期刊
TREES-STRUCTURE AND FUNCTION
卷 25, 期 6, 页码 1141-1154出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00468-011-0589-z
关键词
Dendroclimatology; Dendrochronology; European larch; Slovenia; Tree ring; Stable isotopes
类别
资金
- EU [017008]
- UK Natural Environment Research Council-UK NERC [NE/B/501504]
- Slovenian research agency
- Climate Change Consortium of Wales
- European Cooperation in Science and Technology-COST Action [FP0903]
- Natural Environment Research Council [NE/B501504/1] Funding Source: researchfish
The southeastern border of the European Alps is not well resourced with high-resolution climate proxies and experiences a distinct climatic regime from the northern and western Alpine zones. Here, we present new high-resolution climatic proxies (AD 1907-2006) from ring widths and stable carbon (delta C-13), non-exchangeable hydrogen (delta H-2) and oxygen (delta O-18) isotope ratios of cellulose extracted from Larix decidua tree rings, growing at the forest limit in the southeastern European Alps (Slovenia). delta C-13, delta H-2 and delta O-18 are strongly (p < 0.001) and positively correlated with each other. June temperature has the strongest control on tree ring width (TRW), while later summer conditions (July-August) influence the stable isotope composition. All four proxies are strongly correlated (r > 0.4; p < 0.001) with summer temperature and also sunshine hours, while precipitation has less impact. A combination of TRW and delta C-13 provides the greatest potential for reconstructing past temperatures (June-August) with significant (p < 0.001) correlations with gridded temperatures extending across a very large part of southern and western Europe west of the Carpathian Mountains. The water isotopes (oxygen and hydrogen) record conditions in the Adriatic and Mediterranean, which are the source area for the air masses that bring precipitation to this region giving strong correlations with temperatures in southern Italy and the western part of the Balkan Peninsula. Combining proxies with different spatial and temporal signals allows the strength and spatial footprint of climate signals to be enhanced. These findings open new perspectives for climate reconstruction in the southeastern European Alps and Western Balkans.
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