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Sap flow and growth response of Norway spruce under long-term partial rainfall exclusion at low altitude

Zavadilová, Ina; Szatniewska, Justyna ; Petrík, Peter 1; Mauer, Oldřich; Pokorný, Radek; Stojanović, Marko
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)


Introduction: Under ongoing climate change, more frequent and severe drought periods accompanied by heat waves are expected in the future. Under these conditions, the tree’s survival is conditioned by fast recovery of functions after drought release. Therefore, in the presented study, we evaluated the effect of long-term water reduction in soil on tree water use and growth dynamics of Norway spruce.
Methods: The experiment was conducted in two young Norway spruce plots located on suboptimal sites at a low altitude of 440 m a.s.l. In the first plot (PE), 25% of precipitation throughfall was excluded since 2007, and the second one represented the control treatment with ambient conditions (PC). Tree sap flow, stem radial increment, and tree water deficit were monitored in two consecutive growing seasons: 2015-2016, with contrasting hydro-climatic conditions.
Results: Trees in both treatments showed relatively isohydric behavior reflected in a strong reduction of sap flow under the exceptional drought of 2015. Nevertheless, trees from PE treatment reduced sap flow faster than PC under decreasing soil water potential, exhibiting faster stomatal response. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000156909
Veröffentlicht am 17.03.2023
DOI: 10.3389/fpls.2023.1089706
Zitationen: 8
Web of Science
Zitationen: 7
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 1664-462X
KITopen-ID: 1000156909
HGF-Programm 12.11.24 (POF IV, LK 01) Adaptation of natural landscapes to climate change
Erschienen in Frontiers in Plant Science
Verlag Frontiers Media SA
Band 14
Seiten Art.-Nr.: 1089706
Vorab online veröffentlicht am 14.02.2023
Schlagwörter tree water use, tree water deficit, stem radial variation, precipitation exclusion, recovery, Picea abies, isohydricity, tree ring width
Nachgewiesen in Scopus
Web of Science
Globale Ziele für nachhaltige Entwicklung Ziel 13 – Maßnahmen zum Klimaschutz
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