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Geochemical Features of Peat Deposits at Oligotrophic Bogs in the Southern Taiga Subzone of West Siberia
Geochemistry International ( IF 0.8 ) Pub Date : 2021-06-17 , DOI: 10.1134/s0016702921050098
E. E. Veretennikova , I. V. Kuryina , E. A. Dyukarev , E. A. Golovatskaya , S. V. Smirnov

Abstract—

The paper presents original authors’ data on the geochemical aspects and peat deposits and conditions of their accumulation at the three oligotrophic bogs in the south taiga subzone of West Siberia. These data were acquired with regard to a complex of factors impacting the development of peat deposits: the geomorphological setting in the landscape, the lithochemical composition of the underlying rocks, the physicochemical properties of the peat, and the contents of chemical elements and their distribution in the peat profiles. The impact of the geomorphological factor is reflected in the different ratios of peat layer thicknesses in the peat deposits of different type. The composition of the underlying rocks affected the concentration of elements and their distribution within the peat profile. The main element associations in the peat deposits of the bogs are identified using the method of principal components. The distribution of the elements in the peat deposits is shown to be differentially influenced by a number of factors: endogenous supply of elements from the underlying rocks and groundwater (Ca, Fe, Ti, Ni, Cu, Co, Cr, Ba, Cd, and Sr), the activity of redox processes (Mn, Pb, and Fe), redox-independent processes of the dissolution and mobilization of elements by plant roots (Ca, Cu, and Fe), the rate of peat decomposition (Mn, Pb, and the C/N ratio), the water level in the peatlands (C/N ratio), and atmospheric supply of anthropogenic compounds as a result of human activities (Pb).



中文翻译:

西西伯利亚针叶林南部贫营养沼泽泥炭沉积地球化学特征

摘要-

该论文介绍了原始作者关于西西伯利亚南部针叶林亚区三个贫营养沼泽的地球化学方面和泥炭沉积物及其积累条件的数据。这些数据是关于影响泥炭矿床发育的复杂因素获得的:景观中的地貌环境、下伏岩石的岩石化学成分、泥炭的物理化学性质以及化学元素的含量及其在泥炭中的分布。泥炭剖面。地貌因素的影响体现在不同类型泥炭沉积物中泥炭层厚度的不同比例。下伏岩石的组成影响了泥炭剖面中元素的浓度及其分布。沼泽泥炭沉积中的主要元素组合采用主成分法进行识别。泥炭沉积物中元素的分布显示受多种因素的不同影响:来自下伏岩石和地下水的内源元素供应(Ca、Fe、Ti、Ni、Cu、Co、Cr、Ba、Cd、和 Sr)、氧化还原过程(Mn、Pb 和 Fe)的活性、植物根系元素(Ca、Cu 和 Fe)溶解和移动的不依赖氧化还原的过程、泥炭分解速率(Mn、Pb和 C/N 比)、泥炭地中的水位(C/N 比)以及人类活动导致的人为化合物的大气供应(Pb)。

更新日期:2021-06-18
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