Перевод названия: Radial migration of siderophilic (Co, Cr) and chalcophilic (Zn) trace elements in the soils of mountain range Ergaki (West Sayan)
Тип публикации: статья из журнала
Год издания: 2011
Аннотация: Рассмотрены генетические типы почв горного массива Ергаки; изучены их морфологические, физические, физико-химические и химические свойства. Выявлена закономерность распределения кобальта, цинка и хрома в почвенных профилях и почвообразующих породах горной территории в условиях смены высотной поясности и геохимических фаций. РассчитПоказать полностьюаны элювиально-аккумулятивные коэффициенты для исследованных типов почв, позволяющие охарактеризовать особенности радиальной миграции Со, Cr и Zn. Построены ряды радиальной миграции, отражающие неоднородность распределения кобальта, хрома и цинка в почвах катен северной и южной экспозиций. Анализ радиальной миграции изучаемых элементов (Со, Cr и Zn) показал, что накопление Zn и Со происходит в серых почвах (катена 1), ржавоземах типичных и горно-луговых почвах (катена 2), соответствующих трансэлювиальным фациям; в остальных исследованных почвах, относящихся к различным геохимическим фациям, происходит рассеяние Со, Cr и Zn. The analysis of interconnection between the distribution of elements in grounds and their genetic peculiarities is an important task of soil elemental composition studying of different types. For a number of grounds these questions are studies quite well, however, the grounds of the Western Sayan, especially the mountain range Ergaki, have not been studied in this relation. The object of the study is topsoil of the mountain range Ergaki. The aim of the study is to establish the intraprofile distribution law of microelements (Co, Cr, Zn) in the Ergaki topsoil. Macro-morphological studies on the territory of the mountain range Ergaki have registered the formation of different types of ground profile. According to the horizon combination, all the studied grounds can be determined as alluvial grey humus gley soils (AY-G-CG~~); grey soils (AY-AEL-BEL-BT-C); typical rusty soils (AY-BFM-C); typical brown soils (О-AY-BM-C), mountain-meadow soils (Ad-A-ВC-C). The research showed that typical rusty and brown soils, as well as mountain-meadow soils, in terms of humus content can be characterized as of high humus, meanwhile alluvial grey humus gley soils ? as of medium humus. In terms of pH quantity of the aqueous extract all the examined types are characterized by acid and weak-acid environment reaction - acidity goes down to the soil-forming rock. An insignificant number of carbonates have been found in all the studied soil types. The grounds of the mountain range Ergaki are characterized by high content of active oxide Fe2O3 that can be explained by mineralogical makeup of the soil-forming rock, which is presented with granites and metamorphic slates. Aluminium active oxide quantity is insignificant and increases gradually to the soil-forming rock. Eluvial-illuvial differentiation of Al2O3 occurs only in the grey soils profiles. Typical rusty and brown soils, mountain-meadow and grey soils are characterized by the weighting of granulometric composition from loose sand (upper organic horizon) to light loam (mineral horizons and the soil-forming rock). Alluvial grey humus gley soils are not differentiated with respect to granulometric composition and are classified as sandy-loam. The profiles of typical rusty (eluvial facies) and brown soils, alluvial grey humus gley soils are faintly differentiated with respect to the content of Co, Cr and Zn, characterized by descending migration and accumulated to the soil-forming rock. The analysis of cobalt, chromium and zinc radial differentiation showed that for the under test soils radial heterogeneity is generally ill-defined. The average zinc storage is registered in the grey and typical rusty soils of trans-eluvial facies catenas of the northern and southern exposure. Cobalt is poorly stored in the mountain-meadow soils profile (trans-eluvial facies). In profiles of the other tested soils forming on the surfaces of eluvial, trans-eluvilal accumulative and superaquatic geochemical facies there is a scattering of Zn, Co и Cr.
Журнал: Вестник Томского государственного университета
Выпуск журнала: № 352
Номера страниц: 225-229
ISSN журнала: 15617793
Место издания: Томск
Издатель: Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Национальный исследовательский Томский государственный университет