Adamczyk Bartosz
Natural Resources Institute Finland, Helsinki, Finland.
Bioessays. 2021 Jul;43(7):e2100010. doi: 10.1002/bies.202100010. Epub 2021 May 6.
Boreal forests store a globally significant pool of carbon (C), mainly in tree biomass and soil organic matter (SOM). Although crucial for future climate change predictions, the mechanisms underlying C stabilization are not well understood. Here, recently discovered mechanisms behind SOM stabilization, their level of understanding, interrelations, and future directions in the field are provided. A recently unraveled mechanism behind C stabilization via interaction of root-derived tannins with fungal necromass emphasizing fungal necromass chemistry is brought forth. The long-lasting dogma of the stability of SOM on minerals is challenged and the newest insights from the field of soil fauna and their influence on SOM stabilization are provided. In conclusion, mechanisms unraveled during the last decade are crucial steps forward to draw a holistic view of the main drivers of SOM stabilization.
北方森林储存着全球重要的碳库，主要存在于树木生物量和土壤有机质（SOM）中。尽管这对于未来气候变化预测至关重要，但碳稳定的潜在机制尚未得到充分理解。本文提供了SOM稳定背后最近发现的机制、对其的理解程度、相互关系以及该领域的未来方向。提出了一种最近揭示的通过根系衍生的单宁与真菌坏死物质相互作用实现碳稳定的机制，强调了真菌坏死物质的化学性质。SOM在矿物上稳定性的长期教条受到挑战，并提供了土壤动物领域的最新见解及其对SOM稳定的影响。总之，过去十年中揭示的机制是朝着全面了解SOM稳定的主要驱动因素迈出的关键一步。
