APPENDIX — CRITERIA FOR RATING PRODUCTIVITY 



701 



Table 113. — Minimum number of trees per acre and maximum distances from observation point used in classifying existing 

 stocking, by forest type group and subregion, Southern Rocky Mountain Region 





Ponderosa pine 



Ponderosa pine 



Lodgepole pine 

 type group ' 

 (entire region) 



Hardwoods type 



group— aspen 



type (entire 



region) 



Fir-spruce type group 



Age or size of estab- 

 lished seedling or 

 sapling and crop 



and Douglas-fir 



type groups 



(western 



Nevada) 



type group 



(entire region 



e.xcept western 



Nevada) 



Utah, Arizona, 



New Mexico, 



Colorado, south 



of Gunnison River 



Colorado, north 



of Gunnison 



River 



Western 

 Nevada 



tree d. b. h. 



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 



Trees 

 per 

 acre 



Maxi- 

 mum 

 distance 

 from 

 point 



1 year to 6 in. high 



6 in. high to 4.5 in. 

 d. b. h 



Number 

 1,000 



500 



Feet 

 5.3 



5.3 



Number 



Feet 



Number 



Feet 



Number 



Feet 



Number 



Feet 



Number 



Feet 



Number 



Feet 

















































1,000 



3.7 



4.6in.d. b. h. to8.5in. 

 d. b. h 



250 



7.4 

























4.6in. d.b. h. to9.5in. 

 d. b. h 























500 



5.3 



Seedling toO.5 in. d.b.h 















1,000 



3.7 













Seedling to 1.0 in. d.b.h 







500 



5.3 



















Seedling to 4 in. d.b.h_ 

 Seedling to 5 in. d. b. h_ 

 Seedling to 6 in d b h 



1,000 



3.7 

































""""soo' 



5."3" 



1,000 



3.7 











1 in. d b. h 















900 

 800 



3.9 



4.1 











2 - --- 















2 and 3 







250 



7.4 



















3 - - 











700 

 600 

 440 



360 

 280 

 230 

 180 

 150 

 110 



80 

 60 

 48 



4.5 

 4.8 

 5.7 



6.2 

 7.1 

 7.7 

 8.8 

 9.6 

 11.2 



13.2 

 15.2 

 17.0 















4 







218 

 171 



139 

 114 

 104 



82 



70 



62 



48 

 38 

 32 

 29 

 24 

 20 



18 



16 



14 



13 



11.4 



10.7 



9.6 



8.7 



8 

 9 



10 

 11 

 12 

 13 

 14 

 15 



17 

 19 

 21 

 22 

 24 

 26 



28 

 29 

 31 

 33 

 35 

 36 



38 

 40 



















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 















6 











560 



5.0 







7 















g 







280 



7.1 



315 



6.6 







g 



215 

 174 

 121 



89 

 68 

 54 

 44 

 36 

 30 



26 

 22 

 19 

 17 

 15 

 13 



12 

 11 



8 



8.0 

 8.9 

 10.7 



12.5 

 14.3 

 16.1 

 17.1 

 19.6 

 21.5 



23.1 

 25.1 

 27.0 

 28.6 

 30.3 

 32.6 



34.0 

 35.5 

 41.6 







10.. 



180 

 125 



92 

 70 

 56 

 45 

 37 

 31 



27 

 23 

 20 

 18 

 16 

 14 



12 

 11 



8.8 

 10.6 



12,4 

 14.0 

 15.8 

 17.6 

 19.4 

 21.0 



22.8 

 24.6 

 26.3 

 28.1 

 29.8 

 31.6 



33 

 35 



202 

 141 



103 

 79 

 62 

 50 

 43 

 35 



30 

 25 

 22 

 20 

 17 

 16 



8.3 

 10.0 



11.6 

 12.9 

 15.0 

 16.8 

 18.0 

 19.8 



22.3 

 23.6 

 25.1 

 26.4 

 28.5 

 29.4 



278 

 194 



143 

 109 

 86 

 70 

 58 

 49 



41 

 36 

 31 

 27 

 24 

 22 



7.0 



12 



8.5 



14 .- 



9.9 



16.- 



11.3 



18 . . 



12.7 



20 



14.1 



22 







15.5 



24 











16.9 



26 











18.3 



28 











19.7 



30 











21.1 



32 











22.5 



34 











23.9 



36 











25.4 



38 













40 



















40-50 













































' Overstocking was considered the equivalent of nonstocking under the 

 following conditions: (a) 20 or more seedlings 4 inches to 12 inches high per 



milacre quadrat; (b) 10 or more trees 12 inches high to 1 inch Id. b. h. 

 milacre quadrat. 



per 



