Die Herkunft des Begriffs TANGEL, seine derzeitige Definition und eine Möglichkeit zu dessen Weiterentwicklung

Translated title of the contribution: The origin of the term TANGEL, its current definition and a possibility for its further development

Eckart Kolb, Axel Göttlein

Research output: Contribution to journalArticlepeer-review

Abstract

Tangelhumus - thick layers of humus on carbonate rocks - we know almost exclusively from the Alps. Due to different soil classification systems, Tangel is not understood in the same way everywhere, respectively comparable forms of humus are given different names. The increasing importance of being able to communicate and work across borders makes it necessary either to standardize terms or at least to understand what others understand by them. This article is therefore divided into three parts. First, older works dealing with tangel or mighty humus deposits in the Alps have been evaluated and the national terms contained therein have been explained comparatively. Thus, the first descriptions of thick humus layers by Sendtner date back to 1854. In the second part, we comparatively present the tangel definitions of the national classification systems used in the Alpine region, as well as the proposal of the European Humus Research Group, which was elaborated in the years 2003 to 2018, with the aim to make proposals for a harmonization of humus form definitions in Europe. In the third part, we address important aspects for the further development of the definition of Tangelhumus, from the authors’ point of view. This aspect takes into account the potential genesis of tangel and thus makes the small-scale coexistence of these humus layers and mineral soil understandable. Also, the clear separation of O/C soils (humus over parent rock) and A/C soils (mineral soil over parent rock), which in many classifications separates genetically closely related soils at a high classification level, is partially abandoned in this proposal to facilitate understanding of typical soil associations in the upper forested stage of the Alps. Nevertheless, the definitions allow a clear distinction from moder-, mor- and amphi-humus forms. Furthermore, it is discussed whether Tangel occur exclusively on carbonate rocks or can also occur on silicate rocks.

Translated title of the contributionThe origin of the term TANGEL, its current definition and a possibility for its further development
Original languageGerman
Pages (from-to)5-19
Number of pages15
JournalWaldokologie Online
Volume20
StatePublished - 2021

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