Abstract

The goal was to find out how consistent the elemental distributions in tree rings are. The dataset was received for a long-term afforestation experiment that included even soil conditions and a variety of conifers (Scots pine, Norway spruce, Siberian pine, and Siberian larch) growing in pure stands. The stands are a part of a long-term experiment of the Institute of Forest SB RAS. The experiment is located in the vicinity of Krasnoyarsk city. Relative contents of elements (counts) were received through the scanning facility of Itrax Multiscanner (COX Analytical Systems). Every element was attributed with two variables: concentration of counts and quantity of counts. A cluster analysis was performed in a four-dimensional space of standard deviations and linear slopes of the variables. The elements studied non-randomly distribute over the clusters. Three elements (Ca, Co, and P) display a high consistency of distribution parameters in tree rings as they cluster largely irrespective of species. A few elements (Mn, Pb, Cl, Cr, Ni, Sr, and W) cluster consistently within species. Therefore, for the first time, it was found that the species factor does not affect the distribution of some elements, but significantly affects the distribution of others.

中文翻译：

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年轮中特定于物种和非特定于物种的元素趋势

摘要

目的是找出树木年轮中元素分布的一致性。该数据集用于长期造林实验，包括均匀的土壤条件和在纯林中生长的各种针叶树（苏格兰松树，挪威云杉，西伯利亚松树和西伯利亚落叶松）。这些林分是SB RAS森林研究所长期实验的一部分。该实验位于克拉斯诺亚尔斯克市附近。元素（计数）的相对含量是通过Itrax Multiscanner（COX Analytical Systems）的扫描设备接收的。每个元素都有两个变量：计数的集中度和计数的数量。在标准差和变量的线性斜率的二维空间中进行聚类分析。研究的元素非随机地分布在集群上。三个元素（Ca，Co和P）在树年轮中显示出高度一致的分布参数，因为它们在很大程度上与树种无关。少数元素（Mn，Pb，Cl，Cr，Ni，Sr和W）在种内一致地聚集。因此，首次发现物种因子不影响某些元素的分布，而显着影响其他元素的分布。