Veränderungen der Pflanzenphänologie in unterschiedlichen Naturräumen Sachsen-Anhalts unter Berücksichtigung ihrer wesentlichen Einflussfaktoren

Abstract

Scheffler, A.; Frühauf, M.: Changes of plant-phenology in Saxony-Anhalt and their factors of influence.- Hercynia N. F. 44 (2011): 169 – 189.Phenology is often used as an indicator for measuring the impacts of climate change. The phenology ofthe German federal state Saxony-Anhalt has changed in the last fifty years due to rising of air temperatures,caused by climate change. In particular, the growing-season shows a longer duration of up to 23days, mainly caused by an earlier flowering rather than a delayed leaf-fall. Changes of the NAO-indexin the last fifty years show a significant correlation to early-year-phases. Mean temperatures and heightabove sea-level have proven to be the most influential factors of the phenology of Saxony-Anhalt. Theimpact of other climatic factors, such as rainfall or dry seasons, appeared to be rather small. Low temperaturesin the late spring season have a significant impact on the early-year phenological phases andstrongly affect the agriculture, e.g. fruit-plantations.Key words: phenology, Saxony-Anhalt, climate change, growing-season