Soils are the largest terrestrial carbon reservoir, and enhancing the long-term persistence of soil organic matter (SOM) is a key strategy for mitigating atmospheric CO₂ concentrations. Yet, the mechanisms that govern SOM stabilization—and the interventions that might enhance it—remain among the most complex and debated challenges in soil science.
Recent advances have deepened our understanding of SOM fractionation and protection mechanisms, particularly the role of mineral-associated organic matter (MAOM), particulate organic matter (POM), and occluded POM (oPOM). Insights into the biotic and abiotic pathways leading to MAOM formation have expanded significantly, alongside the development of new-generation soil models that incorporate these processes into SOM turnover estimates.
At the same time, emerging evidence underscores the complex and context-dependent nature of the soil mineral–microbe–vegetation interface. In particular, studies beyond temperate systems reveal that organo-mineral interactions are more dynamic than previously assumed, and that POM can persist for centuries in certain ecosystems or soil horizons. These findings challenge conventional assumptions and highlight the need for tailored management strategies.
This session invites contributions that explore SOM dynamics across scales—from molecular mechanisms and microbial processes to ecosystem-level patterns and global models. We welcome studies that introduce novel insights, challenge established paradigms, or provide robust confirmations of existing theories. Whether your work is based on field observations, laboratory experiments, or computational modeling, we are eager to hear how it advances our understanding of SOM persistence and informs practical applications, from land management to climate policy.
We particularly encourage early career scientists to participate, including those with preliminary findings or innovative conceptual approaches. If your research touches on any aspect of SOM formation, transformation, or stabilization, join us for a lively and interdisciplinary discussion.