BD Forêt

Download the BD Forêt data for a French Department. This function downloads the polygons of forest vegetation in France.

Usage

fd_forest_france(department, path_metadata = NULL, version = 2, quiet = TRUE)

Arguments

department: a character string of length 1 with the name of a French department (see examples)
path_metadata: a character string of length 1 with the path to store the metadata of the BD Forêt database. The default path_metadata = NULL does not download the metadata
version: the version number of the BD Forêt data. Either 1 or 2 (see details)
quiet: if TRUE (the default), suppress status messages, and the progress bar

Value

A sf object with POLYGON geometry

Details

The BD Forêt is a database where the forest cover of France is stored by department, with the spatial distribution of tree species in the country.

The BD Forêt version 1 was developed by photointerpretation of infrared color aerial images with a minimum mapped area of 2.25 hectares. The year of reference for each department varies between 1987 and 2002. The version 1 contains the following variables:

- DEP: department name

- CYCLE: order number of the departmental revision

- ANREF: year of reference of the data

- TFIFN: code of the departalmental type of vegetation cover. The nomenclature is specific to each department

- LIBELLE: departamental type of vegetation cover. The nomenclature is specific to each department

- LIBELLE2: departamental type of vegetation cover in capital letters. The nomenclature is specific to each department

- TYPN: code of the national type of vegetation cover

- NOMB_TYPN: national type of vegetation cover

The BD Forêt version 2 was developed between 2007 and 2018 by photointerpretation of color infrared images from the BD ORTHO. It assigns a vegetation formation type to each mapped area larger than 5,000\(m^2\). This version contains the variables:

- ID: surface object identifier

- CODE_TFV: alphanumeric code of the vegetation formation

- TFV: vegetation formation type

- TFV_G11: type of coverage and predominant composition of the vegetation in 11 groups

- ESSENCE: description of tree species according to the unique basic nomenclature for all departments

For more information, download the metadata using the argument path_metadata (information in French).

References

https://geoservices.ign.fr/bdforet

Examples

# \donttest{
# Download BD Foret V2 for the department of Ardèche
ardeche_bdforet2_sf <- fd_forest_france(department = "Ardeche") # works (prefered)
ardeche_bdforet2_sf <- fd_forest_france(department = "ardèche") # also works
# }