FOREST GLOSSARY

S - Z

S

Seed tree
Healthy tree suitably sited and left standing after final felling for natural regeneration purposes; known also as mother tree
Selective felling
Felling of selected trees, usually the largest trunks meeting specified dimensions
Single-grip harvester
A machine designed to fell, delimb, cross-cut and measure logs using a device mounted in the log loader
Softwood
Woods obtained from coniferous trees
Soil preparation
Rendering the soil suitable for planting seedlings by scarifying, harrowing and mounding
Solid cubic metre
The volume of wood that displaces one cubic metre of water
Stand
Area of forest on a particular type of soil and with a uniform tree species distribution that is treated as a distinct entity
Stem
Trunk of a tree after removal of branches and stump
Succession
In a forest, a natural gradual development towards a stable state (climax)

T

Thinning
Selective felling designed to promote the growth of the remaining trees. Thinning normally provides merchantable wood
Timber harvesting
Felling, delimbing and cross-cutting of trees in the forest followed by haulage to the transport route, usually a road
Timber procurement
See Wood procurement
Total drain
Volume of stemwood removed from a growing forest during a given time either by natural events or felling; sum of wood felled and natural mortality

U

V
Virgin forest
Forest in its natural state, untouched by man

W

Wastewood
Residual crowns, small trees etc. left after felling
Wood cellulose
A polymeric carbohydrate that forms the main constituent of the wood cell wall
Wood Chips
Pieces of wood (approximately 1 inch square and 1/8 inch thick) resulting from the cutting of pulpwood logs in chippers in the wood preparation area of a pulp mill prior to conversion into pulp in the digester(s)
Wood fibre
Wood cells; the main raw material for papermaking
Wood procurement
Purchase, harvesting and transport of wood to the mill
Wood production
The growing of wood in a forest together with related activities
Wood-based energy
Energy obtained by burning wood. Part of the natural cycle in which carbon dioxide is released and taken up again by new, growing trees via photosynthesis
Woodroom
Part of a pulp mill where logs are debarked

X

Y

Year Ring
See Growth Ring

Z