Soils of pine-birch forests on high Pleistocene terraces in the Selenga delta region

The soils of pine-birch forests on Pleistocene lake-river terraces in the Selenga delta region were studied. These soils are characterized by their weak differentiation into genetic horizons, pale or light brown color, and the weak structure of their mineral horizons. The high base saturation, weakl...

Full description

Saved in:
Bibliographic Details
Published in:Eurasian soil science 2010-06, Vol.43 (6), p.628-634
Main Authors: Gyninova, A. B., Tursina, T. V., Balsanova, L. D., Gyninova, B. D., Inozemtsev, S. A.
Format: Article
Language:English
Subjects:
Clay
Decomposing organic matter
Earth and Environmental Science
Earth Sciences
Forest soils
Forests and forestry
Genesis and Geography of Soils
Geochemistry
Geological time
Geotechnical Engineering & Applied Earth Sciences
Humic acid
Humic acids
Humus
Metamorphism
Pleistocene
Rivers
Soil profiles
Soil sciences
Soils
Terraces
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The soils of pine-birch forests on Pleistocene lake-river terraces in the Selenga delta region were studied. These soils are characterized by their weak differentiation into genetic horizons, pale or light brown color, and the weak structure of their mineral horizons. The high base saturation, weakly acid or close to neutral reaction, and homogeneous bulk chemical composition evidence the absence of the eluvial-illuvial differentiation of the soil profiles. The humus is of the fulvate-humate type. Among the humic acids, the brown acids predominate; the content of black humic acids is slightly lower and that of the nonhydrolyzable residue is elevated. In the mineral horizons, the clay and iron-clay autochthonous formations on the primary mineral grains point to the weakly pronounced process of metamorphism. In the Bm horizon, the formation of crystallized iron compounds in the form of films and fine iron segregations is observed.
ISSN:1064-2293
1556-195X
DOI:10.1134/S1064229310060037