====== Basal Area and Trees Per Acre Table for Prism Sampling ======
^Plots (trees) ^^^Plots (trees) ^^|
^DBH ^Basal Area ^Per Acre^DBH ^Basal Area ^Per Acre|
^Inches^Sq. Feet ^BAF = 10^Inches^Sq. Feet ^BAF = 10|
|4 |.087 |114.94 |18 |1.767 |5.66 |
|5 |.136 |73.53 |19 |1.969 |5.08 |
|6 |.196 |51.02 |20 |2.182 |4.58 |
|7 |.267 |37.45 |22 |2.640 |3.79 |
|8 |.349 |28.65 |24 |3.142 |3.18 |
|9 |.442 |22.62 |26 |3.69 |2.71 |
|10 |.545 |18.35 |28 |4.28 |2.34 |
|11 |.660 |15.15 |30 |4.91 |2.04 |
|12 |.785 |12.74 |32 |5.59 |1.79 |
|13 |.922 |10.84 |34 |6.31 |1.58 |
|14 |1.069 |9.35 |36 |7.07 |1.41 |
|15 |1.227 |8.15 |38 |7.88 |1.27 |
|16 |1.396 |7.16 |40 |8.73 |1.14 |
|17 |1.576 |6.35 | | | |
For a prism calibrated to BAF = 10, a tree with a DBH of
10 inches represents a plot of (1/18.35) of an acre.\\
\\
For other prisms calculate the plots per acre by using this
formula: \\
Plots per Acre = (BAF of prism/Basal Area)\\
\\
To obtain Basal Area, multiply (DBH)2 by .00545\\
Example no. 1: (10")2 X .00545 = .545sq.ft.\\
Example no. 2: (16")2 X .00545 = 1.395sq.ft\\