Stereo photo series for quantifying forest residues in the Douglas-Fir-Hemlock type of the Willamette National Forest.

Roger D. Ottmar; Colin C. Hardy; Robert E. Vihnanek

doi:10.2737/PNW-GTR-258

Treesearch

Stereo photo series for quantifying forest residues in the Douglas-Fir-Hemlock type of the Willamette National Forest.

Informally Refereed

Authors:

Roger D. Ottmar, Colin C. Hardy, Robert E. Vihnanek

Year:

1990

Type:

General Technical Report

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-GTR-258

Source:

Gen. Tech. Rep. PNW-GTR-258. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 64 p

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Download (PDF 8.82 MB): https://research.fs.usda.gov/download/treesearch/26289.pdf

Abstract

A series of stereo photographs displays a range of residue loadings for harvested units in the Douglas-fir-western hemlock cover type common to the Willamette National Forest. Postburn residue levels are also represented for the Douglas-fir-western hemlock types. Information with each photo includes measured quadratic means and weights for various size classes, woody fuel depth, and duff depth. The stereo photo series is designed to help forest managers appraise woody residue after both timber harvest and treatment with fire in forest types not previously represented by a photo series.

Keywords

residues, fuel loadings, slash, residue measurements, Douglas-fir (Pseudotsuga Menziesii), western hemlock, Tsuga heterophylla

Citation

Ottmar, Roger D.; Hardy, Colin C.; Vihnanek, Robert E. 1990. Stereo photo series for quantifying forest residues in the Douglas-Fir-Hemlock type of the Willamette National Forest. Gen. Tech. Rep. PNW-GTR-258. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 64 p