Choosing the Basal Area Factor. When it comes to choosing a proper BAF for a point sample, it is important to remember that a larger BAF will tally fewer trees. The goal is to be able to as few trees as possible while still getting a representative sample of the stand. Thus, a larger BAF can be used for a stand with larger trees and a smaller.. Basal area factor is the number of units of basal area per acre (or per hectare) represented by each tree. The formula for basal area = (3.1416 x DBH2)/(4 x 144). This formula simplifies to: basal area = 0.005454 x DBH2 0.005454 is called the "foresters constant", which converts inches into square feet.
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For foresters, basal area is one of the most easily understood terms, but it may also be one of the most misused terms in forestry. This publication will help you better understand what basal area is and why it is an important forest measurement.. In the South, a 10-factor gauge or prism is most commonly used. With a 10-factor gauge or prism.. Basal area is often expressed as being on an acre basis. It tells us the square foot volume of standing timber for that acre. This is then used to help gauge the density of growth on the landscape.. So, 9 trees counted as 'In' would mean a basal area of 90 (9 trees multiplied by 10-factor prism) for the acre. You may hear the phrase.
