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High resilience of carbon transport in long-term drought-stressed mature Norway spruce trees within 2 weeks after drought release

Hikino, Kyohsuke; Danzberger, Jasmin; Riedel, Vincent P.; Rehschuh, Romy; Ruehr, Nadine K. ORCID iD icon; Hesse, Benjamin D.; Lehmann, Marco M.; Buegger, Franz; Weikl, Fabian; Pritsch, Karin; Grams, Thorsten E. E.

Abstract:

Under ongoing global climate change, drought periods are predicted to increase in frequency and intensity in the future. Under these circumstances, it is crucial for tree's survival to recover their restricted functionalities quickly after drought release. To elucidate the recovery of carbon (C) transport rates in c. 70-year-old Norway spruce (Picea abies [L.] KARST.) after 5 years of recurrent summer droughts, we conducted a continuous whole-tree $^{13}$C labeling experiment in parallel with watering. We determined the arrival time of current photoassimilates in major C sinks by tracing the $^{13}$C label in stem and soil CO$_{2}$ efflux, and tips of living fine roots. In the first week after watering, aboveground C transport rates (CTR) from crown to trunk base were still 50% lower in previously drought-stressed trees (0.16 ± 0.01 m h$^{-1}$) compared to controls (0.30 ± 0.06 m h$^{-1}$). Conversely, CTR below ground, that is, from the trunk base to soil CO$_{2}$ efflux were already similar between treatments (c. 0.03 m h$^{-1}$). Two weeks after watering, aboveground C transport of previously drought-stressed trees recovered to the level of the controls. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000141896
Veröffentlicht am 16.01.2022
Originalveröffentlichung
DOI: 10.1111/gcb.16051
Scopus
Zitationen: 7
Web of Science
Zitationen: 7
Dimensions
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 03.2022
Sprache Englisch
Identifikator ISSN: 1354-1013, 1365-2486
KITopen-ID: 1000141896
HGF-Programm 12.11.24 (POF IV, LK 01) Adaptation of natural landscapes to climate change
Erschienen in Global Change Biology
Verlag John Wiley and Sons
Band 28
Heft 6
Seiten 2095-2110
Vorab online veröffentlicht am 20.12.2021
Nachgewiesen in Dimensions
Scopus
Web of Science
Globale Ziele für nachhaltige Entwicklung Ziel 13 – Maßnahmen zum Klimaschutz
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