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Measurement of tree circumference, the tape calibrated to show diameter, at breast height, making sure that the tape is perfectly level and that the tape is not kinked, so as not to skew the reading of the diameter. Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree.
Two lumberjacks at work on a tree on the Atherton Tableland, Queensland, Australia, 1890–1900 A completed undercut in a Sugar Pine tree in Madera County, California around 1911. [1] Felling is the process of cutting down trees, [2] an element of the task of logging. The person cutting the trees is a lumberjack.
A felled and delimbed tree is cut into logs of standard sizes, a process called bucking. A logger who specialises in this job is a buck sawyer. Bucking may be done in a variety of ways depending on the logging operation. Trees that have been previously felled and moved to a landing with a log skidder are spread out for processing. While many of ...
Tree girth measurement diagram. Tree girth is a measurement of the circumference of tree trunk. It is one of the most ancient, quickest, and simplest of foresters' measures of size and records of growth of living and standing trees. The methods and equipment have been standardized differently in different countries.
New growth emerges, and after a number of years, the coppiced trees are harvested, and the cycle begins anew. Pollarding is a similar process carried out at a higher level on the tree in order to prevent grazing animals from eating new shoots. [1] Daisugi (台杉, where sugi refers to Japanese cedar), is a similar Japanese technique. [2] [3]
Selection cutting in California, May 1972 The results of selective cutting of Ponderosa Pine. Selection cutting, also known as selection system, is the silvicultural practice of harvesting trees in a way that moves a forest stand towards an uneven-aged or all-aged condition, or 'structure'.