National gene conservation unit number: CHE00086
Population number: -

GCU
Date of collection of the field data entered: 2023
Date of the most recent visit: 2023

POPULATION
Year of Establishment of the GCU for the species: 2023
Date (or partial of date) of the most recent visit: 2023

Location

Unit country: Switzerland
Unit province or state: VS
Unit department or county: Goms,Raron
Unit municipality: Grengiols
Unit local name: Twingi
Ownership of the unit: Other
Unit elevation [m a.s.l.]: 1160 - 2178
Unit surface area [ha]: 437.414
Coordinates ( Public coordinates): Latitude (Decimal):46.3644 | Longitude (Decimal): 8.1543

Soil: Haplic Podzols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and wet.
Aridity index: 2.730

Species

All tree species growing in the unit: Picea abies
Target species for conservation in the GCU: Picea abies

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

Target species: Picea abies
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 : Unknown
Population share (%): 25%
Estimated number of reproducing trees (interval): > 5000
Status of long-term viable regeneration: -

Management
Population management: Minimum intervention allowed
Predominant silvicultural system: Close-to-natural forestry (continuous cover forest, selective logging)