Molecular Structure of Humus Substances in Permafrost Peat Mounds in Forest-Tundra
作者: R. S. VasilevichV. A. BeznosikovE. D. Lodygin
作者单位: 1Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences
刊名: Eurasian Soil Science, 2019, Vol.52 (3), pp.283-295
来源数据库: Springer Nature Journal
DOI: 10.1134/S1064229319010150
关键词: Forest-tundraPermafrost-affected soils of peat moundsHumic and fulvic acidsStructural-functional parametersFree radicals13 С NMREPR spectroscopy
原始语种摘要: Abstract(#br)The molecular structure of humus substances from permafrost-affected peat mounds of the East European forest-tundra has been studied with the use of up to date physicochemical methods ( 13 С NMR, EPR spectroscopy). The structural-functional parameters of humus substances from these soils are specified by the integral action of cryogenic processes in the active layer, natural selection of aromatic structures in the course of humification, and by the species composition and degree of peat decomposition; they reflect the climatic conditions of peat formation in the Holocene. Humic acids of peat bogs are represented by low-condensed molecular structures with the low portion of carbon atoms of aromatic components, which increases down the soil profile, and by with the high content...
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影响因子:0.216 (2012)

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