UDTR — Radar mondial des droits de la Nature

Impact of soil water holding capacity on forest vitality in Swiss plenter forest

Identification

Clé publique

radar:r-6d34be8d53da0ab5e663df78959a6936

Auteurs

Kühnhanss, Tobias

Année déclarée

2025

Langue déclarée

en

Type source

Text

Première détection

2026-11-13T15:28:31.315960+00:00

Dernière observation des métadonnées

2026-11-13T15:28:31.315960+00:00

Dernière vérification HTTP

Non effectuée

Résumé documentaire — langue originale

Forestry in the Swiss Alpine regions is increasingly under pressure due to more frequent heatwaves and dry conditions. These events affect the vitality of plenter forests (uneven-aged mixed stands), which are considered an important part of clear-to-nature silvigenesis. After a prolonged dry period, the soil available water capacity (AWC) becomes a crucial factor for tree water supply. To investigate the effects of AWC on the vitality of the three main tree species (Fagus sylvactica, Abies alba and Picea abies) in Swiss plenter forests, I analyzed long-term data using a linear mixed model. Forest vitality was assessed by focusing on basal area increment (BAI) at the stand level and crown volume growth (DCV) at the individual tree level. The results showed that the BAI of Fagus sylvatica and Abies alba was not significantly influenced by AWC, whereas Picea abies exhibited a positive response. In contrast, all Species displayed reduced DCV with increasing AWC. These contrasting results highlight the importance of the level of observation in forestry, as stand-level does not reflect tree-level DCV. These findings underscore the relevance of considering AWC in adaptive forest management strategies under climate change. Given the drought-sensitivity of Picea abies, their extent in dry and warm areas should be reconsidered. Managing Picea abies on soils with high AWC results in higher vitality. Furthermore, the complementary effects within plenter forests support the continued presence of Picea abies as part of a climate-resilient forest

Identifiants

DOI

10.5167/uzh-436311

Repères documentaires

Famille documentaire

unknown

Types déclarés par les sources

Text

Éditeurs

University of Zurich

Les mentions d’entités ne constituent pas une preuve de reconnaissance juridique. La juridiction étudiée est distincte du pays d’affiliation des auteurs.

Sources

DataCite · Document 1

• Document · https://www.zora.uzh.ch/handle/20.500.14742/249988

Statut documentaire

Pertinence à examiner

Bibliothèque

Cette identité n’est pas encore intégrée à la Bibliothèque juridique.