Projektbeschreibung
Verbesserte Erdmodelle beziehen Bodenstruktur ein
Die Bodenstruktur, die von der biologischen Aktivität, der Landbewirtschaftung und der Zeit beeinflusst wird, wirkt sich erheblich darauf aus, wie der Boden Feuchtigkeit speichern und leiten kann. In Erdsystemmodellen findet sie jedoch derzeit zu wenig Berücksichtigung. Ziel des über die Marie-Skłodowska-Curie-Maßnahmen finanzierten Projekts MOSS ist es, eine physikalische Methode zu entwickeln, um detaillierte Bodenstrukturdaten in diese Modelle einzubeziehen. Diese Methode wird in ein fortgeschrittenes Erdsystemmodell implementiert und zur Quantifizierung der Auswirkungen der Bodenstruktur auf die Kohlendioxidsenke des Bodens verwendet. Die vorgeschlagene Methode könnte Einfluss auf politische Entscheidungen und erhebliche Auswirkungen auf agronomische und hydrologische Modelle haben.
Ziel
The spatial arrangement of solids and pore spaces within soil (soil structure) is a major source of variability in the hydraulic properties of soils. It is through changes in soil structure that biological activity, land management, or the passage of time (including wet-dry and freeze-thaw cycles) affect the capacity of soil to retain and conduct moisture. Nevertheless, soil structure is at most tentatively represented in Earth-system models. As a result, we cannot quantify the effect of biological activity and management on soil water content and thus their full effect on the regional climate or the land carbon sink. This represents an important gap in our understanding of the natural environment, as well as a potential blind spot in our response to the climate emergency. Including soil structure in land-surface models is difficult, because its effect on the soil hydraulic properties cannot be reliably predicted based on a single, easy-to-measure quantity such as bulk density. At the same time, more detailed soil structure data and the methods to incorporate it are largely missing. MOSS will address these issues by 1)~developing a physics-based method of incorporating beyond-density soil structure information into the models of soil hydraulic properties, 2)~implementing this method in a state-of-the-art Earth-system model, and 3)~using the new model to quantify the impact of soil structure on the land carbon sink. By doing so, MOSS will likely demonstrate that soil structure must be included in numerical models and protected in the field. Moreover, the method developed by MOSS will be applicable to agronomical and hydrological models and thus will have a plausible impact on the socially and economically important policy decisions these models inform. Finally, because of the interdisciplinary background of the researcher, we expect that the high visibility and copious training program offered by the fellowship will have a defining impact on their scientific career.
Schlüsselbegriffe
Programm/Programme
- HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA) Main Programme
Aufforderung zur Vorschlagseinreichung
(öffnet in neuem Fenster) HORIZON-MSCA-2022-PF-01
Andere Projekte für diesen Aufruf anzeigenFinanzierungsplan
HORIZON-TMA-MSCA-PF-EF -Koordinator
75230 Paris
Frankreich