Land use mapping

This plugin feature offers the functionality to map land use datasets to Talsim land use categories. This plugin currently supports two German data sources:

• ATKIS - Automatisiertes Topographisch-Kartographisches Informationssystem (e.g. ATKIS NRW)

• LBM-DE (2021) - Digitales Landbedeckungsmodell für Deutschland, Stand 2021

Executing the Plugin

ATKIS Data

Input Requirements:

Provide a folder containing all relevant ATKIS layers (e.g., veg01_f, sie01_f, etc.)

Processing:

• Plugin automatically detects and merges necessary files into a single land use layer

• Optional: Specify a clipping layer to limit the spatial extent

• Maps the ATKIS land use types to Talsim-compatible categories using the fields “OBJART_TXT”, “FKT”, and “VEG”. Find the complete ATKIS to Talsim mapping table here.

LBM-DE (2021) Data

Input Requirements:

Download data from the link above and add the layer to your current QGIS project

Processing:

• Specify the layer containing LBM data

• Optional: Apply a clipping layer to limit the input extent

• Mapping uses fields “LB_AKT” (land cover type) and “SIE_AKT” (imperviousness). Find the complete LBM to Talsim mapping table here.

Output Results

The output is a GeoPackage containing two land use layers:

• One layer with all land use polygons, where the mapped Talsim land use type is stored in the column “OBJART_NEU”.

• A second, dissolved layer where polygons with the same land use type are aggregated. This layer can be used as input for the HRU Calculation.