Electrophysical approach to assessing some cultivation and fertility elements of light soils in the humid zoneстатья

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Дата последнего поиска статьи во внешних источниках: 7 июля 2016 г.

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[1] Pozdnyakov A. I., Eliseev P. I., Pozdnyakov L. A. Electrophysical approach to assessing some cultivation and fertility elements of light soils in the humid zone // Eurasian Soil Science. — 2015. — Vol. 48, no. 7. — P. 726–734. It has been shown that the specific electrical resistance (SER) is an integral parameter of the physicochemical state of light-textured soils, especially of their solid phase properties. First relationships of SER with physical clay content, cation exchange capacity, and carbon content have been obtained and analyzed for light soils of the humid zone. It has been found that the relationships between the SER and the mentioned properties have exponential shapes y = aexp(-bx), where a and b are parameters; y is the SER value, Ωm; and x is the property value. The similar shapes of the equations allow for use of the SER for the assessment of the main cultivation and fertility elements of light soils in the humid zone (contents of physical clay and organic carbon and cation exchange capacity). On the basis of these relationships, a new approach has been proposed to the selection of SER values for drawing ISO-ohm lines delineating relatively homogeneous zones within the areas (fields) studied by electrophysical methods. Therefore, electrical surveys and ISO-ohm maps can find wide use in soil cover survey. [ DOI ]

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