BD Forêt® V2 de Troyes Champagne Métropole

BD Forest® version 2 was developed between 2007 and 2018 by photo-interpretation of colour infrared images of the ORTHO® BD.
It assigns to each mapped beach of more than 5000 m2 a type of plant formation.
Its main features are as follows:
- A national nomenclature of 32 items based on a hierarchical decomposition of criteria, distinguishing, for example, pure stands from the main forest species in the French forest;
- A type of plant formation assigned to each mapped range greater than or equal to 50 ares;
- A layer geometrically compatible with the RGE® and therefore in perfect coherence with the vegetation layer of the TOPO® comic strip.

The areas described in the Forest® version 2.0 comic book are essentially natural and semi-natural areas:
• closed forests;
• open forests;
• poplar plantations;
• heathland (maquis, scrubland, etc.);
• herbaceous formations (alpine lawn, pastoral lawn, ...).

The objects present in the base are defined by an area greater than or equal to 5 000 m2 (i.e. 0.5 hectares or 50 ares), according to the following thresholds:
• exclusion of areas whose land use is exclusively agricultural;
• width of at least 20 metres;
• vegetation cover rate greater than or equal to 10%.
These thresholds come from the current international definition of forest (source FAO 2004).

The discrimination of species present in the forest is then carried out according to the following rules:
• three classes of tree cover rates capable of reaching a height greater than 5 metres at maturity in situ: less than 10% (non-forest), between 10 and 40% (open forest), greater than or equal to 40% (closed forest);
• a threshold of 75% of the canopy of trees with access to light to distinguish a stand in pure composition or in pure essence.

INFORMATION: DATA GAME IS AVAILABLE TO FORMAT *.GPKG. THE NUMBER OF REGISTRATION IS IN THE ORDER OF: 1785

For more details, see the content description: [https://geoservices.ign.fr/sites/default/files/2021-06/DC_BDForet_2-0.pdf]