Trockenheit im Wasserschloss Schweiz ¶

Laut Alpenkonvention werden Wasserknappheit und die damit verknüpften möglichen Konflikte in vielen Alpenregionen, die von Wasser aus Schnee- und Gletscherschmelze abhängen, zu einem bedeutenden Thema.

As the climate continues to change, Switzerland edges closer to a future in which extreme drought in the Alps is increasingly likely – and could push water and ecological systems to their limits. The EMERGE project studies past extreme droughts in mountain regions to help us better understand, and prepare for, potential impacts in the future.

This research aims to explore the predictability of drought at a monthly time horizon in the form of low flow in Switzerland and the European Alps by using machine learning techniques and linking large scale weather patterns with local hydrological events.

This project aims to enhance our understanding and modeling capability of regional hydrologic extremes in the Alps in a global change context.

This project deals with the statistical properties of multivariate hydrological extremes in the Alpine region, where water bodies are increasingly regulated by humans.

Mit dem VPDrought-Experiment werden die Einflüsse und Auswirkungen von Luft- und Bodentrockenheit auf den Wald wissenschaftlich untersucht. Der weltweit erstmalige Versuch in dieser Kombination und Qualität wird im Pfynwald auf der bereits bestehenden Forschungsfläche der WSL umgesetzt.

SwissSPOT ist ein Messnetz zur Beobachtung der Bodenwassersituation bis in 2m Bodentiefe an den Schweizer Flächen der Langfristigen Waldökosystemforschung (LWF)

We will use a hierarchical cross-scale approach that spans plant physiology, remote sensing, and community ecology to assess the physiological and ecological processes that underpin forest temperature regulation during hotter droughts. The work will take place at the Model Ecosystem Facility (MODOEK) and in Saillon (Valais).

We evaluate the potential of thermal imaging with unmanned aerial vehicles (UAV) to detect drought stress in Pinus sylvestris in a long-term irrigation experiment in the Pfyn forest in Valais (southern Switzerland).

SCC II - REACT: Species-specific reactions of temperate European forest trees to a changing environment

This project explores the specific impact of VPD and temperature increase on tree water use and mortality. It also investigates the potential damages of using X-ray MicroCT to track embolism in living trees.

In this project, we investigate the potential of spectral proxies, obtained from unmanned aerial vehicles (UAV) high-resolution multispectral and thermal imaging, to detect trees pre-visual drought stress responses.

Which are the main mechanisms conveying adaptation on the organ and whole tree level, how fast does acclimation occur and how long is an acclimation potential sustained?

DRYSOM assesses soil organic matter (SOM) to drought in a long-term irrigation experiment (Pfynwald). Responses range from a suppressed processing through microbial and faunal communities, decreases in carbon inputs from trees into soils, to shifts in soil carbon storage.

We want to explore a stable isotope tree-ring approach for analyzing physiological drought responses of trees. The results are expected to provide a novel diagnostic tool for understanding causes of tree decline.

Ziel des Projektes ist es, die physiologischen Prozesse zu bewerten, durch die sich Bäume in einem sich ändernden Klima anpassen und miteinander interagieren, die Folgen dieser dynamischen Prozesse für die physiologischen Reaktionen der Bäume auf klimatische Belastungen zu bestimmen und unser Verständnis dieser Auswirkungen auf langfristige Verschiebungen im internen Kohlenstoff- und Wasserkreislauf der Bäume zu verbessern.

In this project we will assess the physiological processes by which trees adjust and interact among each other under a changing climate, determine the consequences of these processes on forest responses to climatic stresses and improve our understanding of these effects on forests functioning at a large comprehensive scale.

In diesem Projekt untersuchen wir mögliche Ursachen für die Auswirkungen der Sommerdürre 2018 auf die Vitalität von Buchen im Schweizer Mittelland und Jura.

FoFiX tackles questions on the emerging fire hazard in regions not yet affected by forest fires, e. g. mountain regions of Central Europe.

Provide a simplified Swiss-wide forest fire-related characterization of forest fuel types and calculate and analyse drought and fire-related remote sensing indices derived from multispectral Landsat and Sentinel-2 data.

Development of a data-driven nearest neighbour model for the daily forest fire danger rating which may be used by the operators as second opinion provider.