Returns raw allometric data obtained for 14 spepcies from several North-American sites.
These data are used to develop allometric equations for the parameters sapwood area and depth, as well as bark thickness.
A detailed description on collection method and sites is provided in Pappas et al. (2021; in prep.).
The parameters were measured along an increment core extracted at breast height (DBH, 1.3 m) with a Haglof borer.
Bark thickness (Bark_cm
) was measured directly, while sapwood depth (Sap_cm
) was estimated through discoloration and translucence.
Sapwood area (Saparea_cm2
was then calculated using:
Sapareacm=π(DBH/2−Barkcm)2−π(DBH/2−Barkcm−Sapcm)
allometry.data
Provides a data.frame with 651 rows and 8 columns.
Measurement plot (character
)
Unique tree ID (character
)
Assessed species (character
)
Diameter at breast height (1.3 m) in cm (numeric
)
Bark thickness in cm (numeric
)
Depth of sapwood in cm (numeric
)
Sapwood area in cm2 (numeric
)
Measurement site character
)
Currently included species are:
Abies balsamea
Acer rubrum
Acer saccharum
Betula alleghaniensis
Betula papyrifera
Fagus grandifolia
Fraxinus nigra
Picea glauca
Picea mariana
Picea rubens
Pinus banksiana
Populus tremuloides
Quercus rubra
Thuja occidentalis