Diagnostic Horizons in the Classification System of Russian Soils:Version 2021статья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 октября 2021 г.
Аннотация:Abstract—Updating the classification system of Russian soils as a preliminary procedure to the development
of its new version is provided by new data, extensive testing of the system in terrain conditions, online and
offline discussions, validation in the course of cartographic works, and addressing to the international experience.
The first step in updating—analysis of diagnostic horizons as basic elements of the system—comprised
scrutinizing the array of horizons, checking their essence, and improving the scheme of their presentation in
the system, which is believed to be more convenient and up-to-date. Eleven horizons were moved to a lower
category of diagnostic properties. However, it was proposed to enlarge the set of human- modified horizons
by introducing the technogenic horizons in addition to the agrogenic horizons, to add a special chernozemic
horizon (like chernic horizon in the WRB), and to separate the mesotrophic peat horizon from eutrophic and
oligotrophic peat horizons. In the definitions of diagnostic horizons, more strict and formal criteria were formulated
along with descriptive characteristics of pedogenesis and the environment. Hence, the volume of
definitions of diagnostic horizons increased by approximately three times on the average, while the definitions
of diagnostic criteria were preserved intact. Names or symbols were modified for several horizons. As a
result, the total number of diagnostic horizons decreased from 51 in the former version-2008 to 47 in the proposed
updated version. This paper presents the updated list of horizons and three examples of their revised
definitions in the expected updated version. The article provides a proposed general list of diagnostic horizons
and 3 examples of new horizon descriptions.