
National gene conservation unit number: CHE00105 Date of collection of the field data entered: 2024 Date of the most recent visit: 2025 Location Unit country: Switzerland Unit province or state: BL Unit department or county: Thal, Thierstein, Waldenburg Unit municipality: Beinwil (SO), Lauwil, Mümliswil-Ramiswil, Reigoldswil, Waldenbur Unit local name: Region Passwang Nord Ownership of the unit: Other Unit elevation [m a.s.l.]: 549 - 1157 Unit surface area [ha]: 295.002 Coordinates (Public coordinates): Latitude (Decimal):47.3751 \| Longitude (Decimal): 7.6744 Soil: Humic Cambisols Climate Mean monthly temperature and mean monthly precipitation² Climatic zone: Cool temperate. Environmental zone:Cool temperate and moist. Aridity index: 1.777 Species All tree species reported in the unit: *Acer pseudoplatanus* Target species for conservation in the GCU: *Acer pseudoplatanus* Unit type: Gene reserve forest, Biodiversity conservation Target species: Acer pseudoplatanus Status of the target species in the GCU: Included Category of the target species in the GCU: In situ Origin of the target species in the GCU : Autochthonous Population share (%): 50% Estimated number of reproducing trees (interval): >5001 Status of long-term viable regeneration: - Management Population management: Conservation through active intervention carried out Predominant silvicultural system: Close-to-nature forestry

National gene conservation unit number: CHE00105
Date of collection of the field data entered: 2024
Date of the most recent visit: 2025

Location

Unit country: Switzerland
Unit province or state: BL
Unit department or county: Thal, Thierstein, Waldenburg
Unit municipality: Beinwil (SO), Lauwil, Mümliswil-Ramiswil, Reigoldswil, Waldenbur
Unit local name: Region Passwang Nord
Ownership of the unit: Other
Unit elevation [m a.s.l.]: 549 - 1157
Unit surface area [ha]: 295.002
Coordinates (Public coordinates): Latitude (Decimal):47.3751 | Longitude (Decimal): 7.6744

Soil: Humic Cambisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Cool temperate.
Environmental zone:Cool temperate and moist.
Aridity index: 1.777

Species

All tree species reported in the unit: Acer pseudoplatanus
Target species for conservation in the GCU: Acer pseudoplatanus

Unit type: Gene reserve forest, Biodiversity conservation

Target species: Acer pseudoplatanus
Status of the target species in the GCU: Included
Category of the target species in the GCU: In situ
Origin of the target species in the GCU : Autochthonous
Population share (%): 50%
Estimated number of reproducing trees (interval): >5001
Status of long-term viable regeneration: -

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: Close-to-nature forestry