CONTENTS 



Page 

 No. 



The forest survey in Montana 2 



Forest land 3 



The river bottom hardwood forest 4 



The semiarid ponderosa pine forest 5 



The western mountain forest 6 



Timber volume 7 



Statistical data by county 



Table 1 - Forest land area 8 



Table 2 - Timber volume 9 



Standard Statistical data for unit 



Table 3 - Land area by major use . 10 



Table 4 - Forest land area by class 10 



Table 5 - Commercial forest land by forest type and 



stand-size class 11 



Table 6 - Board-foot volume on commercial forest land 



by species 12 



Table 7 - Cubic-foot volume on commercial forest land 



by species 13 



Table 8 - Board-foot volume on commercial forest land 



by stand- size and tree-diameter classes • . . 14 

 Table 9 - Cubic-foot volume on commercial forest land 



by stand-size and tree-diameter classes ... 14 

 Table 10 - Cubic-foot volume on commercial forest land 



by species group, tree size, and class of 



material 15 



Table 11 - Average volume per acre by stand-size class. . 15 



Definitions 16 



Forest survey method 17 



Accuracy of the data 18 



List of forest survey reports for Montana 20 



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