Next Article in Journal
Characteristics of Microbial Coalbed Gas during Production; Example from Pennsylvanian Coals in Indiana, USA
Next Article in Special Issue
Changes of High Altitude Glaciers in the Trans-Himalaya of Ladakh over the Past Five Decades (1969–2016)
Previous Article in Journal
Exploitation of Satellite A-DInSAR Time Series for Detection, Characterization and Modelling of Land Subsidence
Article Menu
Issue 2 (June) cover image

Export Article

Open AccessArticle
Geosciences 2017, 7(2), 24; doi:10.3390/geosciences7020024

The Influence of Cryogenic Mass Exchange on the Composition and Stabilization Rate of Soil Organic Matter in Cryosols of the Kolyma Lowland (North Yakutia, Russia)

1
Institute of Physicochemical and Biological Problems of Soil Science, Russian Academy of Sciences, Institutskaya, 2, Moscow 142290, Russia
2
Saint-Petersburg State University, Vasilyevsky Island, line 16, 29, St.-Petersburg 199178, Russia
*
Author to whom correspondence should be addressed.
Academic Editors: Ulrich Kamp and Jesús Martínez Frías
Received: 21 February 2017 / Revised: 31 March 2017 / Accepted: 5 April 2017 / Published: 11 April 2017
(This article belongs to the Special Issue Cryosphere)
View Full-Text   |   Download PDF [3396 KB, uploaded 11 April 2017]   |  

Abstract

Soil organic matter (SOM) was studied in different types of organo-mineral material (from surface horizons and partially isolated materials—cryoturbated or buried horizons) sampled from the surface horizons, the central parts of the Cryosol profiles, and the lower active layer. We found that the humic acids (HAs) of the cryoturbated and buried horizons showed an increased degree of oxidation and an increment of alkylaromatic and protonized aromatic fraction content. In contrast, the HAs of the surface horizons showed increased values of alkylic carbon components. The content of free radicals was essentially higher in the surface layers than in the cryoturbated and buried layers. While the bulk soil organic matter composition (total organic carbon, total nitrogen, and aromatic/aliphatic values) was not essentially different between surface, cryoturbated, and buried horizons, there were essential differences in elemental composition, carbon species, and free radical content. This indicates that the degree of humification in cryoturbated and buried organo-mineral material is higher than in surface horizons and that partial isolation results in relative stabilization of such material in soil profiles. View Full-Text
Keywords: Cryosols; soil organic matter; cryoturbation; solifluction; humic acids; 13C NMR; electron spin resonance spectroscopy Cryosols; soil organic matter; cryoturbation; solifluction; humic acids; 13C NMR; electron spin resonance spectroscopy
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Lupachev, A.; Abakumov, E.; Gubin, S. The Influence of Cryogenic Mass Exchange on the Composition and Stabilization Rate of Soil Organic Matter in Cryosols of the Kolyma Lowland (North Yakutia, Russia). Geosciences 2017, 7, 24.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Geosciences EISSN 2076-3263 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top