Translations:AY Honors/Forestry/Answer Key/5/en

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A DBH-tape is a form of dendrometer that consists of a cloth or metal tape that is mainly used to measure diameter at breast height (DBH). DBH is measured at a fixed height of 140cm4.5 feet above the ground, where it is most convenient to measure diameter. DBH is measured up high so to avoid measuring a tree's butt swell. Butt swell is where the base of the tree is unconventionally fatter than the rest of the tree. Height and diameter are used to determine the volume of a given tree, measuring above the butt swell is required to provide the most accurate measurement.