I 



WANS: 



It Definition of Type - Bulletin 61, 



A forest, or part of a forest, possessing distinct- 

 ive characteristics of composition or habit of growth. 

 * Use of Types and Type -maps. 



(a) To show the liind, location and er.tent of the 

 various types of tinker as a "basis for present management. 



(b) To malie an estimate of the possibilities of 

 each area on the forest, 



5. The Investigations Manual says that the proper 

 . basic for separating forest types is the physical condition 



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of the locality, and not the composition or a^o of the stand, 

 or any other variable condition. 



(a) 7ith all the physical factors of soil end climate at 

 hand, we can not say, with ray certainty, that wo will have 

 a particular species on that site. V r e need to examine the 

 area itself for its composition. If it was not necessary to 

 study the composition we could t&?zo a U.3.G.S. sheet and a 

 soil map, and determine the type while in an office. This we 

 can not do with the present l-zLO-./locL^e of types in our ITation- 

 al j?orests. L study of both physical factors and composi- 

 tion is necessary to determine type, (b) jl study of typos 



from the physical factors alone would be of little practical 



S85 ~o 



