Site index charts for Douglas-fir in the Pacific Northwest.

Grover A. Choate; Floyd A. Johnson

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Site index charts for Douglas-fir in the Pacific Northwest.

Informally Refereed

Authors:

Grover A. Choate, Floyd A. Johnson

Year:

1958

Type:

Research Note

Station:

Pacific Northwest Research Station

Source:

PNW Old Series Research Notes No. 161, p. 1-6

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Abstract

Charts in this report can be used to estimate site index for Douglas-fir from stand age and from average total height of dominant and codominant trees. Table 1 and figure 2 in USDA Technical Bulletin 201 have been used for this purpose in the past. However, the table requires time-consuming interpolation and the figure gives only rough approximations.

Citation

Choate, Grover A.; Johnson, Floyd A. 1958. Site index charts for Douglas-fir in the Pacific Northwest. PNW Old Series Research Notes No. 161, p. 1-6