APPENDIX 5. DESCRIPTION OF TREATMENT CODES 



The purpose of this appendix is to define the stand characteristics which 

 make up each of the fourteen categories. In many cases, a stand may receive 

 more than one treatment code. Under each treatment code description below 

 there is a list of the other codes which may occur in combination with the one 

 being described. 



Code 10: Harvest - high risk 



Code 10 includes all commercial, non-vigorous, overmature stands, as 

 well as any merchantable stand which exhibits an unmanageable insect or 

 disease problem. 



Lodgepole sawtimber stands which are over 100 years old are automatical- 

 ly included. 



Possible combinations: None 



Code 11: Harvest - low risk 



This is a diverse category which includes the following types of stands: 



1. All commercial stands older than 100 years which do not qualify as 

 high risk (they are of relatively better vigor than high risk 

 stands). If such a stand is dominated by shade tolerant species, it 

 is included here, regardless of age. 



2. All commercial lodgepole stands which are 50-100 years old and non- 

 vigorous, and which have not qualified as high risk. 



3. Various other stands containing commercial material which are not 

 manageable because of poor tree quality and vigor. 



Possible combinations: None 



Code 12: Commercial thinning 



This category includes stands which are fully stocked to overstocked 

 with Douglas-fir, western larch, ponderosa or lodgepole pine, and which meet 

 all of the following characteristics: 



1. Would yield commercial sawtimber if thinned. 



2. Are less than 100 years old. 



3. Are currently growing at less than full potential, but are capable of 

 release. 



4. Do not exhibit unmanageable insect or disease problems. 

 Possible combinations: (12, 13), (12, 13, 22), (12, 22). 



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