Akademik Veri Yönetim Sistemi
EARTH SYSTEMS AND ENVIRONMENT, cilt.5, sa.3, ss.739-750, 2021 (ESCI)
Among the greatest challenges facing Ukraine as well as other countries with significant agrarian production are sustainable land management, precision farming, soil erosion, and fertility identification. Soil magnetic susceptibility (MS, chi), as well as other magnetic mineralogical parameters, can be a useful indicator of cropland degradation, soil erosion, and pollution assessment. The objective of this work is to study soil magnetic properties in an agricultural land area located in Pechenigy (Kharkiv region, Ukraine). To study the soil magnetic properties distribution, we performed three soil sections (cuts) in different genetic soil horizons. The sections were developed according to the landscape position. The samples were collected from each horizon, and a total of 39 soil samples were taken for laboratory analysis. The laboratory studies included the measurements and calculation of the MS, frequency dependence of the MS (chi fd), anhysteretic MS (chi ARM), isothermal remanent magnetization (IRM), hysteresis, and thermomagnetic parameters. The results showed that MS differs depending on the depth (genetic horizon) and landscape position (section). The average values for topsoil were 70-80 x 10(-8) m(3)/kg. We observed a decrease in MS for Sections 1 and 3 of the deeper soil layer. In the C horizon, the MS was 3-4 times lower than in the A horizon. The MS values for Section 2 were substantially different from those for Sections 1 and 3. In Section 2, we registered the maximum at a depth of 60-90 cm in the B horizon (80-90 x 10(-8) m(3)/kg). Results of magnetic mineralogical analyses suggested that the origin of magnetite, maghemite, and paramagnetic minerals was mostly associated with the pedogenic process. The magnetic minerals were predominantly in superparamagnetic (SP) and single-domain (SD) state with a grain size of less than 0.2 microns.