Example forest inventory datasets for SamsaRaLight — SamsaRaLight

These datasets provide example forest inventories used for light interception simulations with the SamsaRaLight package. Each dataset is a named list with 5 elements: trees, sensors, core_polygon, radiations, and info.

Usage

data(data_prenovel)
data(data_IRRES1)
data(data_bechefa)
data(data_cloture20)

data_prenovel

data_IRRES1

data_bechefa

data_cloture20

Format

A named list with 5 elements:

trees

A data.frame with tree-level data:

id_tree: Unique id of the tree (integer).
species: Latin species name (character).
x, y: Coordinates of the base of the tree in meters (numeric).
dbh_cm: Diameter at breast height in cm (numeric).
crown_type: Crown shape type, e.g. "P", "E", or complex types like "8E" (character).
h_m: Height of the tree trunk in meters (numeric).
hbase_m: Height of crown base in meters (numeric).
hmax_m: Height at which crown radius is maximum, NA if not used (numeric).
rn_m, rs_m, re_m, rw_m: Crown radii in meters (numeric).
crown_lad: Leaf area density of the crown (m2/m3) (numeric).

sensors

A data.frame with sensor data:

id_sensor: Unique sensor ID (integer).
x, y: Coordinates of the sensor in meters (numeric).
h_m: Height of the sensor in meters (numeric).
pacl, pacl_direct, pacl_diffuse: Proportion of above-canopy light measured at the sensor (numeric).

May be NULL if no sensors are present.

core_polygon

A data.frame with vertices of the inventory polygon:

x, y: Coordinates of polygon vertices in meters (numeric).

radiations

A data.frame of monthly radiation:

month: Month number (integer).
Hrad: Monthly radiation in MJ (numeric).
DGratio: Diffuse-to-global radiation ratio (numeric).

info

A named list with site information:

latitude, longitude: Coordinates of the site in decimal degrees (numeric).
slope: Mean slope in degrees (numeric).
aspect: Aspect in degrees from north (numeric).
north2x: Angle from north to x-axis clockwise in degrees (numeric).

An object of class list of length 5.

Source

Courbaud Benoit (INRAe LESSEM Grenoble)

Gauthier Ligot (Gembloux Agro-Bio Tech)