Search Results - M. P. Lebedeva

The calcareous inclusions in soils of Pym-Va-Shor (Nenets Autonomous District) are interesting due to the possibility of observation of ancient and present impact of thermal waters on the soil cover. The water mineralization 1.48 g/l, the content of hydrocarbonate-ion 0.15-0.16 g/l, pH 8.0-8.5, SAR...

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New aspects in the comparison of macro- and micromorphological, chemical and physicochemical properties of soils studied in the eastern and western deserts of Central Asia, the Gobi and Turan deserts, respectively, are presented in the article. Common and specific properties of these deserts were re...

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A comparative analysis of microspecificities of agrogenic soils of solonetzic com-plexes of inclined plain was conducted to create trends of elementary soil-forming processes under different types of anthropogenic changes (for plowing and irrigation). The task is solved with the help of Olympus BХ51...

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As a result of experimental studies carried out for the first time with the aim at determining the impact of black (Haloxylon aphyllum) and white Saxaul (Haloxylon persicum) on the mineralogical composition of fine-dispersed fractions in sandy desert soils, it seemed reasonable to conclude that the...

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A comparative micromorphological analysis of soil fabrics within two- and three-component semidesert solonetz complexes formed within closed-drainage plains with different types of microtopography in the northern of the Caspian Lowland has been conducted. Micromorphological features of soils of most...

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The rill erosion affects significantly on the processes of arable soils degradation. Therefore the aim of the work was to continue the development of hydraulic and statistical methods for assessing the transportation of soil material by shallow streams. For this purposes, we conducted the verificati...

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This paper discuss the changes in understanding of the central image of Vertisols and leading processes of their formation. The early concept described Vertisols as black or dark clayey soils with homogenous undifferentiated profile resulted basically of pedoturbation. The further studies discovered...

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A comparative analysis of the mineralogical composition of the clay fraction (< 1 μm) of chestnut soil and solonetz has been performed in the article. Soils were studied in the oldest part of the Caspian lowland in north-west where the microrelief is not quite apparent (microdepressions no mo...

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Under study was the microbiome structure in virgin light-colored hydromorphized solonetz soil by using molecular-genetic and cultural methods. It was shown that the diversity of the microbial community is constantly decreasing down the soil profile being sharply declined in the solonetz horizon. Aga...

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The specificity of stationary is in the possibilities of direct investigation of micro- or particular (according to A. A. Rode) processes on relatively small homogenous (stationary) soil area which stayed unchanged for 10 years and more. The results of comparative analysis of macro-and micromorpholo...

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Mineralogical composition of different texture fractions of Solonetz (Calcic Gypsic Endosalic Solonetz (Columnic Cutanic differentic) was studied. Inves-tigated object was located on the Borsi key plot in the northern part of the Caspian lowland (absolute height of the territory about 48 m) and deve...

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The morphologic, physical, mineralogic and chemical specificities of solonetzic process occurrence are studied in the arable layer from the non-meliorated solonetz for 50-year period of its post-agrogenic evolution. The mineralogic analysis of the separate grain fractions (10 mm) from microhorizons...

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The analysis of publications has shown that the period of intensive development of several spheres in micromorphology in the second half of the XX century was followed by a period when micromorphology became more required in applied research. Addressing micromorphology for solving pedogenetic and ta...

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Being grown on soils with different salinity degree, Tamarix ramosissima as the major representative of crinohalophytes reveals its ability to accumulate and removal the soluble salts. This is evidenced by a conjugated analysis to determine the chemical composition of soluble salts in ground waters,...

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The structure of the soil cover at the territory of the clayey semidesert of the Northern Caspian Sea is represented by triparted soil complex and peculiar soils like solod. Solods are formed in relief elements that are constant for this territory – mesodepressions, which are referred to limans. Two...

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The structure of the soil cover of the Northern Caspian region includes the interdepression solonetz complex, soils of depressions and estuaries. Permanent elements of the microrelief of the estuary bottom are closed rounded microdepressions up to 9 m in diameter. The soil combination of microdepres...

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Due to the complexity and heterogeneity of soil organic matter, a very wide range of methods and approaches is used to study it. This generates an excessive number of terms, definitions and indices, which makes it difficult to understand and interpret the data of different authors. The paper provide...

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The study is focused on the pattern of soil salinity at the young loamy coastal plains of the Caspian Sea in Russia and Iran which were released from water less than 300 years ago. At two key sites of 45×30 m (Russia) and 25×20 m (Iran), the soil sampling with 1 to 5 m grid was performed to the dept...

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