feat: add official modern Mol land-use series

2026-07-14 17:51:24 +02:00
parent 8f27c5cc6f
commit b35f135fea
14 changed files with 1199 additions and 20 deletions
@@ -63,6 +63,41 @@ The operator uses standards-compliant WFS 2.0 XML POST requests. This keeps
 the spatial/class filters server-side without exposing a long XML filter in a
 GET query, which the public gateway rejects.

+### Mol modern land use
+
+`scripts/provision_official_landuse_timeseries.py` uses the public Departement
+Omgeving/MercatorNet WCS to retrieve the harmonized version 3 land-use maps for
+2013, 2016, 2019, 2022 and 2025. The source is a categorical 10 m GeoTIFF in
+Belgian Lambert 72 (`EPSG:31370`) with 19 documented classes. GeoIntel currently
+derives only class `12` (`Bos`) as the operational forest theme.
+
+Every source raster is clipped against the explicit official boundary,
+validated for integer classes, CRS and resolution, checksummed and retained in
+persistent operator storage. Forest cells are polygonized and clipped in
+`EPSG:31370`, then transformed to canonical `EPSG:4326` and uploaded through
+DatasetService/VectorFeatureService. The raw raster remains the provenance
+artifact; the persisted polygons provide rectangle selection, PostGIS area
+aggregation and temporal comparison without a parallel query path.
+All cells touching the requested boundary are considered before the exact
+metric geometry clip; NoData cells are excluded and counted in the manifest.
+
+The modern series key is
+`department-omgeving:land-use:forest:mol`. It remains separate from
+`digitaal-vlaanderen:historical-landuse:forest:mol`: the 1778-1969
+cartographic editions and the harmonized 2013-2025 10 m land-use maps are not
+presented as one continuous measurement method. Raster-derived polygon
+identities are unstable, so GeoIntel compares hectares and never invents
+added/removed forest objects.
+
+Official catalogues:
+
+- https://www.vlaanderen.be/datavindplaats/catalogus/landgebruik-vlaanderen-toestand-2013
+- https://www.vlaanderen.be/datavindplaats/catalogus/landgebruik-vlaanderen-toestand-2016
+- https://www.vlaanderen.be/datavindplaats/catalogus/landgebruik-vlaanderen-toestand-2019
+- https://www.vlaanderen.be/datavindplaats/catalogus/landgebruik-vlaanderen-toestand-2022
+- https://www.vlaanderen.be/datavindplaats/catalogus/landgebruik-vlaanderen-toestand-2025
+- https://www.vlaanderen.be/statistiek-vlaanderen/ruimtegebruik/landgebruik/metadata-landgebruik
+
 ## OSM

 - Naam: OpenStreetMap