A portolan/stac catalog of every known available non-AI generated field boundary.
For use in the application procedure of the Integrated Administration and Control System (IACS), digital data layers are required that represent the current situation of agricultural use with the required accuracy. The field block is a contiguous agricultural area of one or more farmers surrounded by permanent boundaries. The field block thus contains information on the geographical location of the outer boundaries of the agricultural area. Reference parcels are uniquely numbered throughout Germany (Feldblockident - FBI). They also have a field block size (maximum eligible area) and a land use category.
The following field block types exist:
The field blocks are classified separately according to the main land uses of arable land (AL), grassland (GL), permanent crops (DA, OB, WB), including agroforestry systems with an approved utilization concept and according to the BNK for no "agricultural land" (NW, EF and PK) and others.
Landscape elements (LE) are considered part of the eligible agricultural area under defined conditions. In Thuringia, these permanent conditional features are designated as a separate field block (FB) and are therefore part of the Thuringian area reference system (field block reference). They must have a clear reference to an UAA (agricultural land), i.e. they are located within an arable, permanent grassland or permanent crop area or border directly on it.
To produce the DGK-Lw, (official) orthophotos from the Thuringian Land Registry and Surveying Administration (TLBG) and orthophotos from the TLLLR's own aerial surveys are interpreted. The origin of this image data is 50% of the state area each year, so that up-to-date image data is available for the entire Thuringian state area every year.
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_th/latest/de_th.parquet. All editions together through the S3 glob s3://ftw/harmonized-field-data/de_th/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):
valid_year: 2026kond_le: Falseadmin:country_code: DEadmin:subdivision_code: THQuery the published files in place with DuckDB; nothing needs downloading first.
This catalog is a mirror: the data is produced and licensed by Thüringer Landesamt für Landwirtschaft und Ländlichen Raum 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 0.2.15:
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: © GDI-Th
| binary |
A geometry that reflects the footprint of the field, usually a Polygon. Stored in the source CRS (see proj:code), not reprojected. (spec) |
flik_last_year | list<element: string> | FLIK identifier(s) of the previous year, split on , (source column FBI_VJ, per the fiboa data survey) |
id | string | An identifier for the field. (spec) |
metrics:area | float | Area of the field, in square meters (m²). Must be > 0 and <= 1,000,000,000. (spec) |
area_last_year | float | Area in the previous year, in ha (source column FB_FL_VJ, per the fiboa data survey) |
bnk | string | Category of main land use, short code (source column BNK, per the fiboa data survey) |
afo | bool | Whether the field block is an agroforestry system (J → true, otherwise false) (source column AFO, per the fiboa data survey) |
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) |