Description Usage Arguments Value Author(s)
This function use BEC(or FIZ) and species-specific taper equation to
calculate tree volume. Before calculation, the function adjusts height
for broken top trees: scenario 1 (D scenario): availability of DBH, DIB at broken height;
scenario 2 (H scenario): availability of projected tree height in the field.
This functions also assigns the volume multiplier adjustment.
The function is equivalent to vir_vol_tree_2011
macro in orignal SAS compiler.
1 2 | VRIVolTree(treeData, equation, logMinLength, stumpHeight, breastHeight,
UTOPDIB)
|
treeData |
data.table, An output from |
equation |
character, Specifies which taper equation form will be used to calculate diameter inside bark for a given height. Must be either KBEC or KFIZ3. If missing, default is KBEC |
logMinLength |
numeric, Specifies a minimum length for a log. |
stumpHeight |
numeric, Specifies stump height. If missing, 0.3 m will be used. |
breastHeight |
numeric, Specifies breast height. 1.3 m will be used when this arguement is missing. |
UTOPDIB |
numeric, Specifies minimum merchantable inside bark diameter. 10 cm is used as a default. |
A data table
Yong Luo
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