Yuldashev Gulyam
DSc, Professor of the Fergana State University, 150100, Fergana City, Murabbiylar Street 19, Uzbekistan
Marupov Azizkhon
PhD, Docent of the Fergana State Technical University, 150100, Fergana City, Fergana Street 86, Uzbekistan
Isakov Validjan
DSc, Professor of the Kokand State University, 150101, Kokand city, Turon Street 23, Uzbekistan
Marupova Manzura
PhD, Docent of Fergana Medical Institute of Public Health, 150100, Fergana City, Yangi Turon Street 2A, Uzbekistan
Khaydarov Mavlonjon
PhD, Docent of the Fergana State University, 150100, Fergana City, Murabbiylar Street 19, Uzbekistan
Akbarov Sarvarbek
PhD of the Kokand State University, 150101, Kokand City, Turon Street 23, Uzbekistan
Mamajonov Inomjon
PhD, Docent of the Fergana State University, 150100, Fergana City, Murabbiylar Street 19, Uzbekistan
Muydinov Akhrorbek
PhD Applicant, Namangan State University, 160107, Namangan City, Boburshox Street 161, Uzbekistan
Musurmanov Alisher
PhD, Docent Gulistan State University, 120100, Gulistan City, Syrdarya Region 161, Uzbekistan
Makhsimov Khosimkhon
PhD, Docent of the Fergana State Technical University, 150100, Fergana City, Fergana Street 86, Uzbekistan
High-voltage transmission lines (HVTLs) generate electromagnetic fields and create infrastructure-related environmental gradients that may influence surrounding agricultural soils. This study investigated the spatial variability of soil physicochemical properties and heavy metal concentrations in relation to distance from an HVTL corridor in the Fergana Valley, Uzbekistan. Soil samples were collected along a distance gradient at 0 m, 30 m, and 60 m from the transmission line and analyzed for pH, electrical conductivity, soil moisture, organic matter, total nitrogen, available phosphorus, exchangeable potassium, cation exchange capacity, and selected heavy metals (Pb, Cd, Cu, Zn, and Ni). GIS-based spatial interpolation, descriptive statistics, ANOVA, correlation analysis, and distance-based modeling were applied to evaluate soil responses. The results revealed a clear spatial pattern: soil fertility indicators generally improved with increasing distance from the transmission corridor. Organic matter increased from 0.75% to 1.20%, phosphorus from 10.5 to 15.2 mg/kg, and potassium from 145 to 178 mg/kg between 0 m and 60 m. In contrast, heavy metal concentrations decreased, with Pb declining from 24 to 15 mg/kg. A distance–response model for organic matter showed a strong positive relationship with distance (R² = 0.996, p = 0.041). The findings indicate that proximity to the HVTL corridor is associated with measurable spatial variation in soil condition. The integration of field sampling, statistical analysis, and GIS techniques provides an effective framework for assessing soil variability in infrastructure-affected agricultural landscapes.
