Vegetation areas [BD TOPO®] - Department of La Manche

Definition of IGN: Natural or non-natural plant space, differentiated in particular according to the tree cover.

Glossary:

• Forest: Land with an area of more than 5 000 m2 with an absolute tree cover rate equal to or greater than
  10% over a width of at least 20 metres with trees reaching or capable of reaching a height greater than
  5 meters in situ. With the exception of cultivated orchards.
  A consequence of this definition is that wooded areas with an area between 80 m2 and 5 000 m2
  will be classified in the attribute value "Wood".
• Wooded cover: Absolute cover of a stand: Planimetric surface of the vertical projection of crowns of trees of the
  settlement.
  Absolute cover rate:
  "quotient of the absolute cover of the stand by the surface of the site".

Relative cover rate of underpopulation:
Quotient of absolute canopy cover of undercrowding by canopy cover

absolute of settlement.

Free cover:
"covered stand with access to light".

• Lande:
  Land with an area of more than 5 000 m2 with a recovery rate of natural or semi-natural vegetation (woody or non-woody) of more than 10% and a relative recovery rate of low woody (shrubs and

sub-shrubs) not less than 25 %.
The tree recovery rate shall not exceed 10 %.
The

heathland shows no evidence of regular human intervention of the agricultural type (closure presence translated as

a visible parcel).
Extensive rangelands, brownfields, vacant lots, scrublands and

non-woody maquis...