Autor:innen:
Dr. Sara König | Helmholtz Centre for Environmental Research - UFZ | Germany
Ulrich Weller | Helmholtz Centre for Environmental Research - UFZ
Bibiana Betancur-Corredor | Senckenberg Museum of Natural History Görlitz
Birgit Lang | Senckenberg Museum of Natural History Görlitz
Thomas Reitz | Helmholtz Centre for Environmental Research - UFZ
Martin Wiesmeier | TUM Technical University of Munich
Dr. Ute Wollschläger | Helmholtz Centre for Environmental Research - UFZ
Hans-Jörg Vogel | Helmholtz Centre for Environmental Research - UFZ
The increasing demand for biomass for food, animal feed, fiber and bioenergy requires optimization of soil productivity, while, at the same time, protecting other soil functions such as nutrient cycling and buffering, carbon storage, habitat for biological activity, and water filter and storage. Therefore, one of the main challenges for sustainable agriculture is to produce high yields while maintaining all the other soil functions. Mechanistic simulation models are an essential tool for predicting soil functions as well as the complex interactions between these functions.
Here, we present our process-based systemic model BODIUM which integrates biological, physical and chemical processes in soil and at the soil-root interface to predict the effect of management activities on soil functions on the field scale. We first present simulations of a long-term field experiment to validate our model along the different soil functions. Then we apply different management scenarios to show the potential of our model for explorative scenario simulations, including tillage, different organic fertilizer treatments, and cover crops. We focus on the interactions of roots with soil structure and related water and nutrient dynamics.
Finally, we discuss ongoing model developments to further extend BODIUM such as the implementation of grassland, bioturbation, phosphorous dynamics, and fungal-bacterial interactions.