Black carbon, pyrogenic carbon
2023
Knicker, Heike | Knicker, Heike [0000-0002-0483-2109] | Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
Black carbon or pyrogenic carbon (PyC) represents a ubiquitous entity of soil organic matter (SOM). Presently, it is best described as a continuum of thermally altered biomolecules. The degree of their alteration depends on heat severity, heating conditions (oxic, pyrolysis), and the nature of the feedstock. Comparably, a paradigm shift occurred with respect to the biochemical recalcitrance of PyC taking into consideration that the latter depends not only on the degree of charring of the respective PyC but also relies on soil conditions. There is a clear effect on PyC properties (increasing pH, darkness, hydrophobicity, and plant nutrient contents), which can survive on a long-term scale. Thus, fire and biochar amendment may play an important role in pedogenetic processes. © 2023 Elsevier Ltd. All rights reserved.
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