36 



BULLETIN" 234, IT. S. DEPARTMENT OF AGRICULTURE. 



Table 17. — Classification of the land and timberland on the Bernice division, Deerlodge 

 National Forest, Mont. — Continued. 



PRODUCTIVE TIMBERLAND. 



Area 



and 



yield. 



Percent. Area. 



Percent. 



Merchantable 



Age classes — 



Over 200 years. 

 1 60-200 years... 

 120-160 years... 



Total 



Types— 



Lodgepole pine 



Douglas fir 



Engelmann spruce . 



Total 



Stand by species— 



Lodgepole pine 



Douglas fir 



Engelmann spruce. 

 Miscellaneous 



Total green . 

 Dead 



Immature 



Age classes — 

 10 years.. 

 20 years.. 

 30 years.- 

 40 years.. 

 50 years. - 

 60 years.. 

 70 years.. 

 80 years. . 

 90 years.. 

 100 years . 

 110 years. 



Total.. 

 Suppressed 



Total. 



Acres. 



474 



2,844 



14,443 



16,080 



1,526 



155 



17,761 

 1,000 b.f. 



74,583 

 9,850 

 7,051 

 1,347 



92,831 



8,749 



Acres^ 



1,570 

 9,742 

 5,511 

 7,559 

 1,412 

 4,887 

 1,928 

 2,448 

 2,092 

 3,040 

 396 



40,585 



2.7 

 16.0 

 81.3 



100.0 



90.0 

 8.6 

 0.8 



100.0 



80.4 



10.6 



7.5 



1.5 



100.0 



3.9 

 24.0 

 13.6 

 18.6 

 3.5 

 12.0 

 4.8 

 6.0 

 5.1 

 7.5 

 1.0 



100.0 



Acres. 

 17,761 



64.9 



4,145 



6.6 



62, 491 



100.0 



Table 18. — Real and normal growing stock and periodic annual increment on the Bernice 

 division, Deerlodge National Forest, Mont. 



10 years 



20 years 



30 years 



40 years 



50 years 



60 years 



70 years 



80 years 



90 years 



100 years 



110 years 



Over 120 (average age 130 

 years): 



Merchantable 



Suppressed 



Total 



Area. 



Acres. 

 1,570 

 9,742 

 5,511 

 7,559 

 1,412 

 4,887 

 1,928 

 2,448 

 2,092 

 3,040 

 396 



17,761 

 4,145 



62, 491 



Normal- 

 ity. 



0.67 

 .69 

 .73 

 .66 

 .67 

 .49 

 .40 

 .30 

 .20 

 .20 

 .20 



Growing stock. 



Real. Normal. 



1,000 



cu.ft. 



95 



1,815 



2,293 



5,687 



1,731 



5,747 



2,267 



2,468 



1,582 



'J. tM 



342 



28, 671 

 1,890 



57,069 



1,000 



cu. ft. 



402 



1,205 



2,544 



5, ON!) 



8, 168 



10,713 



13, 123 



1 1,998 



16.S72 



18,211 



19,283 



61,062 



171,670 



Periodic annual 

 increment. 



Real. Normal, 



57 



901 



1,000 



1,000 



cu. ft. 



CXI. ft. 



9 



40 



121 



80 



121 



134 



284 



254 



65 



308 



136 



254 



42 



241 



31 



187 



18 



187 



IS 



134 



2 



107 



2,073 



Yield at 



the age 

 of 140 

 years. 1 



1,000 



bd. ft. 



16,662 



L06, I7ti 



83, 148 



78, '.i'3) 



l.-,,0.-)S 



38,090 



12,215 



1 1 . 633 



6,628 



9,631 



1,254 



1 Normal yield, 15,S40 board feet, at 1 40 years on sites of average quality; 78.7 per cent of area overstocked; 

 20.5 per cent of area understocked; 0.8 per cent of area normally stocked. 



