APPENDIX CRITERIA FOR RATING PRODUCTIVITY 



Table 108. — Classification of species according lo forest type group,^ Northern Rocky Mountain Region 



697 





Western white pine 



Ponderosa 

 pine 



Larch 



Douglas- 

 fir 



Spruce-fir 



Lodgepolo pine 





Species 



Inside 

 blister 

 rust 

 control 

 units 



Outside 



blister 



rust 



control 



units 



Low ele- 

 vation 

 western 

 Montana 



and 



northern 



Idaho 



Region- 

 wide - 



Low ele- 

 vation 

 western 

 Montana 



and 



northern 



Idaho 



High ele- 

 vation 

 western 

 Montana 



and 



northern 



Idaho 



Southern 

 Idaho 

 and 

 Wyo- 

 ming, 

 west of 

 Divide 



Wyo- 

 ming, 

 east of 

 Divide 



Ponderosa 



pine 



(Black 



Hills) 



Douglas-fnr 



A 



D 



A 



A 



D 



A 



A 



3 A 



D 



A 



3 A 



D 

 A 

 A 







Fir, alpine,.- 



A 





Fii, grand,. . 



A 

 ' A 

 A 

 A 

 A 



5 



D 





A 



A 



A 







Hemlock, western .. . 















Larch, western. _. . . 



D 

 A 

 A 



«D 

 D 



D 



A 

 D 



6 A 

 A 



D 

 A 

 A 



6 A 

 A 



D 

 A 

 D 

 9 A 

 -\ 



^D 

 A 



A 

 D 



D 



A 

 D 



«A 





D 

 D 

 D 







Pine, lodgepole, .- 



D 



D 





Pine, ponderosa 



D 



Pine, western white 



6D 



D 











Redcedar, western 













Spruce, black hills _ 













A 



Spruce. Engelmann . . 



A 



: A 



D 



'A 



A 



D 



A 



D 



D 



A 



A 



D 



D 





Hardwoods .... 



























A = Acceptable. D = Desirable. 



I Aspen type; all species in type were desirable. 



- In southern Idaho and in Wyoming, west of Continental Divide, any 

 species of marketable quality in the immediate locality, e.xcept limber and 

 whitebark pine, was considered desirable. 



3 Considered acceptable only where reserved for watershed protection. 



* Considered acceptable where reserved for shade in Ribes control. Other- 

 wise, noncount. 



' On moist areas near stream bottoms and meadows where water is close to 

 the ground surface, larch was classified as acceptable because in such situa- 

 tions it suffers from disease. 



* Western white pine under 12 inches d. b. h. was not counted outside of 

 blister rust protection units because survival in such situations is highly 

 questionable. When trees over 12 inches d. b. h. were found, they were 

 classified as shown in the table. 



' Cottonwood was considered acceptable in localities where it was being 

 utilized; otherwise, noncount. 



/ 



7 



Tabi,e 109. — Minimum nutnber of trees per acre and maximum distances from observation point used in classifying existing 



stocking, hy type group, Northern Mountain Region 



-Age or size of established 

 seedling or sapling and crop 

 treed, b. h. 



Ponderosa pine, 

 western larch, 

 and Douglas-fir 

 type groups ' 



Spruce-fir type 

 group (high ele- 

 vation, Montana 

 and northern 

 Idaho) 



Spruce-fir (low ele- 

 vation western 

 Montana, Idaho, 

 and western 

 Wyoming) or 

 western white 

 pine type groups 



Lodgepole pine 

 type group ' 



Ponderosa pine 

 type group 

 (Black Hills) 



Hardwoods type 

 group — aspen 

 type 





Trees 

 per 

 acre 



Maxi- 

 mum 

 distance 

 from 

 point 



Trees 

 per 

 acre 



Maxi- 

 mum 

 distance 

 from 

 point 



Trees 

 per 

 acre 



Maxi- 

 mum 

 distance 

 from 

 point 



Trees 

 per 

 acre 



Maxi- 

 mum 

 distance 

 from 

 point 



Trees 

 per 

 acre 



Maxi- 

 mum 

 distance 

 from 

 point 



Trees 

 per 

 acre 



Maxi- 

 mum 

 distance 

 from 

 point 



1 year old to 2.5 in. d. b. h 



1 year old to 0.5 ft. high 



1 year old to 4.5 in. d. b. h 



Number 



"'"i.'ooo 



Feet 

 ---- 



Number 



'"""J,"oo6" 



Feel 

 5.3" 



Number 



Feet 



Number 



Feet 



Number 

 1,000 



Feet 

 2 3.7 



Number 

 1,000 



Feet 

 3.7 



1,000 



3.7 



1,000 



2 3.7 











0.5 ft. high to 4.5 in. d. b. h... 

 4.6 in. to 8.5 in. d. b. h 



500 

 250 



5.3 

 7.4 



500 



5.3 



























4.6 in. to 9.5 in. d b. h 



250 



7.4 







500 



5.3 















1 in. d. b. h 















900 

 800 

 700 

 600 

 440 



360 

 280 

 230 

 180 

 150 



110 

 80 

 60 

 48 



3.9 



2 . 























4.1 



3 



















800 

 680 

 555 



435 

 325 

 220 

 185 

 155 



125 

 90 

 55 

 4fi 

 38 



30 



4.2 

 4.5 

 5.0 



5.7 

 6.5 

 7.9 

 8.7 

 9.5 



10.5 

 12.4 

 15.9 

 17.4 

 19.1 



21.5 



4.5 



4 - - 



















4.8 



5 















941 



653 

 479 

 367 

 290 

 235 



163 

 120 

 92 

 72 

 59 



3.8 



4.6 

 5.4 

 6.2 

 6.9 

 7.7 



9.2 

 10.8 

 12.3 

 13.8 

 15.3 



5.7 



6 















6.2 

















7.1 



8 















7.7 



9 



215 



174 



121 

 S9 

 68 

 54 

 44 



36 

 30 

 26 

 22 

 19 



17 

 15 

 13 

 12 

 11 

 8 



8.6 

 8.9 



10.7 

 12.5 

 14.3 

 16.1 

 18.1 



19.6 

 21.5 

 23.1 

 25.1 

 27.0 



28.6 

 30.3 

 32.6 

 34.0 



35.5 

 41.6 











8.8 



10 . . 



202 



141 

 103 

 79 

 62 

 50 



43 

 35 

 30 

 25 

 22 



20 

 17 

 16 



8.3 



9.9 

 11.6 

 13.2 

 14.9 

 16.6 



18.2 

 19.8 

 21.5 

 23.2 

 24.8 



20.5 

 28.2 

 29.8 



278 



194 

 143 

 109 

 86 

 70 



58 



36 

 31 



27 

 24 

 22 



7.0 



8.5 

 9.9 

 11.3 

 12.7 

 14.1 



15.5 

 16.9 

 18.3 

 19.7 

 21.1 



22.5 

 23.9 

 25.4 



9.6 



12 



11.2 



14 



13.2 



16 . 



15.2 



18 



17.0 



20 





22 







24 











26 















28 















30 















32 















34 















36 















38 















40 























40-f- 













































' Understory larch and Douglas-flr trees and lodgepole pine that occurred 

 in the immediate vicinity or within 40 feet of mistletoe-infected overstory 

 trees were not counted. 



2 Points were considered seriously overstocked and disqualified from the 

 count when the following conditions prevailed: (a) 20 or more seedlings 1 year 

 old to 1 foot high per milacre quadrat; (b) 10 or more seedlings 1 foot high to 

 1 inch d. b. h. per milacre quadrat. 



