A dual stable isotope approach unravels common climate signals and species-specific responses to environmental change stored in multi-century tree-ring series from the Tibetan plateau

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Details zur Publikation

Autorinnen und Autoren: Grießinger J, Bräuning A, Helle G, Schleser GH, Hochreuther P, Meier W, Zhu H
Zeitschrift: Geosciences
Jahr der Veröffentlichung: 2019
Band: 9
Heftnummer: 4
ISSN: 2076-3263


Abstract

Tree-rings are recorders of environmental signals and are therefore often used to reconstruct past environmental conditions. In this paper, we present four annually resolved, multi-centennial tree-ring isotope series from the southeastern Tibetan plateau. The investigation site, where juniper and spruce trees jointly occur, is one of the highest known tree-stands in the world. Tree ring cellulose oxygen (δ
18
O) and carbon (δ
13
C) isotopes were analyzed for a common period of 1685–2007 AD to investigate climate–isotope relationships. Therefore, various climate parameters from a local meteorological station and from the CRU 4.02 dataset were used. Tree-ring δ
18
O of both species revealed highly significant sensitivities with a high degree of coherence to hydroclimate variables during the growing season. The obtained δ
18
O–climate relationships can even be retained using a species mean. In contrast, the individual δ13C series indicated a weaker and non-uniform response to the tested variables. Underlying species-specific responses and adaptations to the long-term trend in atmospheric CO
2
bias even after a trend correction identified dominant environmental factors triggering the tree-ring δ
13
C at our site. However, analysis of individual intrinsic water-use efficiency in juniper and spruce trees indicated a species-specific adaptation strategy to climate change.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Bräuning, Achim Prof. Dr.
Lehrstuhl für Geographie (Physische Geographie)
Grießinger, Jussi Dr.
Institut für Geographie
Hochreuther, Philipp
Institut für Geographie
Meier, Wolfgang
Institut für Geographie


Einrichtungen weiterer Autorinnen und Autoren

Forschungszentrum Jülich GmbH (FZJ)
Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum - GFZ
University of Chinese Academy of Sciences


Zitierweisen

APA:
Grießinger, J., Bräuning, A., Helle, G., Schleser, G.H., Hochreuther, P., Meier, W., & Zhu, H. (2019). A dual stable isotope approach unravels common climate signals and species-specific responses to environmental change stored in multi-century tree-ring series from the Tibetan plateau. Geosciences, 9(4). https://dx.doi.org/10.3390/geosciences9040151

MLA:
Grießinger, Jussi, et al. "A dual stable isotope approach unravels common climate signals and species-specific responses to environmental change stored in multi-century tree-ring series from the Tibetan plateau." Geosciences 9.4 (2019).

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Zuletzt aktualisiert 2019-09-05 um 16:17

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