702 



TIMBER RESOURCES FOR AMERICA'S FDTTJRE 



Table 114. — Percentage oj mean annual growth at culmination attained at various ages, by forest type group 



and subregion, Southern Rocky Mountain Region 





Ponderosa pine 







Age (years) 



Utah and 

 Nevada 



South Colo- 

 rado slope 



West and 

 east slope 



Arizona and 

 New Mexico 



Lodgepoie pjue 

 (Colorado) ' 





Sawtimber 



Sawtimber 



Cordwood 



Sawtimber 



Sawtimber 



Cordwood 



40. --- - . 



Percent 



4 

 15 

 28 

 46 

 60 

 73 

 83 

 90 

 95 

 98 

 100 



Percent 



Percent 



43 



83 



95 



100 



Percent 



Percent 



Percent 



48 



50. 



34 

 52 



68 

 79 

 88 

 93 

 97 

 99 

 100 



18 

 40 

 60 

 75 

 85 

 92 

 96 

 99 

 100 



61 



60 



... 



45 

 60 

 72 

 83 

 90 

 95 

 97 

 98 

 100 



72 



70.. .- ... .- 



81 



80 



88 



90 



95 



100 _ 





100 



110- . _ 





120 ... 





130 



140 





150.. ... 











160 

























' Effect of felling age not considered elsewhere in the lodgepole pine type. 



BIBLIOGRAPHY 



The following references were sources of information in preparing the standards for rating pro- 

 ductivit}^ of recently cut lands. Some of the published data were modified by using more recent in- 

 formation from Forest Service experiment stations and other sources to adapt them to the varied 

 characteristics of the type groups in different parts of the country. A large volume of unpublished 

 material in the files of Forest Service experiment stations was also referred to in preparing standards. 



Existing Stocking 



1. Bruce, Donald. 



preliminary yield tables for second-growth 

 REDWOOD. Calif. Univ. Press Bui. 361. 1923. 



2. Eyre, F. H., and Zehngraff, Paul. 



red pine management in minnesota. u. s. 

 Dept. Agr. Cir. 778. 1948. 



3. Forbes, R. D., and Bruce, Donald. 



rate of growth of second-growth southern pine 

 IN FULL STANDS. U. S. Dept. AgT. Cir. 124. 1930. 



4. Gevorkiantz, S. R., and Guilkey, P. C. 



ALLOWABLE CUT. [Unpublished report on file at the 

 U. S. Forest Serv. Lake States Forest Expt. Sta.] 

 1949. 



5. Haig, I. T. 



SECOND GROWTH YIELD, STAND, AND VOLUME TABLES 

 FOR THE WESTERN WHITE PINE TYPE. U. S. Dept. 



Agr. Tech. Bui. 223. 1932. 



6. Lexen, Bert. 



space requirements of ponderosa pine by tree 

 DIAMETER. U. S. Forest Serv. Southwest. Forest 

 and Range Expt. Sta. Res. Note 63. 1939. 



7. Mason, D. T. 



utilization and management of lodgepole pine 



IN THE ROCKY MOUNTAINS. U. S. Dept. Agr. Bul. 



234. 1915. 



8. McArdle, R. E., Meyer, W. H., and Bruce, 

 Donald. 



the yield of douglas fir in the pacific north- 

 WEST. U. S. Dept. Agr. Tech. Bul. 201. 1930. 



9. Meyer, Walter H. 



YIELD OF even-aged STANDS OF PONDEROSA PINE. 



U. S. Dept. Agr. Tech. Bul. 630. 1934. 



10. MiNCKLER, Leon S. 



CHARACTERISTICS OF UNMANAGED WELL-STOCKED 

 STANDS AND INTERIM STOCKING GUIDES FOR SOME 

 UPLAND CENTRAL HARDWOOD FORESTS. SoC. Amer. 



Foresters Proc. 1950. 



11. Pearson, G. A. 



PONDEROSA PINE MANAGEMENT IN THE SOUTHWEST. 



U. S. Dept. Agr. Monog. 6. 1952. 



12. Pole Blight Investigation Steering Committee. 



pole blight what is known about it. u. s. 



Forest Serv. North. Rockv Mtn. Forest and 

 Range Expt. Sta. Misc. Pub. "4. 1952. 



13. Putnam, J. A. 



CUTTING SCHEDULE FOR EVEN-AGED BOTTOMLAND 



HARDWOODS. Jour. Forestry 50 (11). 1952. 



14. U. S. Forest Service. 



FOREST survey FIELD MANUAL. 1952. 



15. 



16. 



SUGAR PINE DELINEATION MANUAL. 



cessed.l 



[Processed.] 

 1952. [Pro- 



TEST OF VALIDITY OF THE POINT SYSTEM. 1950 Anil. 



Rpt. U. S. Forest Serv. Southwest. Forest and 

 Range E.xpt. Sta. 1950. [Processed.] 

 17. Whitney, C. N. 



normal yield tables — lodgepole pine. u. s. 

 Forest Serv. North. Rocky Mtn. Forest and 

 Range Expt. Sta. 1913. [Processed.] 



