Uphill falling of old-growth Douglas-fir.

Douglas L. Hunt; John W. Henley

doi:10.2737/PNW-GTR-122

Treesearch

Uphill falling of old-growth Douglas-fir.

Informally Refereed

Authors:

Douglas L. Hunt, John W. Henley

Year:

1981

Type:

General Technical Report

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-GTR-122

Source:

Gen. Tech. Rep. PNW-GTR-122. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 18 p.

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Abstract

Five timber sales were made in old-growth Douglas-fir with matched cutting units. On one unit of each sale uphill falling by either hydraulic jacks or tree-pulling machine was required; on the other unit free falling was required. Logging equipment and methods were the same in each unit. Uphill falling produced a larger volume of timber at less cost than free falling because breakage was less.

Keywords

Felling operations, old-growth stands, Douglas-fir, Pseudotsuga menziesii

Citation

Hunt, Douglas L.; Henley, John W. 1981. Uphill falling of old-growth Douglas-fir. Gen. Tech. Rep. PNW-GTR-122. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 18 p.