Assessing the Sensitivity of European Beech (Fagus sylvatica L.) Stands to Severe. Drought Based on Measurements from Earth Observation Satellites
1st Forestry Workshop: Operational Remote Sensing in Forest Management. Prague, Czech Republic. 2011
Erscheinungsjahr: 2011
Publikationstyp: Diverses (Konferenzbeitrag)
Sprache: Englisch
Inhaltszusammenfassung
Assessing the competitive strength of the European Beech (and other tree species) against the background of regional climate change impact has so far been based on conceptual and empirical modeling approaches, on analyzing growth rates along climatic gradients, and on experimental data collected at representative sites. Findings from these studies not only fail to provide an un- ambiguous picture but to some extent are even contradictory. This study contributes new evi- dence, b...Assessing the competitive strength of the European Beech (and other tree species) against the background of regional climate change impact has so far been based on conceptual and empirical modeling approaches, on analyzing growth rates along climatic gradients, and on experimental data collected at representative sites. Findings from these studies not only fail to provide an un- ambiguous picture but to some extent are even contradictory. This study contributes new evi- dence, based on a spatially explicit assessment of the eco-physiological response of existing beech stands towards severe drought conditions during the exceptional summer of 2003. Based on calibrated multi-temporal satellite measurements (Landsat-5 TM) which cover the complete drought season increasing canopy water stress could be successfully mapped across regional climatic gradients. The retrieved moisture stress indicators were further analyzed with regard to spatially interpolated climate variables (Penman evapotranspiration and global radiation maps. When linked to the official Forest Information System (WÖFIS-RLP) the results proof the existence of substantial differences within the range of sites presently occupied by European beech (Fagus sylvatica L.). It is expected that the results contribute to identify site conditions with elevated risk for growing beech under future climates, and that these findings can be further exploited for designing adapted forest management strategies in Central Europe. » weiterlesen» einklappen
Autoren
Klassifikation
DDC Sachgruppe:
Naturwissenschaften
