Auswirkungen solarer, klimatischer und atmosphärischer Komponenten auf landwirtschaftliche Erträge ?
- Publication Type
- Journal contribution
- Authors
- Franzaring, J., Henning-Müller, I., Funk, R., Hermann, W., Wulfmeyer, V., Fangmeier, A.
- Year of publication
- 2006
- Published in
- Berichte des Instituts für Landschafts- und Pflanzenökologie der Universität Hohenheim
- Band/Volume
- 14/15/16/
- Page (from - to)
- 67-78
In this paper we present historical time series of national, regional and farm agricultural statistics, nutrient use, solar radiation, climate components and at-mospheric CO2-concentrations, which may be useful in developing crop yield scenarios and adaptation strategies to future climate change. In order to filter yield statistics for intensification of agricultural practice over time, yields of the main crop species were expressed as deviations from the five year moving averages. Relating national yield deviations within the 20th century to anoma-lies of temperature and precipitation from 5 year moving averages showed some dependence of crop yields to monthly climatic statistics. Highest negative correlations were found between crop yields and summer temperatures, indi-cating that hot summers in a future climate will have negative impacts. Pre-cipitation proved to be a less important factor to negatively affect crop yields in Germany and Hohenheim. Yield data for SW-Germany from the hot 1990s confirmed that for every degree temperature increase, yields decreased by 5-10 %. We suggest that historical yield data and local agrostatistical information may be useful in national and regional sensitivity analyses and developing mitigation strategies to climate change.