OCS2D: Land occupation in 2 dimensions - Simplified version in 4 posts or 21 posts - Lille SCOT (MEL+CCPC)

OCS2D is the production of a two-dimensional land cover database in the Scot de Lille area. The Scot comprises two entities:

• The European Metropolis of Lille (MEL), which brings together 95 municipalities for about one million inhabitants, territory with urban dominance (730km2 with buffer);
• The Community of Communes Pévèle en Carembault (CCPC), which consists of 38 communes with a population of around 100000 inhabitants. The landscape is mainly characterised by rural areas (350 km2 with buffer).

The MEL 2020 orthophotography is the reference support for the 2020 update of the OCS 2D database 2005-2015 developed by photo-interpretation in 2017.

The basic nomenclature

See metadata sheet OCS2D: Land cover in 2 dimensions - SCoT - 2005 to 2020

(see user guide (available as a resource)):

The nomenclature "4 items" (resources attached)

(see user guide (available as a resource)):

the 4-item nomenclature is a simplified version that meets the need to create indicators shared by the various players in the territory. They co-constructed this nomenclature, which provides the first shared indicators available from the OCS2D data, by breaking it down into three generalised spaces: artificialized, agricultural, and natural. It should also be noted that, under the heading ‘artificialised’, infrastructure has been differentiated.

The CS-US table found on page 15 of the "user guide" resource illustrates the distribution.

There are 7 CS-US7.0.0 associations that have been classified either in artificial (urban context) or in natural, thanks to a proximity analysis.

1. Artificial space
2. Agricultural area
3. Natural area
4. Infrastructure

Matching tables:

• G_OCS2D.TA_OCS2D_4_POSTES_2005_SCOT - Simplified OCS2D in 4 posts for 2005.
• G_OCS2D.TA_OCS2D_4_POSTES_2015_SCOT - simplified OCS2D in 4 posts for 2015.
• G_OCS2D.TA_OCS2D_4_POSTES_2020_SCOT - simplified OCS2D in 4 posts for 2020.

The nomenclature "21 items"

(see user guide (available as a resource)):

The nomenclature ‘21 postes’ was devised for the creation of the atlas, with a cross between the CS and the US (gives atlases in the link to the geo2france metadata). It cannot be used for statistical purposes, as some class groupings do not match all possible uses of the OCS2D data.

1. Habitat building
2. Building of agricultural holdings
3. Commercial building
4. Industrial buildings and other economic activities
5. Building services and transport
6. Other frames
7. Roads
8. Railways
9. Airport areas
10. Navigable canals and rivers
11. Non-vegetated areas of habitat
12. Vegetated areas of the habitat
13. Other artificialised non-vegetated spaces
14. Other plant-based artificial spaces
15. Grasslands
16. Annual crops
17. Other agricultural land
18. Water surfaces
19. Wooded areas
20. Non-wooded vegetated areas
21. Non-vegetated areas

Tables available:

• G_OCS2D.TA_OCS2D_21_POSTES_2005_SCOT - OCS2D simplified into 21 posts for 2005.
• G_OCS2D.TA_OCS2D_21_POSTES_2015_SCOT - OCS2D simplified into 21 posts for 2015.
• G_OCS2D.TA_OCS2D_21_POSTES_2020_SCOT - OCS2D simplified into 21 posts for 2020.