Treatment Code Definitions 



Table 29 lists the treatment opportunities and their code numbers. The 

 list is divided into three groups. The first consists of the individual treat- 

 ments, the other two list possible combined treatments, which are of two 

 types: those that do not overlap and those that may. The combined codes 

 listed under the "possible overlap" group represent treatments that may 

 overlap each other during actual treatment. For example, the combined 

 treatment code 13, 20, 22 suggests that a certain stand needs a treatment, or 

 treatments, that will remove the overstory (13), precommercially thin (20), 

 and sanitize the stand (22). Two or more of these needs might be met in one 

 step. Sanitation may be partially met by precommercial thinning, or it may 

 be partially or completely met by removing the overstory. 



Understanding that some treatments may be handled simultaneously is 

 important when allocating funds, equipment, and manpower for timber stand 

 improvement projects. Estimates of costs and work loads may be reduced for 

 acreages on which treatments may overlap. 



For further information about the kinds of stands represented by each 

 treatment code, see Appendix 5. 



Treatment Opportunities by Ownership Group and Site Class 



Five codes indicate no immediate treatments are needed. These are: (11) 

 and (15) harvest - low risk, (30) no treatment due to productive condition, 

 (33) no treatment - deferred until merchantable, and (40) unknown - poor 

 crowns, good growth. In Working Circle 3, approximately 354,800 acres, or 

 about 32 percent of the commercial softwood timberlands, were placed into 

 these treatment categories (see Table 30). An additional 207,900 acres were 

 placed into harvest - high risk. The remaining 540,200 acres, or 49 percent 

 of the commercial softwood timberlands, were placed into categories that imply 

 silvicultural treatment opportunities are available. If stands in the harvest - 

 high risk category (10) and (14) are added, the total amount of commercial 

 softwood timberland that could use some type of silvicultural treatment be- 

 comes 748,100 acres, or 68 percent of all softwood timberlands inventoried. 



-61- 



