CAJ | 학술논문

初始地球的氮素循环是由大气反应和缓慢的地质过程来控制的。在大约27亿年前，微生物代谢逐渐进化成为控制地球氮素转化的最核心驱动力，使得地球上的氮循环逐渐进化成为现在的模式。不同的微生物过程会产生不同的氮稳定同位素分馏，这种分馏的信号会储存于古生物介质中，因此通过分析古生物介质中氮的稳定同位素值，可以重构古海洋的氮素生物地球化学循环过程。
초시지구적담소순배시유대기반응화완만적지질과정래공제적。재대약27억년전，미생물대사축점진화성위공제지구담소전화적최핵심구동력，사득지구상적담순배축점진화성위현재적모식。불동적미생물과정회산생불동적담은정동위소분류，저충분류적신호회저존우고생물개질중，인차통과분석고생물개질중담적은정동위소치，가이중구고해양적담소생물지구화학순배과정。
The earliest nitrogen cycle on the earth was controlled by both atmospheric reactions and geological processes. Approximately 2.7 billion years ago, a linked suite of microbial processes evolved to be the most crucial driving force to control the nitrogen transformation, resulting in the current modern nitrogen cycling model. There is a different isotope effect associated with different microbial metabolism and this signal of isotope fractionation is reserved in the palaeobios. Therefore, nitrogen biogeochemical cycle in ancient oceans could be reconstructed by analyzing the stable isotopic ratio of nitrogen in the palaeobios.