Sapwood area and depth, and bark allometric measurements

Source: R/data.R

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: $$Saparea_cm = \pi (DBH/2 - Bark_cm)^2 - \pi (DBH/2 - Bark_cm - Sap_cm)$$

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 \(m\)) in \(cm\) (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