Transformation of Trioctahedral Mica in the Upper Mineral Horizon of Podzolic Soil during the Two-Year-Long Field Experiment
- Авторлар: Tolpeshta I.I.1, Sokolova T.A.1, Vorob’eva A.A.1, Izosimova Y.G.1
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Мекемелер:
- Lomonosov Moscow State University
- Шығарылым: Том 51, № 7 (2018)
- Беттер: 843-856
- Бөлім: Mineralogy and Micromorphology of Soils
- URL: https://ogarev-online.ru/1064-2293/article/view/224626
- DOI: https://doi.org/10.1134/S1064229318050125
- ID: 224626
Дәйексөз келтіру
Аннотация
An experiment on transformation of biotite (fraction <1 μm) particles placed into containers with different permeability in the AEL horizon of podzolic soil was performed in order to estimate the contribution of different factors to the transformation of biotite in the modern soil. After two-year-long incubation in the AEL horizon, biotite was transformed into vermiculite, mixed-layer biotite–vermiculite, and pedogenic chlorite. The most intense vermiculitization of the biotite took place under the impact of fungal hyphae and, to a lower degree, fine plant roots and components of the soil solution. The formation of labile structures from biotite was accompanied by thinning of the mica crystallites, the disturbance of the homogeneity of layers, the removal of interlayer K, the removal and oxidation of octahedral Fe, the increase in the sum of exchangeable cations, and the appearance of exchangeable Al. The process of chloritization was definitely diagnosed upon the action of plant roots and fungal hyphae on the biotite. Strong complexing anions released by fungal hyphae partly inhibited chloritization. Chloritization led to a decrease in the cation exchange capacity of vermiculitic structures.
Авторлар туралы
I. Tolpeshta
Lomonosov Moscow State University
Email: sokolt65@mail.ru
Ресей, Leninskie gory, Moscow, 119991
T. Sokolova
Lomonosov Moscow State University
Хат алмасуға жауапты Автор.
Email: sokolt65@mail.ru
Ресей, Leninskie gory, Moscow, 119991
A. Vorob’eva
Lomonosov Moscow State University
Email: sokolt65@mail.ru
Ресей, Leninskie gory, Moscow, 119991
Yu. Izosimova
Lomonosov Moscow State University
Email: sokolt65@mail.ru
Ресей, Leninskie gory, Moscow, 119991
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