TITLE:
State of Organic Matter and Particularities of Physicochemical Properties of Soils in the Endogenous Hydrogen Seepage Zones
AUTHORS:
Natalia Ivanovna Sukhanova, Tatiana Aleksandrovna Zubkova
KEYWORDS:
Soil, Humus, Hydrogen, Aggregate Structure, Mechanical Strength of Aggregates, Matrix Organization of Soil
JOURNAL NAME:
Open Journal of Soil Science,
Vol.8 No.8,
August
23,
2018
ABSTRACT: In the territory of the Voronezh region of Russia in ordinary middle loam
chernozem the elevated concentration of endogenous hydrogen streams up to
0.65% at the depth of 100 - 120 cm was detected. This phenomenon is observed
in the center of depressions. The soils differ in morphological, chemical
and physical properties. The top humus horizon is markedly bleached
comparing to the soil outside the depression: The lightness L readings increase
for 16% - 30%. The soil acidity (up to pH 4.5 - 5.0) and organic carbon
content are elevated comparing to the sample for reference. The proportion
of fulvic acids increases on average thrice as compared with the soils outside
the hydrogen fluids influence zone. Despite the high humus content the mechanical
strength of aggregates decreases 3 - 4 times. Under conditions of hydrogen
fluids, changes occur at the aggregate structural level in the direction
of decreasing their mechanical strength. In the center of the depressions
strength of aggregates is reduced by 2 - 3 times in comparison with the control.
The opposite regularity was observed in the absence of hydrogen flows,
where the strength of aggregates was 3 times higher than in comparison with
the control.