Soils on the southern border of the cryolithozone of European part of Russia (the Subpolar Urals) and their soil organic matter fractions and rheological behavior

•Free and occluded physical fractions play important role in the composition of organic matter and soil stability.•The rheological parameters largely depend on organic carbon content.•The organic matter composition affects the physical stability of soils. Soil organic matter (SOM) plays an important...

Full description

Saved in:
Bibliographic Details
Published in:Geoderma 2020-03, Vol.361, p.114006, Article 114006
Main Authors: Startsev, V.V., Khaydapova, D.D., Degteva, S.V., Dymov, A.A.
Format: Article
Language:English
Subjects:
Mountain soils
Permafrost-affected soils
Rheology
Soil organic matter
The Subpolar Urals
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Free and occluded physical fractions play important role in the composition of organic matter and soil stability.•The rheological parameters largely depend on organic carbon content.•The organic matter composition affects the physical stability of soils. Soil organic matter (SOM) plays an important role in the functioning of mountain ecosystems. This article contains the results of a study on SOM of high-latitude soils of the Subpolar Urals and its influence on the deformation behavior of soils. The first approach of this study was to define the soils of the Subpolar region to identify the main soil types and their morphological and chemical properties. We investigated soil types of mountain-forest, subalpine and alpine tundra vegetation zones, as well as soil types with permafrost. We investigated SOM using the method of physical fractionation, which isolates three fractions of SOM: free particulate organic matter (fPOM
ISSN:0016-7061
1872-6259
DOI:10.1016/j.geoderma.2019.114006