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Mathematisch-Naturwissenschaftliche Fakultät - Jahrgang 2008



Spatio-temporal patterns of tree-growth response to climatic change


Dagmar Anni Friedrichs




Trees growing under temperate climate conditions are affected by numerous growth influences. Dendroclimatological analyses of tree-ring chronologies in which the long-term growth/climate relations are investigated, help to assess tree-growth response to climatic controls. The aim of this study was to improve the understanding of spatio-temporal patterns of tree-growth response to climatic change in Central European temperate forests to contribute to a profound assessment of i) the suitability of temperate tree growth as proxy for climate reconstructions and ii) the impact of recent climatic change on temperate tree growth.
A new regional-scale tree-ring network consisting of 48 oak (Quercus spp.), 15 beech (Fagus sylvatica), and three pine (Pinus sylvestris) sites was established in Central-West Germany to investigate spatio-temporal growth/climate relation patterns. New insights in complex growth controls were provided by using methodological approaches not commonly used in temperate forest tree-ring analyses. Climate/growth relations were investigated using correlation analysis, redundancy analysis, and moving correlation analysis. Comparing tree growth with temperature, precipitation, vapor pressure, cloud-cover, and drought index, climate influences over the 20th century were determined. more...

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© Universitäts- und Landesbibliothek Bonn | Veröffentlicht: 2008