Ozone measurement and analysis in the Intercantonal Forest Observation Program

In order to quantify effects of ozone on Swiss forest ozone flux calculations are needed. Currently 5 stations are operated to measure the ozone load on forests. These data form the basis for ozone flux calculations. The ozone flux calculation is carried out with the DO3SE model (Büker et al. 2012). This can then be used for epidemiological evaluations for the Swiss forest (Thomas et al. 2005, Braun et al. 2014, Braun et al. 2017, Braun et al. 2020, Braun et al. 2021, Braun et al. 2022).

• Cantonal offices for forestry of the cantons AG, BS, BL,GR, SO, TG, ZH
• Cantonal offices for environement of the cantons LU, NW, OW, SZ, UR und ZG
• In collaboration with the Federal Office for Environment (FOEN)

• https://www.iap.ch/publikationen.html
• Braun, S., Hopf, S.-E., de Witte, L. & Tresch, S. (2021). How is our forest? 38 years of forest observation. Witterswil, Switzerland. https://doi.org/10.5281/zenodo.5724756
• Braun, S., Rihm, B. & Schindler, C. (2022). Epidemiological Estimate of Growth Reduction by Ozone in Fagus sylvatica L. and Picea abies Karst.: Sensitivity Analysis and Comparison with Experimental Results. Plants, 11(6), 777. https://doi.org/10.3390/plants11060777
• Braun, S., Schindler, C. & Rihm, B. (2014). Growth losses in Swiss forests caused by ozone: Epidemiological data analysis of stem increment of Fagus sylvatica L. and Picea abies Karst. Environmental Pollution, 192, 129–138. https://doi.org/10.1016/j.envpol.2014.05.016
• Braun, S., Schindler, C. & Rihm, B. (2017). Growth trends of beech and Norway spruce in Switzerland: The role of nitrogen deposition, ozone, mineral nutrition and climate. Science of The Total Environment, 599–600, 637–646. https://doi.org/10.1016/j.scitotenv.2017.04.230
• Braun, S., Schindler, C. & Rihm, B. (2020). Foliar Nutrient Concentrations of European Beech in Switzerland: Relations With Nitrogen Deposition, Ozone, Climate and Soil Chemistry. Frontiers in Forests and Global Change, 3(March), 1–15. https://doi.org/10.3389/ffgc.2020.00033
• Büker, P., Morissey, T., Briolat, A., Falk, R., Simpson, D., Tuovinen, J.-P. et al. (2012). DO3SE modelling of soil moisture to determine ozone flux to European forest trees. Atmospheric Chemistry and Physics.
• Thomas, V. F. D., Braun, S. & Flückiger, W. (2005). Effects of simultaneous ozone exposure and nitrogen loads on carbohydrate concentrations, biomass and growth of young spruce trees (Picea abies). Environmental Pollution.