Počet záznamů: 1
Application of Raman spectroscopy to analyse lignin/cellulose ratio in Norway spruce tree rings
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SYSNO ASEP 0485067 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Application of Raman spectroscopy to analyse lignin/cellulose ratio in Norway spruce tree rings Tvůrce(i) Vítek, Petr (UEK-B) RID, SAI
Klem, Karel (UEK-B) RID, ORCID, SAI
Urban, Otmar (UEK-B) RID, ORCID, SAIZdroj.dok. Beskydy - ISSN 1803-2451
Roč. 20, 1-2 (2017), s. 41-48Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova dendrochronology ; vibrational spectroscopy ; lignification ; Norway spruce ; abiotic stress Vědní obor RIV EF - Botanika Obor OECD Plant sciences, botany CEP LO1415 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UEK-B - RVO:86652079 DOI 10.11118/beskyd201710010009 Anotace Tree cores of Picea abies trees (>75 years old) from two different elevations (400 and
1100 m, a. s.l.) in the Jeseníky Mountains were examined. Raman spectroscopy was
used to analyse lignin/cellulose ratio in the latewood of individual tree rings from the
last 35 years. The ratio was calculated based on the Raman intensity of the lignin band
at ~1600 cm–1 assigned to phenyl groups and cellulose band at ~1096 cm–1 based on
a vibration of glycosidic bonds. The results show a clear difference in lignin/cellulose
ratios in trees from high and low elevations, while similar trends in lignin/cellulose
ratios were found in tree cores originating from the same tree but different directions.
Higher lignin/cellulose ratios were found at high elevation as compared to low elevation.
The wood of spruces grown at high elevation also exhibited greater variability of lignin/
cellulose ratios among individual tree rings as compared to trees from low elevation.
A negative correlation between lignin/cellulose ratio and mean annual temperature
was revealed. A weak positive correlation between lignin/cellulose ratio and total
annual precipitation was also found. Redundancy analysis (RDA) showed a pronounced
influence of precipitation in June. The results show great potential for Raman
spectroscopy in tree-ring analysis.Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2019
Počet záznamů: 1