Cut-to-length logging (CTL) is a mechanized harvesting system in which trees are delimbed and ''cut to length'' directly at the

stump Stump may refer to: * Stump (band), a band from Cork, Ireland and London, England * Stump (cricket), one of three small wooden posts which the fielding team attempt to hit with the ball *Stump (dog): Clussexx Three D Grinchy Glee (born 1998), 200 ...

. CTL is typically a two-man, two-machine operation with a harvester felling, delimbing, and

bucking Bucking is a movement performed by an animal in which it lowers its head and raises its hindquarters into the air while kicking out with the hind legs. It is most commonly seen in herbivores such as equines, cattle, deer, goats, and sheep. Most r ...

trees and a

forwarder A forwarder is a forestry vehicle that carries big felled logs from the stump to a roadside landing. Unlike a skidder, a forwarder carries logs clear of the ground, which can reduce soil impacts but tends to limit the size of the logs it c ...

transporting the logs from the felling to a landing area close to a road accessible by

truck A truck or lorry is a motor vehicle designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame construction ...

s. The

capital cost Capital costs are fixed, one-time expenses incurred on the purchase of land, buildings, construction, and equipment used in the production of goods or in the rendering of services. In other words, it is the total cost needed to bring a project to a ...

s for a typical CTL operation, with one harvester and one forwarder, are quite high. The price of a pair of machines alone are approx.

US$ The United States dollar (symbol: $; code: USD; also abbreviated US$ or U.S. Dollar, to distinguish it from other dollar-denominated currencies; referred to as the dollar, U.S. dollar, American dollar, or colloquially buck) is the official ...

1,000,000. CTL is the primary logging method in

European countries The list below includes all entities falling even partially under any of the regions of Europe, various common definitions of Europe, geographical or political. Fifty generally recognised sovereign states, Kosovo with limited, but substantial, ...

, while

full-tree logging Logging is the process of cutting, processing, and moving trees to a location for transport. It may include skidding, on-site processing, and loading of trees or logs onto trucks or skeleton cars. Logging is the beginning of a supply chain ...

and the even older technique of

tree-length logging Logging is the process of cutting, processing, and moving trees to a location for transport. It may include skidding, on-site processing, and loading of trees or logs onto trucks or skeleton cars. Logging is the beginning of a supply chain ...

are more popular in

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

and

less developed countries A developing country is a sovereign state with a lesser developed industrial base and a lower Human Development Index (HDI) relative to other countries. However, this definition is not universally agreed upon. There is also no clear agreem ...

, where tree sizes can exceed the capacity of the harvester's felling head, i.e., tree stems with a butt diameter of over 90 centimeters. CTL lends itself to timber harvesting in plantation forestry where stems are often harvested before they reach large dimensions.

Advantages compared to full-tree logging

*Cleaner wood since the logs are not skidded on the ground to the landing (in tree length more than full tree) *More fresh wood (in tree length more than full tree) *Less damage to retained trees in

thinning Thinning is a term used in agricultural sciences to mean the removal of some plants, or parts of plants, to make room for the growth of others. Selective removal of parts of a plant such as branches, buds, or roots is typically known as pruning. ...

operations *Typically requires fewer types of machines in an operation *No need to clear large landings close to the road *Greater personnel safety due to enclosed/protected machine cabs *More environmentally friendly due to: **less

soil Soil, also commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Some scientific definitions distinguish ''dirt'' from ''soil'' by restricting the former te ...

disturbance than in skidding operations (if improper skidding practices take place) **no

slash Slash may refer to: * Slash (punctuation), the "/" character Arts and entertainment Fictional characters * Slash (Marvel Comics) * Slash (''Teenage Mutant Ninja Turtles'') Music * Harry Slash & The Slashtones, an American rock band * Nash ...

dumped at the landing **higher retention of foliar nutrients within the harvested area

Disadvantages compared to full-tree logging

*Somewhat higher capital cost per

volume Volume is a measure of occupied three-dimensional space. It is often quantified numerically using SI derived units (such as the cubic metre and litre) or by various imperial or US customary units (such as the gallon, quart, cubic inch). The de ...

when used in large scale clear cuts *Use of more advanced technology requires more operator knowledge and training

References

{{Forestry Logging