Abstract
Humic acids from polar soils—cryozems (Cryosols), gleyezems (Gleysols), and peat soils (Histosols)—
have been studied by electron paramagnetic resonance spectroscopy. First information was acquired
on the content of free radicals in humic acids from polar soils for the northern regions of Western Siberia
(Gydan Peninsula, Belyi Island). It was found that polar soils are characterized by higher contents of free radicals
than other zonal soils. This is related to the lower degree of humification of organic matter and the
enhanced hydromorphism under continuous permafrost conditions. The low degree of organic matter humification
in the cryolithozone was confirmed by the increased content of free radicals as determined by electron
paramagnetic resonance, which indicates a low biothermodynamic stability of organic matter.
Original language | English |
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Pages (from-to) | 35-39 |
Number of pages | 5 |
Journal | Eurasian Soil Science |
Volume | 50 |
Issue number | 1 |
DOIs | |
State | Published - 24 Feb 2017 |
Keywords
- Gydan soils
- cryozems
- Cryosols
- electron paramagnetic resonance
- humic acids
- humification
- free radicals