Environmentally Sensitive Areas
For Each Tree to Be Removed | Minimum Number and Caliper of Replacement Trees |
|---|---|
One, 12 to 18 inch dbh | Two, 2 inch dbh |
One, 18 to 24 inch dbh | Three, 2 inch dbh |
One, 24 to 36 inch dbh | Four, 2 inch dbh |
One, greater than 36 inch dbh | Six, 2 inch dbh |
V = v x [4 x (A/n)] | ||
Where: | ||
V | = | Estimated total number of trees to be removed from the proposed area of disturbance |
v | = | Sum of trees in individual category from sample plots |
A | = | Total number of acres of proposed disturbance |
n | = | Number of sample plots |
For example, on 10 acres of proposed disturbance with 10 sample plots each 1/4 acre in size, and two 12-inch dbh trees tallied in each sample plot for a total of 20 12-inch dbh trees across all plots, the total number of 12-inch dbh trees to be removed is 80, as follows: | ||
V | = | 20 x [4 x (10/10)] |
V | = | 20 x (4 x 1) |
V | = | 80 (12-inch trees to be removed from the proposed area of disturbance) |
The number of replacement trees would be 160 2-inch dbh trees | ||
This formula is repeated for sampled trees in each category | ||