Description: Das Projekt "Effect- and Risk-Assessment of Ozone Air Pollution on Forest Vegetation in Switzerland" wird vom Umweltbundesamt gefördert und von Eidgenössische Forschungsanstalt für Wald, Schnee und Landschaft durchgeführt. Many studies investigating the negative impacts of ozone on biomass production and physiological functions have demonstrated the relationships between ozone exposure and reductions in both growth and physiological gas exchange leading to an increasing interest in effects of ozone exposure expressed as a critical cumulative exposure of 10000 ppb hrs above the threshold of 40 ppb (AOT40). Ozone effects on plants, mainly depend on atmospheric transport and stomatal uptake. Thus ozone risk assessments should not only use measured ozone concentrations, but should also account for the influence of atmospheric conditions and soil moisture on stomatal conductance and non-stomatal ozone deposition. Following the Level II approach, this study aims to provide a model to estimate the ozone flux for forest ecosystems throughout Switzerland. Project Aims (2002-2005): 1) Conduct an ozone risk assessment with the development of an ozone deposition model for forest ecosystems based on the existing ODEM (Nussbaum et al., in press) model for crops, 2) The screening and validation of ozone sensitive plant species combined with studies investigating the physiological above- and below-ground plant response under controlled conditions within the validation- and learning center Lattecaldo, 3) The assessment of visible ozone injury in the field, i.e. Level II plots throughout Switzerland and Level I plots in Canton Ticino, applying the UN/ECE ICP-Forests guidelines, and 4) The development of a data bank based web page on visible foliar ozone injury for extension activities. Although these objectives are investigating different aspects within the proposed research, they are complementary and intended to strengthen the collaboration with our national and international partners, working in the field of ozone effects on vegetation. Methods: Within the following three years, we intend to continue and foster the collaboration with our international research partners (USA, Spain, Italy, ICP-Forests, UN/ECE) and to use the different ongoing studies within the Lattecaldo OTC research facility, on the long term monitoring Level II plots, as well as on the Level I plots of the Canton Ticino to approach our objectives. In addition to the previous years, we will emphasize the risk assessment of ozone effects on forest plants by developing an ozone deposition model for forest ecosystems based on the existing ODEM for agricultural areas and in close collaboration with the Swiss Federal Research Station for Agroecology and Agriculture FAL, with METEOTEST, and with international collaborators such as Lisa Emberson and Mike Ashmore (University of York). The main challenge will be to combine the different simultaneous studies in a way to take advantage of synergies.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Nussbaum ? Ozon ? Ozonwert ? Synergistische Wirkung ? Vegetation ? Agrarökologie ? Buchhaltung ? Skigebiet ? Bahnhof ? Blei ? Brunnen ? Main ? Schweiz ? USA ? Forstpflanze ? Anfechtung ? Pflanzenart ? Waldökosystem ? Wirkung ? Luftverschmutzung ? Gasförmiger Stoff ? Waldfläche ? AOT40 ? Exposition ? Gasaustausch ? Leitfähigkeit ? Monitoring ? Schnee ? Studie ? Wirkungsforschung ? Witterung ? Deposition ? Bodenfeuchte ? Wirkung ? Messung ? Arbeit ? Biomasse ? Datenbank ? Forschung ? Forschungseinrichtung ? Landwirtschaft ? Ökosystem ? Risiko ? Verkehr ? Landwirtschaftliche Fläche ? Risikobewertung ? Biomasseproduktion ? Dauer ? Wachstum [biologisch] ? stillgelegt ? Aspekt ? Biomasse, Pflanzenproduktion ? Annäherung ? Lernziel ? Methode ? Zins ? Projekt ? austauschen ? Ablagerung ? Einsatz ? bestehend ? Siebung ? Verfrachtung ? Vermehrung ? Funktion ? Immissionsbelastung, Ozon ? Verringerung ? national ? Bepflanzung ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2002-01-01 - 2005-12-31
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