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Description of the research area Seehornwald-Davos

The area has the coordinates 46 ° 48'55.2 "N, 9 ° 51'21.3" E. It is located at 1639 meters above sea level in the middle layers of the pre-alpine belt in the eastern Swiss Alps.

The coniferous forest is dominated by Norway spruce (Picea abies (L.) Karst.) with a maximum crown height of 27 m and a leaf area index of about 4 m2 m -2. The dominant trees are between 250 and 400 years old. The understory vegetation is rather patchy and covers about 30% of the forest floor. It consists of dwarf shrubs, mainly Vaccinium myrtillus and Vaccinium gaulterioides together with various mosses.

The research area offers a unique combination of continuous long-term measurements: regional climate, CO2 and microclimate profiles through the forest, tree physiological measurements of sap flow and changes in trunk diameter, eddy covariance flow measurements, continuous measurements of atmospheric NO, NO2 and O3-concentrations, as well as various properties of the vegetation (such as crown defoliation, litter fall, etc.) and soil structure. You can find more information about the equipment of the Seehornwald-Davos research area here.

The very long duration of most of the measurements predestines this area for investigations into the (missing) links between climate change and tree physiological adaptations. But it is also ideal for researching questions about the carbon balance of the ecosystem relative to soil properties and tree physiology (under changing environmental conditions).

You can find more details about the research area Seehornwald Davos at:

  • site description at ETHZ
  • site description at LWF