A shift from nitrification to denitrification-dominated N_2O emission in an acidic soil following organic amendment
A shift from nitrification to denitrification-dominated N_2O emission in an acidic soil following organic amendment
复制标题
有机改良后酸性土壤中N_2O排放从硝化为主转变为反硝化为主
DOI：
10.1007/s00374-022-01680-7
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发表时间：
2022-11
影响因子：
6.5
通讯作者：
Jing Wang;Qiao Huang;Yong Li;Xiaoshun Tu;Zhaoxiong Chen;Ahmed S. Elrys;Yi Cheng;Lifeng Ma
中科院分区：
文献类型：
--
作者：
Jing Wang;Qiao Huang;Yong Li;Xiaoshun Tu;Zhaoxiong Chen;Ahmed S. Elrys;Yi Cheng;Lifeng Ma
Acidic soils are hotspots of global nitrous oxide (N2O) emission. The application of organic fertilizer with low carbon (C) to nitrogen (N) ratio (C:N) often stimulated N2O emission in acidic soils. However, how its use increases acidic soil N2O emission remains largely unclear. We thus conducted an aerobic15N tracing incubation experiment to quantify the effects of organic fertilizer input with low C:N on the contribution of denitrification and autotrophic and heterotrophic nitrification to N2O emission in an acidic soil. We found a shift from nitrification to denitrification-dominated N2O emission after adding organic fertilizer with low C:N into the studied acidic soil, and this shift was more pronounced with increasing the application rate of organic material. Therefore, organic fertilizer application with low C:N may stimulate N2O emission in acidic soils due to the stimulation of denitrification.
