
National gene conservation unit number: CHE00033 Date of collection of the field data entered: 2022 Date of the most recent visit: 2022 Location Unit country: Switzerland Unit province or state: BL/SO Unit department or county: Laufen Unit municipality: Roeschenz Unit local name: Gebiet Chall Ownership of the unit: Other Unit elevation [m a.s.l.]: 349 - 828 Unit surface area [ha]: 293.6 Coordinates (Public coordinates): Latitude (Decimal):47.4307 \| Longitude (Decimal): 7.4837 Soil: Eutric Cambisols Climate Mean monthly temperature and mean monthly precipitation² Climatic zone: Cool temperate. Environmental zone:Cool temperate and moist. Aridity index: 1.468 Species All tree species reported in the unit: *Sorbus torminalis* Target species for conservation in the GCU: *Sorbus torminalis* Unit type: Gene reserve forest, Biodiversity conservation (habitats AND/or species) Target species: Sorbus torminalis 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 : Autochtonous Population share (%): 75% Estimated number of reproducing trees (interval): > 5000 Status of long-term viable regeneration: - Management Population management: Conservation through active intervention carried out Predominant silvicultural system: -

National gene conservation unit number: CHE00033
Date of collection of the field data entered: 2022
Date of the most recent visit: 2022

Location

Unit country: Switzerland
Unit province or state: BL/SO
Unit department or county: Laufen
Unit municipality: Roeschenz
Unit local name: Gebiet Chall
Ownership of the unit: Other
Unit elevation [m a.s.l.]: 349 - 828
Unit surface area [ha]: 293.6
Coordinates (Public coordinates): Latitude (Decimal):47.4307 | Longitude (Decimal): 7.4837

Soil: Eutric Cambisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Cool temperate.
Environmental zone:Cool temperate and moist.
Aridity index: 1.468

Species

All tree species reported in the unit: Sorbus torminalis
Target species for conservation in the GCU: Sorbus torminalis

Unit type: Gene reserve forest, Biodiversity conservation (habitats AND/or species)

Target species: Sorbus torminalis
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 : Autochtonous
Population share (%): 75%
Estimated number of reproducing trees (interval): > 5000
Status of long-term viable regeneration: -

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: -