redoakvol {datana}

Contains tree-level merchantable volume data for red oak (Quercus rubra).

Description

Merchantable volume of 236 sample trees of Red oak from Pennsylvania (USA).

Usage

redoakvol

Format

tree

Tree number.

dbh

Diameter at breast height, in cm.

merc.h

Merchantable height to a 4.5 inch dob, in m.

merc.vol

Merchantable peeled volume to a minimum 4.5-inch outside bark diameter, in m^{3}.

Source

The data are provided courtesy of Prof. Timothy Gregoire at the School of Forestry and Environmental Studies at Yale University (New Haven, CT, USA).

References

- Beers TW, Gingrich SF. 1958. Construction of Cubic-foot Volume Tables for Red Oak in Pennsylvania. Journal of Forestry 56(3):210-214.

- Moser JW, Beers TW. 1969. Parameter Estimation in Nonlinear Volume Equations. Journal of Forestry 67(12):878-879.

Examples

head(redoakvol)