Figure 4. Cycle of biologically driven N transformations that occur in natural and human-influenced terrestrial and marine environments. Nitrogen (N₂) fixation (step 1) and N assimilation (from ammonium, nitrate, or organic N, step 2) are anabolic processes, whereas mineralization (step 3), nitrification (steps 4−6), DNRA (steps 7, 15), denitrification (steps 7−11), and anammox (anaerobic ammonium oxidation, steps 12−14) are (or are a consequence of) catabolic processes. Abiotic sources of fixed N enter the biological N cycle as ammonium and nitrate. Note, the typo “nitrate oxidation” above arrow 7 in the original published version of Figure 4 has been corrected to display “nitrate reduction” in the revised figure shown here. This article has not yet been cited by other publications. Figure 4. Cycle of biologically driven N transformations that occur in natural and human-influenced terrestrial and marine environments. Nitrogen (N₂) fixation (step 1) and N assimilation (from ammonium, nitrate, or organic N, step 2) are anabolic processes, whereas mineralization (step 3), nitrification (steps 4−6), DNRA (steps 7, 15), denitrification (steps 7−11), and anammox (anaerobic ammonium oxidation, steps 12−14) are (or are a consequence of) catabolic processes. Abiotic sources of fixed N enter the biological N cycle as ammonium and nitrate. Note, the typo “nitrate oxidation” above arrow 7 in the original published version of Figure 4 has been corrected to display “nitrate reduction” in the revised figure shown here.

中文翻译：

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对“全球氮循环：氮预算和动力学的关键酶，生物和过程”的更正。

图4.在自然和人为影响的陆地和海洋环境中发生的生物驱动的氮转化的循环。氮（N ₂）的固定（步骤1）和N同化（从铵，硝酸盐，或有机N，步骤2）是合成代谢过程，而矿化（步骤3），硝化（步骤4-6），DNRA（步骤7， 15），反硝化（步骤7-11）和厌氧氨氧化（厌氧铵氧化，步骤12-14）是分解代谢过程（或由分解代谢过程引起）。固定氮的非生物来源以铵和硝酸盐形式进入生物氮循环。注意，已修正图4原始发布版本中箭头7上方的错字“硝酸盐氧化”，以在此处显示的修订图中显示“硝酸盐还原”。本文尚未被其他出版物引用。图4.在自然和人为影响的陆地和海洋环境中发生的生物驱动的氮转化的循环。氮（N ₂）的固定（步骤1）和N同化（从铵，硝酸盐，或有机N，步骤2）是合成代谢过程，而矿化（步骤3），硝化（步骤4-6），DNRA（步骤7， 15），反硝化（步骤7-11）和厌氧氨氧化（厌氧铵氧化，步骤12-14）是分解代谢过程（或由分解代谢过程引起）。固定氮的非生物来源以铵和硝酸盐形式进入生物氮循环。注意，已修正图4原始发布版本中箭头7上方的错字“硝酸盐氧化”，以在此处显示的修订图中显示“硝酸盐还原”。