allometry.data: Sapwood area and depth, and bark allometric measurements
| allometry.data | R Documentation |
Sapwood area and depth, and bark allometric measurements
Description
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:
Saparea_cm = \pi (DBH/2 - Bark_cm)^2 - \pi (DBH/2 - Bark_cm - Sap_cm)
Usage
allometry.data
Format
Provides a data.frame with 651 rows and 8 columns.
- Plot
Measurement plot (
character)- treeID
Unique tree ID (
character)- Species
Assessed species (
character)- DBH_cm
Diameter at breast height (1.3
m) incm(numeric)- Bark_cm
Bark thickness in
cm(numeric)- Sap_cm
Depth of sapwood in
cm(numeric)- Saparea_cm2
Sapwood area in
cm^2(numeric)- Site
Measurement site
character)
Details
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
