young, thrifty trees now are 

 growing at the same rate that their parent trees did when they were 

 of the same age. It is fair to assume, therefore, that future growth 

 in the natural forest will be at the same rate. 



Table 9.— Average total height of yellow-pine trees at various ages for 13 typical stands 

 in several localities in Oregon. 



Locality. 



Basis: 

 Num- 

 ber of 

 trees. 



Age of trees in years. 



50 100 150 200 250 300 330 400 



Total height in feet. 



Austin and Whitney, Grant and Baker 

 Counties ." 



Lookingglass Creek, Union County 



Ochoco Creek, Crook County 



Mill Creek, Crook Comity 



Tamarack Creek, Wasco County 



Metolius Creek, Crook County 



Sisters, Crook County (1) and (2) 



Bend, Crook County 



Lapine, Crook County (1) and (2) 



Lapine, Crook County (3) 



Fort Klamath, Odessa, Meadow Lake, and 

 Keno, Klamath Coimty 



Crystal Creek, Klamath County 



Embody, Lake County 



437 

 588 

 187 

 224 

 125 



36 

 128 



66 

 131 



57 



Total.... 

 Average . 



24 



62 



104 

 79 

 88 

 95 

 95 

 79 

 82 

 81 



92 

 120 



100 

 115 

 93 

 107 

 103 

 113 

 88 

 90 

 99 

 105 



106 

 139 

 91 



90 i 104 



110 

 119 

 101 

 118 

 108 

 124 

 91 

 91 

 111 

 116 



114 

 146 

 97 



115 

 121 

 104 

 124 

 109 

 129 

 92 

 92 

 117 

 122 



118 

 149 

 103 



117 

 122 

 106 

 126 

 109 

 130 

 93 



121 

 125 



121 

 150 

 108 



119 

 123 

 107 

 129 

 109 

 130 

 93 



122 

 126 



124 

 150 

 113 



Table 10. — Average diameters of yellow-pine trees at various ages for 18 typical stands 

 in several localities in Oregon. 



Locality. 



Basis: 

 Num- 

 ber of 

 trees. 



Age of trees in years. 



50 100 150 200 250 300 350 400 



Diameter in inches outside bark at breastheight. 



Austin and Whitney, Grant and Baker 



Counties 



Lookingglass Creek, Union County 



Parker's Mill, Morrow County 



Winlock's Mill, Wheeler County 



Ochoco Creek, Crook (Joiinty 



Mill Creek, Crook County 



Tamarack Creek. Wasco County 



Metolius Creek, Crook County 



Bisters, Crook County (1) 



Bend, Crook County 



Lapine, ( rook County (1) 



La; ine, f rook Countv <?>) 



Fort Klamath, Klamath f;onnty 



Crystal Creek, Klamath f'ounty 



Odessa, Klamath County , 



Mea'iow Lake, Klamath County , 



Keno, Klamath County 



Embody, Lake County 



672 

 409 

 245 

 407 

 474 

 405 

 238 



66 

 267 

 183 

 361 



91 

 110 



87 

 156 

 245 



52 

 400 



4.0 

 6.6 

 3.0 

 2.5 

 4.4 

 4.1 

 5.0 

 4.4 

 3.9 

 4.7 

 2.8 

 3.4 

 5.9 

 10.6 

 4.5 

 5.0 

 5.7 

 3.5 



Total.... 

 Average. 



4,868 



4.7 



10.8 

 14.1 

 10.2 



9.9 

 12.3 

 11.6 

 14.6 

 13.1 

 12.8 

 15.4 



9.0 

 11.5 

 17.1 

 22.2 

 13.9 

 13. 3 

 14.0 

 10.5 



15.7 

 19.4 

 15.8 

 15.2 

 18.2 

 17.6 

 20.5 

 19.1 

 18.6 

 20.7 

 17.9 

 20.2 

 24.3 

 28.5 

 20.0 

 19. 3 

 20.0 

 16.1 



19.3 



19.4 

 22.7 

 20.2 

 19.0 

 22.1 

 22.0 

 24.0 

 23.6 

 22.7 

 24.4 

 23.2 

 26.0 

 28.2 

 33.1 

 23.8 

 23.3 

 23. 5 

 20.1 



23.4 



22.2 

 25.5 

 24.2 

 22.7 

 25.2 

 25.6 

 26.2 

 27.1 

 25. 8 

 27.3 

 27.4 

 29.9 

 31.2 

 37.0 

 26.5 

 20.5 

 26.1 

 23.1 



26.6 



24.4 

 29.0 

 27.8 

 26.4 

 27.8 

 28.4 

 28.1 

 30.0 

 28.8 

 29.9 

 30.6 

 32.8 

 33.8 

 40.7 

 28.8 

 28.8 

 28.3 

 25.5 



26.5 

 32.7 

 30.8 

 30.0 

 29.7 

 30.6 

 29.7 

 32.2 

 31.3 



33.2 

 35. 1 

 36.3 



30.9 

 ,30.7 

 30.1 

 27.8 



31.1 



28.4 

 34.1 

 33.4 

 33.0 

 30.7 

 32.4 

 31.0 

 33.8 

 33.6 



35.5 

 30.7 



33.0 

 32.5 

 31.7 

 29.9 



30.0 



