FORESTRY
GENERAL FORESTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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diameter and usable
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diameter and total
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defect and total
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defect and usable
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Detailed explanation-1: -Tree diameter is usually measured at 4.5 feet (ft) above ground level. Measurement at this height is referred to as diameter at breast height or DBH. DBH can be measured with a specially calibrated tape measure called a diameter tape (d-tape) available from most arborist or forestry supply dealers.
Detailed explanation-2: -There are three basic parameters commonly measured to characterize the size of a single trunk tree: tree height measurement, tree girth measurement, and tree crown measurement. Foresters also perform tree volume measurements.
Detailed explanation-3: -Volume is determined by diameter at breast height (DBH) and merchantable height measurements. For example, a tree with a DBH of 22 inches and 32 feet (4 bolts) of merchantable height will yield approximately 290 board feet.