FORESTRY
GENERAL FORESTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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80 sq. ft
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8 sq. ft
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80 sq. inches
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800 sq. ft
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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: -With a prism you need to use the prism as the centre of the plot and rotate around it. Multiply the number of in trees by 2 to get the basal area for the stand in square meters per ha. (For example, if you count 20 trees, your basal area is 40 square metres per hectare).
Detailed explanation-3: -The basal area of a tree is defined as the cross-sectional area (usually in square feet) of a single tree at breast height, or 4. feet above ground. The diameter of a tree at 4. feet above the ground is called diameter at breast height (DBH).