Open AccessCATION EXCHANGE CAPACITY OF THE HUMUS PART OF THE WEST SIBERIAN TRANSECT SOILS
Author(s) -
Б. М. Кленов,
M. V. Yakutin
Publication year - 2021
Publication title -
interèkspo geo-sibirʹ
Language(s) - English
Resource type - Journals
ISSN - 2618-981X
DOI - 10.33764/2618-981x-2021-4-2-80-87
Subject(s) - humus , soil water , transect , podzol , cation exchange capacity , environmental chemistry , organic matter , soil science , chemistry , environmental science , geology , organic chemistry , oceanography
The article analyzes the change in the indicator of the cation exchange capacity (CEC) in the humus of the latitudinal series of soils in Western Siberia. It is shown that not all humus substances are able to perform the function of cation exchange and participate in the formation of the organic part of the soil EC. It is shown that the organic matter in the latitudinal range of soils in Western Siberia is distributed in accordance with the known geographical pattern of the distribution of the total humus stock and the main characteristics of this stock. An unconventional evaluation method for determining the EC is proposed using analytical data on the content of acidic functional groups in humic acids and the composition of humic substances, which allows us to separately assess the contribution of humic and fulvic acids in the composition of the EC of the soil.