Logging to Save Ponderosa Pine Regeneration: A Case Study (Classic Reprint) - Couverture souple

Barrett, James W.

Couverture souple

ISBN 10 : 0243893086 ISBN 13 : 9780243893089

Editeur : Forgotten Books, 2018

Synopsis

Excerpt from Logging to Save Ponderosa Pine Regeneration: A Case Study

A front - end grapple did less damage to residual crop trees in piling slash than a conventional crawler tractor with slash blade, but the tractor piled more of the smaller material. Following the procedure demonstrated in this case study would cost a little less than clear cutting and planting, using present-day expenses in central Oregon.

Keywords: Regeneration methods - )economic evaluation, ponderosa pine, Pinus ponderosa, logging -regeneration, understory layer.

Ponderosa pine (pinus ponderosa) harvesting in the Pacific Northwest may be broadly grouped into four systems-clearcutting, seed tree, selec tion, and shelterwood. Under the latter three, an attempt is made to preserve younger trees in the stand. Clearcutting, on the other hand, means that the understory trees, if present, will be destroyed and the area replanted. Where young trees are badly diseased, clearcutting is usually the only alternative, although occasionally seed tree or shelter wood may be used if the overstory is quickly removed after the regenera tion is established.

In a healthy stand where overstory volume is light, forest managers generally try to harvest the merchantable trees and save the understory. However, where stands contain a heavy overstory volume board feet or more per acre), managers often differ in their prescription for the area. One manager may choose to clearcut, while another prefers to carefully remove the overstory and save a portion of the understory. Such choices apparently stem from good and bad experiences in logging. Where heavy volumes occur in central Oregon, some attempts to save an adequate number of understory trees have been discouraging.

Détails de l'édition

• Éditeur: Forgotten Books
• Date d'édition: 2018
• Langue: anglais
• ISBN 10: 0243893086
• ISBN 13: 9780243893089
• Reliure: Broché
• Nombre de pages: 24
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