FORESTRY
GENERAL FORESTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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100 square feet per acre
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100 cubic feet per acre
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50 cubic feet per acre
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50 square feet per acre
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Detailed explanation-1: -To estimate the Basal Area simply multiply the number of counted trees by the Basal Area Factor (e.g. 5, 8 or 10). You should conduct as many sweeps around the stand of trees as you can, as this will provide a more accurate estimate when averaged over the stand.
Detailed explanation-2: -How do you calculate basal area? Basal area is calculated with the formula dbH^2 x 0.005454, where dbH is the diameter in inches at breast height (4.5 feet from the ground). 0.005454 is the forester’s constant, which converts from inches to squared feet.
Detailed explanation-3: -To determine Tree Basal Area simply measure the diameter at breast height in centimetres (DBHOB) and calculate the basal area (m2) using an equation based on the formula for the area of a circle (area = p r2 where r = radius and p = 3.142 ) and the formula for radius (r=diameter/2 = DBH/2).