THE SPATIAL VARIABILITY OF PHYSICO-CHEMICAL PROPERTIES AS A STRESS FACTOR IN A NON-REGULARLY OVERFLOWED AREA

Research of spatial variability of soil properties was realized in years 2006-2008. Eight soil profiles were observed. Soil samples were taken from depths 0.0-0.3 m and 0.3-0.6 m in spring time. Sampling sites were represented with arable land and perennial grass stands (pastures, meadows), wetty and dry soil. Important spatial variability of soil properties at no-regularly overflowing area was confirmed with large range of soil parameters. Specific gravity was in range 2485-2760 kg m(-3), bulk density 1011-1826 kg m(-3), porosity 31.81-61.36 %, maximum capillary capacity 29.25-55.03 %, soil reaction (pH/KCl) 3.81-5.75, humus 0.75-7.11 %, humic acids 0.06-0.68 %, fluvic acids 0.27-1.23 %, clay particles 22.34-86.16 %. By content of clay particles in sampling profiles soil of this area is sandy-loamy till clay.