Das Ausgangsmaterial als wesentlicher Faktor für die Eigenschaften der biogeochemischen Grenzflächen in Böden: integrative Analyse

The formation of biogeochemical interfaces in soils is controlled, among other factors, by the type of particle surfaces present and the assemblage of organic matter and mineral particles. Therefore, the formation and maturation of interfaces is studied with artificial soils which are produced in long-term biogeochemical laboratory incubation experiments (3, 6, 12, 18 months. Clay minerals, iron oxides and charcoal are used as major model components controlling the formation of interfaces because they exhibit high surface area and microporosity. Soil interface characteristics have been analyzed by several groups involved in the priority program for formation of organo-mineral interfaces, sorptive and thermal interface properties, microbial community structure and function. Already after 6 months of incubation, the artificial soils exhibited different properties in relation to their composition. A unique dataset evolves on the development and the dynamics of interfaces in soil in the different projects contributing to this experiment. An integrated analysis based on a conceptual model and multivariate statistics will help to understand overall processes leading to the biogeochemical properties of interfaces in soil, that are the basis for their functions in ecosystems. Therefore, we propose to establish an integrative project for the evaluation of data obtained and for publication of synergistic work, which will bring the results to a higher level of understanding.

DFG-Verfahren Schwerpunktprogramme

Teilprojekt zu SPP 1315:  Biogeochemical Interfaces in Soil

Beteiligte Personen Professor Dr. Jörg Bachmann; Professorin Dr. Ellen Kandeler; Professorin Dr. Gabriele Schaumann; Professor Dr. Michael Schloter; Professorin Dr. Kornelia Smalla