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[an error occurred while processing this directive]Properties of ions may explain elemental stoichiometry in late- and early-wood: a case study in Scots pine tree rings
Received date: 2024-03-04
Accepted date: 2024-05-29
Online published: 2024-10-16
Copyright
Vladimir L. Gavrikov , Ruslan A. Sharafutdinov , Alexey I. Fertikov , Eugene A. Vaganov . [J]. 林业研究(英文版), 2024 , 35(1) : 126 . DOI: 10.1007/s11676-024-01779-7
Understanding why elements are distributed in tree xylem in a particular way is a significant challenge in dendrochemistry. This study explored a hypothesis that metal elements in the xylem interact due to differences in physical properties such as ionic radius and ionization potential. Scots pine in an even-aged stand established during the early 1970s in eastern Siberia was the study species. Increment cores were taken from the north and south sides of trees and scanned with an X-ray fluorescent multi scanner. With the help of X-ray scanning, the following elements were analyzed: aluminum (Al), potassium (K), calcium (Ca), titanium (Ti), manganese (Mn), iron (Fe), copper (Cu), strontium (Sr) and zinc (Zn). Scanning data on the elements were split into early-wood and late-wood data for each year of growth. The following ratios were analyzed: Ca/Sr, Fe/Ca, Fe/Sr, Al/Cu, Al/Zn, Ti/Mn, and Mn/K. Among these, ones having a consistent pattern across tree rings, the ratios show a more or less dependable relationship: that an element shows a larger decrease (relative another element) that has a larger ionic radius and lower ionization potential. Hypothetically, this may be due to the advantage of an ion with smaller ionic radius and higher ionization potential under a deficit of accommodation centers in organic molecules. An experiment approach should be applied to clarify the relationships.
Key words: Dendrochemistry; Tree rings; Early-wood; Late-wood; Scots pine
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