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A-frame | | Two wood or metal uprights mounted in the shape of ... |
A.C.E. (ACE) | | Allowable-cut effect. ... |
A.Y.D. (AYD) | | Average yarding distance. ... |
Abney level | | Hand-held clinometer used to measure slope in percent ... |
Aboveground biomass | | Aboveground portion of a tree, excluding the root system ... |
abutment | | A rock or timber structure built along the bank of ... |
Access | | Means of gaining entry to timber on a tract or ... |
Accumulating shear | | Shearhead on a feller-buncher that is capable of accumulating and ... |
Acre | | An area of land containing 43,560 square feet or 10 ... |
Admiralty shackle | | Heavy shackle at the tail tree that connects the skyline ... |
Adult wood | | Wood which characteristically has relatively constant cell size, well-developed structural ... |
Adverse grade | | 1.) In highway transport, uphill haul that requires trucks to ... |
Aerial logging | | Yarding system employing aerial lift of logs, such as balloons ... |
Aerial logging | | A logging system which fully suspends the logs such as ... |
Aerial photogrammetry | | Interpreting information from aerial photographs. ... |
Afforestation | | Establishment of forest crops by artificial methods, such as planting ... |
Age | | 1.) Mean age of the trees comprising a forest, crop, ... |
Age class | | One of the intervals, commonly 10 or 20 years, into ... |
Agropelter | | A horrible animal that lived in hollow trees mostly in ... |
Air-dried | | Lumber or other wood products that have been either dried ... |
Air-dried | | Lumber that was dried by exposure to air in a ... |
All-aged | | Forest or stand containing trees of almost all age classes ... |
Allowable annual cut (AAC) | | The volume of timber that may be harvested annually from ... |
Allowable cut | | Volume of timber that may be harvested during a given ... |
Allowable-cut effect | | Allocation of anticipated future forest timber yields to the present ... |
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