Description: Das Projekt "Stabilization of organic matter by layer silikates - quality and turnover of interaction products" wird vom Umweltbundesamt gefördert und von Universität Halle-Wittenberg, Institut für Bodenkunde und Pflanzenernährung durchgeführt. The overall goal of this proposal is to determine quantitative and qualitative relationships between carbon sequestration and clay mineralogy. The idea behind the project is that a extended period of fertilizer depletion combined with continued nutrient removal through plants will lead to changes in organic matter composition as well as to changes in the clay minerals assemblage (mainly through K-depletion in illitic materials). This in turn implies modifications in the physical properties as well as in the stability of the predominating clay-organic matter associations. We intend to investigate such changes on short, medium and long timescales. We will use experiments dating from 1902, 1956 and 1982. The overall goal will be devided in the following sub goals: a) which are the mechanisms behind the protective capacity of the mineral assemblage, b) what is the influence of clay mineralogy on stabilisation rates, c) how does the clay mineral assemblage influence proportion and type of organic matter associated with clay minerals, d) are there pathways from the pool of easily degradable organic matter into the pool of organic matter, that is stabilized through interaction with clay minerals, e) which rates of transfer are applicable here.
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Düngemittel ? Blei ? Organisches Material ? Bodenbildung ? Mineralogie ? Mineral ? CCS-Technologie ? CO2-Abscheidung und -Speicherung ?
Region: Sachsen-Anhalt
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 2000-06-27 - 2025-03-31
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