17. Attachment 5 - Yellow Pine Visual Aid.pdf
PDF 2 MB Posted
- Attached to
- Dutton Hill G-Z Stewardship IRSC - R3 Coconino National Forest, Flagstaff Ranger District, Arizona
- Solicitation number
- 12363N26R4001
- Issued by
-
Department of Agriculture Forest Service
About this file
This document is a visual aid for identifying yellow pine trees, specifically ponderosa pines, in forestry operations on Dutton Hill. The guide provides detailed descriptions and photographic examples of yellow pine characteristics at different stages of maturity, focusing on bark color, texture, and branch structure.
The visual aid categorizes yellow pines into five stages: (1) Pre-settlement/old trees (approximately 150 years old) with reddish-brown to black bark and large, smooth plates; (2) Very clear yellow pines with very yellow bark and long, smooth plates; (3) Fairly clear yellow pines with yellow bark and developing plates; (4) Borderline yellow pines with reddish-brown bark turning yellow and developing plates; and (5) Transitional blackjacks with bark beginning to turn reddish-brown but without developing plates. The document is intended to help forestry technicians accurately identify and mark yellow pine trees during timber marking operations.
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Text version
Yellow Pine Visual Aid
(intended to supplement yellow pine definition and help forestry technicians doing walkthroughs and timber marking on Dutton Hill accurately determine what is and what is not a yellow pine)
Yellow Pine/Pre-settlement/Old Tree: mature ponderosa pine approximately 150 years or older; bark ranges from reddish brown, shading to black on top with moderately large plates between fissures to reddish brown to yellow, with very wide, long, and smooth plates; tops range from pyramidal or rounded (occasionally pointed) to flat (making no further height growth); branches in the lower third of the crown are generally drooping, and in older trees, are often large, gnarled or crooked.
Yellow pines (very clear) – very yellow bark, with long, smooth plates
Yellow pines (fairly clear) – yellow bark with fairly large plates, though plates not quite as long and smooth as previous picture; branches aren’t very large, but still drooping in lower third of crown
Yellow pines (borderline) – bark reddish brown, turning yellow, not as obviously platy as in previous pictures (especially tree on left), but larger plates are developing between fissures; lower branches are large and drooping (partly due to mistletoe but still enough to be a yellow pine)
Transitional blackjacks (borderline yellow pines) – bark beginning to turn reddish brown, but no real plates developing; branches in lower crown horizontal to angling slightly upward and not very large.
Transitional blackjacks (not borderline yellow pines)– bark beginning to turn reddish brown, but no real plates developing; branches in lower crown horizontal to angling slightly upward and not very large.
File details come from the government source that posted it. Updated .