Rhizosphere as driver of subsoil organic matter distribution and composition

The objectives of the present sub-project are to understand the influence of roots and their associated microbiome on the composition, distribution and the amount of soil organic carbon in the subsoil and specifically in the subsoil rhizosphere. The main aspect will be the evolving spatial differentiation of the
soil organic carbon distribution due to roots growing into previously root free subsoil. We will work on the implementation of new methods to study zonal gradients around living and dead roots, as these zones play an important role in soil aggregation and thus also organic matter stabilization. These effects lead to increased spatial heterogeneities in subsoils in contrast to organic rich topsoils. We will use a cascade of experiments with increasing complexity starting from artificial root systems to natural roots of beech seedlings. These are then cross-checked with the results from the investigations at the field sites of the research unit.

Project leader

Dr. Carsten W. Müller
TU München
Chair of Soil Science

Emil-Ramann-Straße 2
85350 Freising-Weihenstephan

 

Contact:
Phone: +49 (0) 8161 71-4423
Mail to: carsten.mueller(at)wzw.tum.de

Prof. Dr. Ingrid Kögel-Knabner
TU München
Chair of Soil Science

Emil-Ramann-Straße 2
85350 Freising-Weihenstephan

 

Contact:
Phone: +49 (0) 8161 71-3677
Mail to: koegel(at)wzw.tum.de

Ph.D. student

M.Sc. Vera L. Baumert
TU München
Chair of Soil Science

Emil-Ramann-Straße 2
85350 Freising-Weihenstephan

 

Contact:
Phone: +49 (0) 8161 71-4206
Mail to: vera.baumert(at)wzw.tum.de