feat: operationalize Flemish land and nature themes

2026-07-17 22:38:25 +02:00
parent 0718d0ebba
commit c787fb2184
27 changed files with 2010 additions and 12 deletions
@@ -480,3 +480,31 @@ normalized properties are:
 Null means the provider did not expose a structured value. It is never
 converted to zero. Dataset metadata records exact counts, measurement range,
 scope, attribution and `volume_supported=false`.
+# Operational Flanders theme specification
+
+## Land-use forest and agriculture masks
+
+The governed 2025 Landgebruik Vlaanderen v3 coverage is categorical. GeoIntel
+derives two product-specific binary rasters only after validating integer
+source classes: forest class 12, and agricultural land-use classes 13 and 14.
+The measurement is intersected grid area in hectares at 10 m resolution.
+Forest volume, tree count, legal forest status, agricultural crop declaration,
+ownership and zoning are unsupported. The agricultural mask does not replace
+the temporal ALZ parcel series.
+
+## BWK and Natura 2000 polygons
+
+The `bwk_natura2000_2025` product follows stable allowlisted WFS 2.0 pagination,
+clips geometries in Lambert 72 and persists through DatasetService. Official
+`EVAL`, `EENH1..8`, `HAB1..5`, `PHAB1..5`, `HERK`, `HERKHAB`,
+`HERKPHAB` and `HABLEGENDE` remain available. BWK class areas are exact
+intersections; PHAB-derived habitat areas remain estimates.
+
+## DOV soil polygons
+
+The `dov_soil_types` product persists polygon geometry as EPSG:4326 and
+clips/measures in EPSG:31370. Soil type, unified type, series, generalized
+legend, texture, drainage, profile, substrate and region remain source
+attributes. The observation is the 1949-1971 field-survey period and the
+digital edition is June 2017. It is an authoritative historical baseline at
+1:20,000, not evidence of current drainage or parcel-level site conditions.