Abstract

Geochemical features of permafrost-affected (Folic Protic Leptic Cryosols, Histic Protic Leptic Cryosols) and Al-Fe-humus soils (Folic Leptic Entic Podzols, Histic Leptic Entic Podzols) have been studied. These soils are widespread in taiga forests of Khentei, Eastern Sayan, and Khangai mountains. Data on the microelemental composition of parent rocks are given. The dispersion coefficients of most of the studied microelements in parent rocks relative to the lithosphere exceed 1.0, which indicates the predominance of processes of material removal. Differences in the concentrations of microelements in soils largely depend on the texture of parent rocks. Data on the morphology, physicochemical and chemical properties of soils and on the distribution of microelements in the soil profiles are discussed. The studied soils differ both in the absolute contents of microelements involved in the biological cycle and the intensity of their biogenic migration. The intensive biogenic migration of elements results in their accumulation in organic and raw-humus soil horizons and in the accumulative patterns of element distribution in the soils of the altitudinal zones of forest vegetation. In contrast to Cryosols, the organic and raw-humus horizons of Entic Podzols are characterized by a less intensive accumulation of microelements. In the Al–Fe-humus (spodic) horizon of Podzols, the concentrations of Pb, Cr, Mo, and B are above the clarke level. Spodic horizons of the studied soils act as chemosorption geochemical barrier for some biophilous elements and elements of the iron group.

中文翻译：

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蒙古北部山区针叶林的低温和Al-Fe-腐殖质土壤的地球化学特征

摘要

研究了受多年冻土影响的土壤化学特征（叶酸质子传递的低温冷冻质液，历史质子质感的冷冻低温质液）和铝铁腐殖质土壤（叶酸质子的免疫立足体，历史质子性的腐殖质立足体）的地球化学特征。这些土壤广泛分布在Khentei，Sayan东部和Khangai山脉的针叶林中。给出了母岩中微量元素组成的数据。大多数研究的微量元素在母岩中相对于岩石圈的弥散系数超过1.0，这表明材料去除过程占主导地位。土壤中微量元素浓度的差异很大程度上取决于母岩的质地。讨论了有关土壤形态，理化和化学性质以及土壤剖面中微量元素分布的数据。所研究的土壤在涉及生物循环的微量元素的绝对含量及其生物迁移的强度上都不同。元素的密集生物成因迁移导致它们在有机和原始腐殖质土壤层中积累，并导致森林植被垂直带土壤中元素分布的累积格局。与低温溶胶相反，恩梯克足族的有机物和原始腐殖质地层的特征是微量元素的集聚程度较低。在Podzols的Al-Fe-腐殖质（偶发性）层位中，Pb，Cr，Mo和B的浓度高于克拉克水平。被研究土壤的偶发层位对某些生物元素和铁族元素起着化学吸附地球化学屏障的作用。