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BD Forêt

fd_forest_france.Rd

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 = FALSE)

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, suppress any message or 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:

  • 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

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:

  • 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

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

References

https://geoservices.ign.fr/bdforet

See also

metadata_forestdata for a list of possible Department names

Examples

# \donttest{
# Download BD Foret V2 for the department of Ardèche
ardeche_bdforet1_sf <- fd_forest_france(department = "Ardeche", version = 1)
#> ℹ Downloading data...
#> ✔ Downloaded [16.2s]
#> 
#> ℹ Preparing data...
#> ✔ Prepared [8ms]
#> 
#> ✔ Visit https://geoservices.ign.fr/bdforet for more information on the dataset
# }