TY CONF TI THE SPATIAL VARIATION OF HUMUS CONTENT IN THE SOILS WITH DIFFERENT ANTHROPOGENIC LOAD KW soil fertility KW organic matter KW arable land KW fallow land KW range of variation KW coefficient of variation KW dispersion JO «PROBLEMS OF SOIL FERTILITY IN MODERN AGRICULTURE» AU Mudryh, N.M. PY 2024 PB Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS