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Uprooted tree stumps. Stump harvesting is not a new process. Records of tree stumps being dug out of the ground for wood fuel go back hundreds of years in Europe. It was practiced in the 1970s in Swedish forests before declining in popularity, but is being considered again there now that there is a greater need for fuel wood.
The use of wood as a fuel source for heating is much older than civilization and is assumed to have been used by Neanderthals. Today, burning of wood is the largest use of energy derived from a solid fuel biomass. Wood fuel can be used for cooking and heating, and occasionally for fueling steam engines and steam turbines that generate electricity.
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 ...
Torrefaction is a thermochemical treatment of biomass at 200 to 320 °C (392 to 608 °F). It is carried out under atmospheric pressure and in the absence of oxygen.During the torrefaction process, the water contained in the biomass as well as superfluous volatiles are released, and the biopolymers (cellulose, hemicellulose and lignin) partly decompose, giving off various types of volatiles. [4]
Woodchips, with hand for scale. Woodchips are small- to medium-sized pieces of wood formed by cutting or chipping larger pieces of wood such as trees, branches, logging residues, stumps, roots, and wood waste. [1] [2] Woodchips may be used as a biomass solid fuel and are raw material for producing wood pulp. [3]
In rural areas, fuel wood is used for artisanal activities such as carving, woodworking, and crafting traditional items. [14] Charcoal production: Fuel wood is also a key raw material for charcoal production. Charcoal, derived from the carbonization of wood, is used for cooking, heating, and industrial processes. [15] [16]
In the narrow sense of the terms, wood, forest, forestry and timber/lumber industry appear to point to different sectors, in the industrialized, internationalized world, there is a tendency toward huge integrated businesses that cover the complete spectrum from silviculture and forestry in private primary or secondary forests or plantations via the logging process up to wood processing and ...
Where logging takes place on soft ground, loggers can use the branches and tops of trees as part of the timber-harvesting process to provide a track for forest machines. [5] Using slash in this manner reduces ground damage.