Библиографическое описание:ИЗМЕНЧИВОСТЬ ЭЛЕМЕНТНОГО СОСТАВА ГОДИЧНЫХ КОЛЕЦ ХВОЙНЫХ ПОРОД = Variability in elemental composition of conifer tree rings : научное издание / В. Л. Гавриков [и др.]. - Текст : непосредственный // Известия высших учебных заведений. Лесной журнал = LESNOY ZHURNAL-FORESTRY JOURNAL. - 2021. - № 6. - С. 24-37. - Cited Reference Count: 26. - ISSN 0536-1036, DOI 10.37482/0536-1036-2021-6-24-37.
Аннотация:Распределение химических элементов в годичных кольцах деревьев несет важную информацию о многих биогеохимических процессах. Для надежной интерпретации этой информации необходимо обладать сведениями о степени вариации содержания химических элементов как на уровне всего вида, так и на уровне отдельных деревьев. Цель исследования - установить, какие химические элементы имеют устойчивый характер распределения в стволах ряда хвойных пород: ели сибирской (Picea obovata Ledeb.), сосны обыкновенной (<i>Pinus sylvestris</i> L.), лиственницы сибирской (<i>Larix sibirica </i>Ledeb.) и сосны сибирской (<i>Pinus sibirica</i> Du Tour). Данные для анализа получены на основе многолетнего опыта лесовыращивания. Экспериментальная площадка заложена в 1971-1972 гг. в окрестностях г. Красноярска институтом леса СО РАН . Перед высадкой саженцев почвенный фон механически выровнен, и таким образом для всех посадок созданы достаточно равные условия роста. Из трех нормально развивающихся деревьев каждой породы взяты керны диаметром 12 мм, проведен их анализ современными рентгенофлуоресцентными методами. Относительные величины содержания элементов (отсчеты) получены на мультисканере Itrax Multiscanner (COX Analytical Systems). Содержание элементов в годичных кольцах характеризовалось концентрацией и запасом элементов. Концентрация рассчитывалась как количество отсчетов на 1 мм<sup>2</sup> площади кольца; запас - как количество отсчетов на всей площади кольца. Каждая из этих переменных описывалась параметрами линейного наклона в ряду календарных лет и стандартного отклонения. Кластерный анализ проводился в 4-мерном пространстве полученных параметров. Это позволило установить, группируются ли ряды распределения элементов из различных деревьев и различных пород. Три элемента (Ca, Co, P) демонстрируют высокую устойчивость параметров распределения независимо от породы дерева. Ряд других элементов (Mn, Pb, Cl, Cr, Ni, Sr, W) устойчиво группируется в зависимости от породы. Результаты исследования позволяют сконцентрироваться на изучении элементов, устойчиво распределяющихся в стволах хвойных.
Distribution of chemical elements in tree rings bears important information on various biogeochemical processes. In order to achieve a reliable interpretation of the information, it is necessary to know the degree of variation in the content of chemical elements both at the level of the entire species and at the level of individual trees. The research aims to determine which chemical elements have a stable distribution in the trunks of a number of conifers: Siberian spruce ( Picea obovata Ledeb.), Scots pine ( Pinus sylvestris L.), Siberian larch ( Larix sibirica Ledeb.), and Siberian pine ( Pinus sibirica Du Tour). The data for the analysis were obtained on the basis of the long-term experiment in forest growing. The experimental site was laid out in 1971-1972 in the vicinity of Krasnoyarsk by the staff of the Sukachev Institute of Forest of the Siberian Branch of the Russian Academy of Sciences. Before planting the seedlings, the soil ground was mechanically levelled, and thus, sufficiently equal growth conditions were created for all plantings. Cores with a diameter of 12 mm were sampled from three normally developing trees of each species and analyzed using modern X-ray fluorescence methods. Content relative values of elements (counts) were obtained with the Itrax Multiscanner (COX Analytical Systems). The content of elements in the tree rings was characterized by the concentration and reserve of elements. Concentration was calculated as the number of counts per 1 mm2 of the ring area; reserve was calculated as the number of counts over the entire ring area. Each of these variables was defined by the parameters of linear slope in the calendar year series and the standard deviation. The cluster analysis was performed in the 4-dimensional space of the obtained parameters. This allowed determining whether the series of element distributions from different trees and species are grouped. Three elements (Ca, Co, and P) license show high stability of distribution parameters in tree rings with no regard to tree species. A number of other elements (Mn, Pb, Cl, Cr, Ni, Sr, and W) are stably grouped depending on the species. The results of the research enable to focus on the study of the elements stably distributed in the conifer trunks.
Distribution of chemical elements in tree rings bears important information on various biogeochemical processes. In order to achieve a reliable interpretation of the information, it is necessary to know the degree of variation in the content of chemical elements both at the level of the entire species and at the level of individual trees. The research aims to determine which chemical elements have a stable distribution in the trunks of a number of conifers: Siberian spruce (Picea obovata Ledeb.), Scots pine (Pinus sylvestris L.), Siberian larch (Larix sibirica Ledeb.), and Siberian pine (Pinus sibirica Du Tour). The data for the analysis were obtained on the basis of the long-term experiment in forest growing. The experimental site was laid out in 1971-1972 in the vicinity of Krasnoyarsk by the staff of the Sukachev Institute of Forest of the Siberian Branch of the Russian Academy of Sciences. Before planting the seedlings, the soil ground was mechanically levelled, and thus, sufficiently equal growth conditions were created for all plantings. Cores with a diameter of 12 mm were sampled from three normally developing trees of each species and analyzed using modern X-ray fluorescence methods. Content relative values of elements (counts) were obtained with the Itrax Multiscanner (COX Analytical Systems). The content of elements in the tree rings was characterized by the concentration and reserve of elements. Concentration was calculated as the number of counts per 1 mm(2) of the ring area; reserve was calculated as the number of counts over the entire ring area. Each of these variables was defined by the parameters of linear slope in the calendar year series and the standard deviation. The cluster analysis was performed in the 4-dimensional space of the obtained parameters. This allowed determining whether the series of element distributions from different trees and species are grouped. Three elements (Ca, Co, and P) show high stability of distribution parameters in tree rings with no regard to tree species. A number of other elements (Mn, Pb, Cl, Cr, Ni, Sr, and W) are stably grouped depending on the species. The results of the research enable to focus on the study of the elements stably distributed in the conifer trunks.
