Properties of ions may explain elemental stoichiometry in late-and early-wood:a case study in Scots pine tree rings  

作　　者：Vladimir L.Gavrikov Ruslan A.Sharafutdinov Alexey I.Fertikov Eugene A.Vaganov 

机构地区：[1]Siberian Federal University,Svobodny 79,Krasnoyarsk,Russia,660041 [2]Institute for Forest,SB RAS,Akademgorodok 50/28,Krasnoyarsk,Russia,660036

出　　处：《Journal of Forestry Research》2025年第1期493-504,共12页林业研究(英文版)

基　　金：supported by the Russian Science Foundation(grant No.:23-44-00067).

摘　　要：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.

关 键 词：Dendrochemistry Tree rings Early-wood Late-wood Scots pine 

分 类 号：S718.4[农业科学—林学]