Felling

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Two fellers felling a tree on the Atherton Tableland, Queensland, Australia, 1890-1900. Image: State Library of Queensland

Felling is the process of cutting down individual trees,[1] an element of the task of logging. The person cutting the trees is a feller.[1]

Methods[edit]

Hand felling[edit]

In hand felling, an axe, saw, or chainsaw is used to fell a tree, followed up by limbing and bucking in traditional applications. In the modern commercial logging industry, felling is typically followed by limbing and skidding.

Feller buncher[edit]

A feller-buncher is a motorized vehicle with an attachment which rapidly cuts and gathers several trees in the process of felling them.

In cut-to-length logging a harvester performs the tasks of a feller-buncher additionally doing the delimbing and bucking of the trees as well. When harvesting wood from a felled tree, the recommended methods should be followed in order to get more wood recovery. The suggested trend is to make deeper cuts and smaller openness when performing undercuts. [2]

Types of Cut[edit]

Undercut[edit]

This is the guiding or aiming slot for the tree and is a V-shaped notch placed on the side of the tree in the direction of the falling. [3] There are two types of undercut:

  1. Standard Undercut
  2. Reverse Undercut

Back Cut[edit]

This cut is made on the opposite side of the tree and is helpful in the process of felling by releasing the stress on the back of the tree. [3]

Boom - Corridor Experiment[edit]

This was an experiment conducted regarding felling trees and the continuous felling of trees in boom-corridors which might lead to an increase in harvester productivity. An efficient way to do this would be to use felling heads which would increase efficiency and fall time. [4]

References[edit]

  1. ^ a b "Feller" def. 2. and "Felling", def. 1. Oxford English Dictionary Second Edition on CD-ROM (v. 4.0) © Oxford University Press 2009
  2. ^ Borz, Stelian Alexandru; Ignea, Gheorghe; Vasilescu, Maria Magdalena (2014-10-02). "Small Gains in Wood Recovery Rate when Disobeying the Recommended Motor-Manual Tree Felling Procedures: Another Reason to Use the Proper Technical Prescriptions". BioResources. 9 (4): 6938–6949. doi:10.15376/biores.9.4.6938-6949. ISSN 1930-2126.
  3. ^ a b "Felling, Limbing and Bucking Trees". extension2.missouri.edu. Retrieved 2018-11-29.
  4. ^ Bergström, Dan; Bergsten, Urban; Hörnlund, Thomas; Nordfjell, Tomas (July 2012). "Continuous felling of small diameter trees in boom-corridors with a prototype felling head". Scandinavian Journal of Forest Research. 27 (5): 474–480. doi:10.1080/02827581.2012.663404. ISSN 0282-7581.