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The effect of thinning intensity on sap flow and growth of Norway spruce

Zavadilová, Ina; Szatniewska, Justyna; Stojanović, Marko; Fleischer, Peter; Vágner, Lukáš; Pavelka, Marian; Petrík, Peter 1
1 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)

Abstract:

Forest thinning can be used as an adaptive measure to improve the growth and resistance of Norway spruce forests affected by climate change. The impact of different thinning intensities on sap flow, growth, and tree water deficit of 40-year-old Norway spruce was tested. High thinning intensity (–61% of basal area) resulted in increased tree-level sap flow compared to the control (+27%), but it caused a decrease in the stand-level transpiration (–34%) due to reduced leaf area index. Low-intensity thinning (–28% basal area), high-intensity thinning, and control showed similar responses of sap flow to vapour pressure deficit and global radiation, suggesting unchanged isohydric behaviour. Both low- and high-intensity treatments displayed greater radial growth than the control. There were no differences in tree water deficit between the treatments. The low-intensity treatment can be considered the best water utilisation treatment with increased growth and unchanged transpiration at the tree level. The high-intensity treatment had similar radial growth as the low-intensity but lower stand-level transpiration, implying improved soil water availability. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000160651
Veröffentlicht am 17.07.2023
Originalveröffentlichung
DOI: 10.17221/17/2023-JFS
Scopus
Zitationen: 3
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 29.05.2023
Sprache Englisch
Identifikator ISSN: 1212-4834, 1805-935X
KITopen-ID: 1000160651
HGF-Programm 12.11.24 (POF IV, LK 01) Adaptation of natural landscapes to climate change
Erschienen in Journal of Forest Science
Verlag Czech Academy of Agricultural Sciences
Band 69
Heft 5
Seiten 205 – 216
Schlagwörter increment, Picea abies, silviculture, transpiration, tree water deficit
Nachgewiesen in Scopus
Dimensions
Globale Ziele für nachhaltige Entwicklung Ziel 12 – Nachhaltiger Konsum und ProduktionZiel 13 – Maßnahmen zum KlimaschutzZiel 15 – Leben an Land
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