Emerging Virtual Special Issues of SBB: Open Calls Microbial necromass on the rise in SOM: advances, challenges, and perspectives
• 大类 : 农林科学 - 1区
• 小类 : 土壤科学 - 1区
Soil carbon transformation and sequestration have been actively discussed over recent years due to our evolving thinking on SOM formation. It has long been believed that remnants of decayed plant matter were the main components of the stabilized carbon in soils, but evolving analytical approaches and increasing evidence have led to the paradigm shift that dead microbial mass may be the dominating components of the long-lasting soil carbon rather than decayed plant matter; this is shifting the research focus from “humic” matter to the microbial contribution has led to growing understanding of microbial anabolism and necromass as carbon gains for soil ecosystems, including the details of any related SOM processes. This new insight is changing how we think about SOM and its formation and dynamics; it has implications for national and global discussions on carbon budgets, soil vulnerability and sustainability of soils for food production, ecological services, climate health and policy, and hence on soil management.
Microbial communities are both drivers and contributors of SOM dynamics. Soil organic matter is complex and contains diverse chemical compounds. Thus, linking both microbial functions with intricate SOM can offer opportunities for exciting new studies. Recent progress in -omics technologies of complex communities and cutting-edge chemical analysis of complex mixtures, together with multi-isotope and imaging approaches, enlarge the research opportunities for the focused topic. The latest modeling approaches (e.g. in systems ecology) and conceptual frameworks (e.g. microbial carbon pump) also open up new vistas to study the topic.
Belowground knowledge of process details is always far to be satisfactory. Soil microbial necromass research is invaluable, and relevant research is timely given the current state of the ‘SOM paradigm shift’.