State Key Laboratory of Marine Environmental Sciences, Xiamen University, 361005, China.
Nat Rev Microbiol. 2010 Aug;8(8):593-9. doi: 10.1038/nrmicro2386. Epub 2010 Jul 5.
The biological pump is a process whereby CO(2) in the upper ocean is fixed by primary producers and transported to the deep ocean as sinking biogenic particles or as dissolved organic matter. The fate of most of this exported material is remineralization to CO(2), which accumulates in deep waters until it is eventually ventilated again at the sea surface. However, a proportion of the fixed carbon is not mineralized but is instead stored for millennia as recalcitrant dissolved organic matter. The processes and mechanisms involved in the generation of this large carbon reservoir are poorly understood. Here, we propose the microbial carbon pump as a conceptual framework to address this important, multifaceted biogeochemical problem.
生物泵是一个过程，通过这个过程，上层海洋中的二氧化碳被初级生产者固定，并作为下沉的生物颗粒或溶解的有机物输送到深海。大部分这种输出物质的命运是再矿化成为二氧化碳，这些二氧化碳在深水中积累，直到最终在海面再次通风。然而，一部分固定碳不会被矿化，而是作为难以降解的溶解有机物储存数千年。生成这个巨大碳库的过程和机制还不太清楚。在这里，我们提出微生物碳泵作为一个概念框架来解决这个重要的、多方面的生物地球化学问题。
