A portolan/stac catalog of every known available non-AI generated field boundary.
A field block (German: "Feldblock") is a contiguous agricultural area surrounded by permanent boundaries, which is cultivated by one or more farmers with one or more crops, is fully or partially set aside or is fully or partially taken out of production.
Browse this collection in the data browser, or start from the AGENTS.md for tested queries.
The latest edition is also available at a stable path: de_nds_block/latest/de_nds_block.parquet. All editions together through the S3 glob s3://ftw/harmonized-field-data/de_nds_block/year=*/*.parquet (see the AGENTS.md for the DuckDB setup; plain https cannot expand *).
Properties that are the same for every field are stored once, in the GeoParquet file's collection metadata rather than as columns (latest edition shown; a client reading only the table will not see them):
ant_jahr: 2026admin:country_code: DEadmin:subdivision_code: NIQuery the published files in place with DuckDB; nothing needs downloading first.
This catalog is a mirror: the data is produced and licensed by ML/SLA Niedersachsen and republished here as cloud-native GeoParquet and PMTiles by Fields of the World. Each edition was downloaded from the source and converted with fiboa-cli 0.21.0, vecorel-cli 0.2.16:
The conversion is deterministic and lives in fiboa-cli; changes to how a column is mapped are made there, not in this catalog.
DL-DE-BY-2.0. Attribution: © ML/SLA Niedersachsen (2024), DL-DE-BY-2.0 (www.govdata.de/DL-DE-BY-2.0), Daten bearbeitet
metrics:perimeter | float | Perimeter of the field, in meters (m). Must be > 0 and <= 125,000. (spec) |
geometry | binary | A geometry that reflects the footprint of the field, usually a Polygon. Stored in the source CRS (see proj:code), not reprojected. (spec) |
bbox | struct<xmin: double, ymin: double, xmax: double, ymax: double> | The bounding box of the field. Per-feature covering column (GeoParquet 1.1), in the source CRS. (spec) |