Nature of Inner Asia
Bibliographic description:
, COMPOSITION OF STABLE CARBON ISOTOPES 13С/12С IN SOILS OF THE SELENGA HIGHLANDS // Nature of Inner Asia. - 2022. №4(22). . - С. 38-44.
Title:
COMPOSITION OF STABLE CARBON ISOTOPES 13С/12С IN SOILS OF THE SELENGA HIGHLANDS
Financing:
Работа выполнена за счет средств государственного задания (№ 121030100229-1).
Codes:
Annotation:
The article presents the results of studying the composition of stable carbon isotopes δ13С of organic matter and carbonates of soils of the Selenga Highlands. The δ13С values of soils vary from -28.88 to -22.98‰, which indicates the formation of their organic matter when the C3 plant biomass enters. Fractionation of isotopes during the mineralization of organic matter leads to an increase in δ13С values with the depth. At the same time, in soils formed under steppe landscapes, the increase in δ13С is about 3‰. In dry soils of the Selenga Highlands, a pronounced lightening of the composition of stable carbon isotopes of organic matter is observed.
Keywords:
organic matter, carbonates, carbon isotopic composition δ13C, C3 plants, microbial destruction, halophytic ecosystems.
List of references:
Article.pdf