Logging

People cut down trees for wood.

They move logs to make things. We use wood for houses and paper.

This job is called logging. Workers use big tools like saws. They also use heavy trucks. Some people even use helicopters.

Moving logs can be hard. It is a very big job.

Logging is the way people cut and move trees.

We use wood for many things. It helps us build houses. It also makes paper.

There are different ways to do this work. One way is called clearcutting. This is when workers remove almost all trees in an area. Another way is selective logging. This means workers only cut some trees.

In the past, people used rivers to move logs. This was called log driving. Today, we use big machines. We use diesel trucks and chainsaws. Some workers even use helicopters to move wood.

Logging is a very dangerous job. Workers use heavy tools on steep ground. They must watch for "widowmakers." These are loose branches that might fall. Logging can also change the forest. It can release carbon dioxide into the air. This happens when tree parts are burned for power. This power is called biomass. It comes from living things like plants.

Logging is the way people cut and move trees. This work provides raw materials for many things we use every day. We need wood for building houses and for making paper. It can also be used for energy. Logging is the start of a long path called a supply chain. This chain moves wood from the forest to sawmills or lumber yards.

There are many different ways to harvest trees. In clearcutting, workers remove almost all the trees in a specific area. Some people use selective logging to take only certain trees. There are also industrial methods like stem-only harvesting. In this way, workers cut the tree and remove the branches at the stump. Another way is whole-tree logging, where the whole tree is moved to the roadside.

How people move logs has changed a lot over time. Before the 1880s, people used rivers to float logs downstream. This was called log driving or timber rafting. From the 1880s until World War II, the railroad logging era began. Railroads helped move wood from far away forest areas. After World War II, the modern mechanized era started. Now, workers use diesel trucks, chainsaws, and even helicopters to move wood.

Logging is a very hard and dangerous job. In the United States, it is one of the most hazardous industries. In 2008, the industry had 93 deaths among 86,000 workers. This means the death rate was 108.1 deaths per 100,000 workers. Workers must watch out for "widowmakers." These are loose branches that might fall from the canopy. They also use the cry "Timber!" to warn others that a tree is falling.

Logging can also change the environment in big ways. It can release carbon dioxide into the air. This happens when parts like bark and sawdust are burned for energy. This energy is called biomass, which comes from living things. Using biomass can be a way to make electricity or heat. However, too much logging can cause deforestation or loss of biodiversity. This means the variety of living things in a forest might decrease.

Logging is the multi-step process of cutting, processing, and moving trees. This activity serves as the beginning of a massive global supply chain. It provides the raw materials used for housing, construction, and consumer paper products. In forestry, the term often refers specifically to the logistics of moving wood from the stump to a sawmill. However, it can also describe broader silviculture activities. Logging systems are used to manage forests and produce biomass for energy. They can also be used to restore ecosystem functions or reduce wildfire risks.

There are several distinct industrial methods used to harvest trees. Stem-only harvesting involves felling a tree and removing its branches at the stump. The resulting log is then moved to a landing area for processing. Whole-tree logging involves transporting the entire tree, including tops and limbs, to the roadside. This method can remove significant nutrients and soil cover from the site. Cut-to-length logging uses mechanical harvesters to fell, delimb, and buck trees at the stump. These machines then place the logs into bunks for transport by a skidder or forwarder.

Harvesting methods also vary based on how much of the forest is removed. Clearcutting, or clearfelling, removes essentially all standing trees in a selected area. This method is often used to meet specific silviculture objectives, such as healthy regeneration. Other specialized methods include shelterwood cutting, group selective, and seed-tree cutting. High grading is a practice where workers cut only the highest-value trees. This often leaves behind diseased or malformed trees, which can harm the forest. Selection cutting is a different practice that manages stands by harvesting a specific proportion of trees.

The history of logging is divided into three distinct technological eras. Before the 1880s, the pre-industrial era relied on simple transport methods. Workers used rivers for log driving or timber rafting to move trunks downstream. Some logs, called deadheads, would sink due to high resin content. From the 1880s until World War II, the railroad logging era began. This era introduced steam-powered machinery and railroads into remote forest areas. After World War II, the modern mechanized era transformed the industry. Chainsaws, diesel trucks, and Caterpillar tractors made railroad-based logging obsolete.

Logging has significant environmental and atmospheric consequences. Logging can emit three times as much carbon dioxide per acre as a wildfire. This happens because tree parts like bark, branches, and sawdust are often burned for energy. While wildfires release less than 2 percent of the carbon in trees, logging emissions are much higher. In the United States, logging is responsible for as much annual greenhouse gas as burning coal. Furthermore, excess logging can lead to deforestation and a loss of biodiversity. Illegal harvesting can also occur through the use of corrupt means or the cutting of protected species.

Safety is a primary concern because logging is a highly hazardous occupation. In the United States, it is consistently recognized as a high-priority industry for occupational safety. In 2008, the industry employed 86,000 workers and recorded 93 deaths. This resulted in a fatality rate of 108.1 deaths per 100,000 workers. This rate was over 30 times higher than the overall national fatality rate. Workers must also watch for "widowmakers," which are loose branches hanging in the canopy. The warning cry "Timber!" is used to alert others that a tree is falling.

Finally, the industry connects to the production of bioenergy. Bioenergy is energy derived from biomass, which is recently living organic matter. Forest biomass includes twigs, bark, stumps, and unmerchantable stem wood. Through processes like combustion or fermentation, this material becomes liquid or gaseous fuel. This fuel is used for transportation, heat, and electricity. Because the carbon released during combustion is part of a reuse cycle, bioenergy is viewed as a low-emissions fuel. This links forestry directly to the global renewable energy sector.