Агрегатная структура почв как индикатор формирования западин в разломных зонах Европейской России

Зубкова, Т.А.; Суханова, Н.И.

Авторы: Зубкова Т.А., Суханова Н.И.
Сборник: Ландшафтная география в XXI веке. Материалы Международной научной ландшафтно-экологической конференции "Третьи ландшафтные чтения, посвященные 100-летию рождения Г.Е.Гришанкова"
Год издания: 2018
Место издания: Симферополь
Первая страница: 400
Последняя страница: 405
Аннотация: In the central regions of European Russia, adjacent to deep faults of the earth's crust, an abnormally high content of hydrogen in the soil was found. The concentration of hydrogen can reach 1.0-2.5%. It is known that climatic and geophysical changes occur in tectonic dislocation zones. Much less data on the influence of hydrogen flows on the biosphere and humans. About the state of soils in such zones, almost nothing is known. In the presented work physical and chemical properties of soil aggregates 3-5 mm in areas with high fluxes of hydrogen fluids (Voronezh region) and low ones (Rostov region) are considered. The object of investigation is original chernozems. The state of aggregates was evaluated by their mechanical strength. This characteristic reflects in itself both the physical properties of the soil (granulometric composition, specific surface area, porosity), and the chemical properties of the surface. The advantage of this method of aggregates research is that the determination is made with natural air-dry aggregates, without a preliminary failure and with high repetition. The molecular hydrogen flow was measured by a portable gas analyzer of hydrogen VG-3B (made in Russia). The strength of the aggregates was determined by the method of direct mechanical crushing on a device MP-2C (made in Russia) in 35-fold repeatability and expressed in newtons (N). The statistical processing of the results was carried out in the program "Statistica-6.0". The results showed that under conditions of a high hydrogen fluids flow in soils, changes occur at the aggregate structural level in the direction of reducing the aggregate mechanical strength by 2-3 times in comparison with the control areas. In the absence of H2, an inverse relationship was observed: the aggregates in the center part of the depressions were stronger by three times. The mechanical strength of aggregates increases in proportion to the humus content in the soil. However, under conditions of increased H2 flux, the aggregate strength decreased with increasing humus content, which may be the result of the endogenous hydrogen influence.
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Агрегатная структура почв как индикатор формирования западин в разломных зонах Европейской Россиистатья

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