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Silvicultural Effects of Skyline Crane and High-Lead Yarding

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Abstract:

Skyline crane yarding 77,000 board feet of logs per acre from steep slopes in the Sitka spruce-western hemlock type in coastal Oregon exposed 6.4 percent of the mineral soil, compared with 15.8 percent by conventional high-lead yarding. The difference between the two systems was not statistically significant. Skidtrails tended to be across slope in contrast to high-lead skidtrails which were mostly up and down slope, thereby providing channels for accelerated flow of water. Damage to established tree seedlings and lesser vegetation was about the same for the two systems. The skyline crane system requires much less road construction than conventional systems, reducing construction costs as well as soil disturbance and land taken out of production. Skyline cranes deserve careful consideration as our of the several alternatives for yarding logs from steep slopes.

Document Type: Journal Article

Affiliations: Principal Silviculturist, Pacific Northwest Forest and Range Expt. Sta., Forest Service, U. S. Dept. Agric., Portland, Ore.

Publication date: April 1, 1967

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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