National gene conservation unit number: CHE00033
Population number: -

GCU
Date of collection of the field data entered: 2022
Date of the most recent visit: 2022

POPULATION
Year of Establishment of the GCU for the species: 2020
Date (or partial of 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 growing 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: -