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Bucking is the process of cutting a felled and delimbed tree into logs. [2] Significant value can be lost by sub-optimal bucking because logs destined for plywood, lumber, and pulp each have their own value and specifications for length, diameter, and defects. Cutting from the top down is overbucking and from the bottom up is underbucking.
Tree harvester (Click for video) 6-wheeled Valmet harvester Small 4-wheeled Rottne harvester Timberjack harvester John Deere harvester in SwedenA harvester is a type of heavy forestry vehicle employed in cut-to-length logging operations for felling, delimbing and bucking trees.
The undercut or notch cut 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 intended fall. [4] The back cut or felling cut is made on the opposite side of the tree of the undercut and is cut through the base of the tree severing the “hinge” holding the tree up. [4]
A good rule of thumb for all felling scenarios is to make the depth of the face cut or undercut, which is your directional angles notch face the way you want the tree to fall, roughly equal to 1/3 the diameter of the tree. [5] Additionally, one should leave about 10% for your holding wood or hinge wood to direct the tree on its way to the ...
Cut-to-length logging (CTL) is a mechanized harvesting system in which trees are delimbed and cut to length directly at the stump. [1] CTL is typically a two-man, two-machine operation with a harvester felling, delimbing, and bucking trees and a forwarder transporting the logs from the felling to a landing area close to a road accessible by ...
A feller buncher is a type of harvester used in logging.It is a motorized vehicle with an attachment that can rapidly gather and cut a tree before felling it. Feller is a traditional name for someone who cuts down trees, [1] and bunching is the skidding and assembly of two or more trees. [2]
Various density-management diagrams conceptualizing the density-driven stand dynamics have been developed. [82] [83] Smith and Brand's (1988) [84] diagram has mean tree volume on the vertical axis and the number of trees/ha on the horizontal axis: a stand can either have many little trees or a few big ones. The self-thinning line shows the ...
Selection cutting is often (sometimes deliberately) confused with "selective" cutting, a term synonymous with the practice of highgrading (the removal of the most economically profitable trees in a forest, often with a disregard for the future of the residual stand). Often the latter term is used by foresters or loggers to imply the former ...