Pulpwood

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Pulpwood

Pulpwood refers to timber

Timber

Timber may refer to:* Lumber, i.e. wood materials* Timber, Oregon, an unincorporated community in the U.S. state of Oregon* Timber , a 1984 arcade game by Bally Midway...
grown with the principal purpose of making wood pulp

Wood pulp

Pulp is a dry fibrous material prepared by chemically or mechanically separating fibers from wood or fiber crops.Pulp can be either fluffy or formed into thick sheets....
for paper

Paper

Paper is thin material mainly used for writing upon, printing upon or packaging. It is produced by pressing together moist fibers, typically cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets....
production. However, pulpwood is also used as the raw material for some wood products, such as oriented strand board

Oriented strand board

Oriented strand board, or OSB, or waferboard, or Sterling board or SmartPly is an engineered wood product formed by layering strands of wood in specific orientations....
(OSB), and there is an increasing demand for pulpwood as a source of 'green energy' by the bio-energy sector. Trees raised specifically for pulp production account for 16% of world pulp production, old growth forest

Old growth forest

Old growth forest is a type of forest that has attained great age and so exhibits unique biology features.Old growth forests typically contain large live trees, large dead trees , and large logs, as well as many other common characteristics representative of forests in general....
s 9% and second- and third- and more generation forests account for the balance.

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Encyclopedia

Pulpwood refers to timber

Timber

Wood pulp

Pulp is a dry fibrous material prepared by chemically or mechanically separating fibers from wood or fiber crops.Pulp can be either fluffy or formed into thick sheets....
for paper

Paper

Oriented strand board

Old growth forest

Reforestation

Reforestation is the restocking of existing forests and woodlands which have been depleted, with native tree stock. The term reforestation can also refer to afforestation, the process of restoring and recreating areas of woodlands or forest that once existed but were deforestation or otherwise removed or destroyed at some point in the pas...
is practiced in most areas, so trees are a renewable resource.

In the logging

Logging

Logging is the process in which certain trees are cut down for forest management and timber....
of mixed forest

Forest

File:Stara planina suma.jpgA forest is an area with a high density of trees. There are many definitions of a forest, based on various criteria....
stands, the better tree

TREE

TREE was a Boston hardcore punk band formed in the summer of 1990. They were active in the Boston music scene until disbanding in 2002....
s are usually used for sawlogs for lumber

Lumber

Lumber or timber is wood in any of its stages from logging through readiness for use as structural material for construction, or wood pulp for paper production....
production, while the inferior trees and components are harvested for pulpwood production. Pulpwood usually derives from four types of woody materials in a mixed logging operation. First are open-grown trees, that are heavily branched low on the trunk, and so make poor sawlogs. Second are dead or diseased trees. Third are tops cut from trees harvested for sawlogs (branches are rarely used since they contain little useable wood after the bark has been removed). And fourth are trees too small to harvest for sawlogs.

Pulpwood is also harvested from plantations/tree farms established for the specific purpose of growing pulpwood, with little or minimal sawlog production. Monoculture

Monoculture

Monoculture is the agricultural practice of producing or growing one single crop over a wide area. The term is also applied in several fields. It is usually developed by extensive growing farmers....
s of species intended specifically for pulpwood include loblolly/slash pine

Pine

Pines are Pinophyta trees in the genus Pinus, in the family Pinaceae. They make up the monotypic subfamily Pinoideae. There are about 115 species of pine, although different authorities accept between 105 and 125 species....
in the southern USA; various species of eucalyptus

Eucalyptus

Eucalyptus is a diverse genus of Flowering plant trees in the Myrtus family, Myrtaceae. Members of the genus dominate the tree flora of Australia....
(most commonly Eucalyptus globulus
Eucalyptus globulus

The Tasmanian Blue Gum, Southern Blue Gum or Blue Gum, is an evergreen tree, one of the most widely cultivated trees native to Australia....
and Eucalyptus grandis
Eucalyptus grandis

Eucalyptus grandis, Flooded gum, Rose gum, is a tall tree with smooth bark, rough at the base fibrous or flaky, grey to grey-brown. At maturity, it is often 40 metres tall, though the largest specimens can exceed 80 metres tall....
) in Latin America, Iberian Peninsula

Iberian Peninsula

The Iberian Peninsula, or Iberia, is located in the extreme southwest of Europe and includes modern-day Spain, Portugal, Andorra and Gibraltar and a very small area of France....
, Australia, south-east Asia and southern Africa and acacia

Acacia

Acacia is a genus of shrubs and trees belonging to the subfamily Mimosoideae of the family Fabaceae, first described in Africa by the Sweden botanist Carolus Linnaeus in 1773....
(most commonly Acacia mangium

Acacia mangium

Acacia mangium is a species of Flowering plant tree in the pea family, Fabaceae, that is native to northeastern Queensland in Australia, the Western Province of Papua New Guinea, Papua , and the eastern Maluku Islands....
) in south-east Asia and southern Africa.

Natural forest stands may also be harvested solely for pulpwood where, for various reasons, the value of the trees as sawlogs is low. This may be due to the predominant species in the forest stand (for example, some aspen

Aspen

Aspens are trees of the Salicaceae family and comprise a section of the poplar genus, Populus sect. Populus. There are six species in the section, one of them atypical, and one hybrid:...
forests in northern North America), or to the relative proximity of the nearest sawmill or pulp mill

Pulp mill

A pulp mill is a manufacturing facility that converts wood chips or other Fiber crop into a thick fiber board which can be shipped to a paper mill for further processing....
.

Salvage cuts after forest fires, tornado

Tornado

A tornado is a violent, rotating column of air which is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud....
es, hurricanes, or other natural disasters are often also for pulpwood. An alternative source of wood for use in kraft pulping

Kraft process

The kraft process describes a technology for conversion of wood into wood pulp consisting of almost pure cellulose fibers. The process entails treatment of wood chips with a mixture of sodium hydroxide and sodium sulfide that break the bonds that link lignin to the cellulose....
is recovered lumber from demolition, industrial processing of wood and wooden pallets.

Chemical composition of pulpwood (%)
Wood	Cellulose	Lignin	Mannan	Araban	Xylan
Aspen	56.5	16.3	2.3	0.4	16.0
Paper, birch	44.5	18.9	1.5	0.5	24.6
Red, maple	44.8	24	3.5	0.5	17.3
Balsam fir	47.7	29.4	12.4	0.5	4.8
Jack pine	45.0	28.6	10.8	1.4	7.1
White spruce	48.5	27.1	11.6	1.6	6.8
Source:

Pulpwood

See also