Title of
Journal：
Communications Earth & Environment
Paper
Code：
Volume：
7
Number：
Page：
288
Others：
Classification：
Source：
Abstract：
Microbial-driven processes, particularly denitrification and anaerobic ammonium oxidation (anammox), convert inorganic nitrogen (N) in soils into gaseous forms, causing substantial N losses. However, their responses to global change across ecosystem types remain unclear. Here, we synthesized global data on denitrification and anammox from experiments examining major global change factors (GCFs), including elevated CO2, N addition, warming, and altered precipitation. Our analysis shows that N addition markedly stimulated both processes, and warming enhanced denitrification. On average, multiple GCFs exerted stronger effects on N-loss processes than single or two GCFs. These effects are ecosystem dependent, with croplands being the most affected, particularly under N addition. Furthermore, the sensitivity of N-loss processes to each GCF varies greatly among ecosystems and is largely explained by local climate and soil conditions. Our findings reveal accelerated soil N losses under multifactor global change and offer insights for improving future N-cycle predictions and sustainable N management.
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