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ETH Zurich - D-USYS - IAS
- Grassland Group - Research Strategy - Current Projects - Past Projects - FACE
Swiss FACE Experiment
Contact
Prof. Josef Nösberger
Institut f. Pflanzenwissenschaften
Universitätstrasse 2
ETH Zürich, LFW A 7
CH-8092 Zürich
Phone: +41 44 632 38 81
Email »»
The experiment was carried out to understand the response of grassland ecosystems to elevated atmospheric CO2 partial pressures.
The Swiss FACE experiment demonstrated that CO2-induced changes in the botanical composition, in the dry matter allocation and composition, and in the symbiotic N2 fixation lead to multiple changes in a grassland ecosystem.
Those changes increased nitrogen and carbon input and sequestration into the ecosystem; such an input could act through a feed-back mechanism towards equilibrating the C/N ratio of the whole ecosystem.
However, the driving mechanisms are only poorly understood. Long-term experiments with different management treatments must be conducted to allow a realistic assessment of the long-term response of grassland to elevated pCO2.
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