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Climate sensitivity of radial growth in Norway spruce (Picea abies (L.) Karst.) under different CO2 concentrations

SYSNO ASEP	0474441
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve SCOPUS
Title	Climate sensitivity of radial growth in Norway spruce (Picea abies (L.) Karst.) under different CO2 concentrations
Author(s)	Aysan Badraghi, Naghimeh (UEK-B)_{SAI, ORCID, RID} Pokorný, Radek (UEK-B)_{RID, ORCID, SAI} Novosadová, Kateřina (UEK-B)_{RID, SAI, ORCID} Pietras, Justyna (UEK-B) Marek, Michal V. (UEK-B)_{RID, ORCID, SAI}
Source Title	Forestry studies - ISSN 1736-8723 Roč. 65, č. 1 (2017), s. 43-56
Number of pages	14 s.
Language	eng - English
Country	EE - Estonia
Keywords	ambient CO2 ; elevated CO2 ; wood formation ; radial increment ; carbon relations ; conifers
Subject RIV	EH - Ecology, Behaviour
OECD category	Environmental sciences (social aspects to be 5.7)
R&D Projects	ED1.1.00/02.0073 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	RVO:67179843 - RVO:67179843
EID SCOPUS	85019019429
Annotation	This investigation examined the effects of two different carbon dioxide concentrations ([CO2]): Ambient (A, 385 μmol (CO2) mol−1) and elevated (E, A+385 μmol (CO2) mol−1)) on the tree-ring width and early to latewood proportion in Norway spruce for seven years (2006–2012). Further, to improve our understanding of the infl uence of climatic variables, we assessed the effects of precipitation and temperature. Our observations showed that spruce trees growing under elevated CO2 (EC) formed less early (p > 0.05) and latewood (p < 0.05) and hence smaller annual increments (p > 0.05) than trees in ambient CO2 (AC). Early to latewood proportion was nearly 73% and 75% in AC and EC, respectively. In both CO2 concentrations, the largest tree-rings and earlywood width was observed during 2009 and 2010, which is coincident with the highest precipitation in May (2010) and the highest air temperature in April (2009). Moreover, to determine the association between the latewood formation and air temperature during the second half of the growing season, and correlation between the earlywood formation and precipitation during the fi rst half of the growing season we run Spearman’s correlation test, the determination coeffi cient values for latewood formation were r = 0.45 (AC) and r = 0.68 (EC), and for earlywood formation were r = 0.53 (AC) and r = 0.42 (EC), although coeffi cient values were not statistically signifi cant (p > 0.05). Also, our study indicated that temperature had stonger infl uence than precipitation in EC, but in AC precipitation had the strongest effect on radial growth.
Workplace	Global Change Research Institute
Contact	Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
Year of Publishing	2018

Number of the records: 1