Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.16042 |
Stimulation of ammonia oxidizer and denitrifier abundances by nitrogen loading: Poor predictability for increased soil N2O emission | |
Yong Zhang; Feng Zhang; Diego Abalos; Yiqi Luo; Dafeng Hui; Bruce A. Hungate; Pablo Garcí; a-Palacios; Yakov Kuzyakov; Jø; rgen Eivind Olesen; Uffe Jø; rgensen; Ji Chen | |
2021-12-29 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | Unprecedented nitrogen (N) inputs into terrestrial ecosystems have profoundly altered soil N cycling. Ammonia oxidizers and denitrifiers are the main producers of nitrous oxide (N2O), but it remains unclear how ammonia oxidizer and denitrifier abundances will respond to N loading and whether their responses can predict N-induced changes in soil N2O emission. By synthesizing 101 field studies worldwide, we showed that N loading significantly increased ammonia oxidizer abundance by 107% and denitrifier abundance by 45%. The increases in both ammonia oxidizer and denitrifier abundances were primarily explained by N loading form, and more specifically, organic N loading had stronger effects on their abundances than mineral N loading. Nitrogen loading increased soil N2O emission by 261%, whereas there was no clear relationship between changes in soil N2O emission and shifts in ammonia oxidizer and denitrifier abundances. Our field-based results challenge the laboratory-based hypothesis that increased ammonia oxidizer and denitrifier abundances by N loading would directly cause higher soil N2O emission. Instead, key abiotic factors (mean annual precipitation, soil pH, soil C:N ratio, and ecosystem type) explained N-induced changes in soil N2O emission. Altogether, these findings highlight the need for considering the roles of key abiotic factors in regulating soil N transformations under N loading to better understand the microbially mediated soil N2O emission. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/345170 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Yong Zhang,Feng Zhang,Diego Abalos,et al. Stimulation of ammonia oxidizer and denitrifier abundances by nitrogen loading: Poor predictability for increased soil N2O emission[J]. Global Change Biology,2021. |
APA | Yong Zhang.,Feng Zhang.,Diego Abalos.,Yiqi Luo.,Dafeng Hui.,...&Ji Chen.(2021).Stimulation of ammonia oxidizer and denitrifier abundances by nitrogen loading: Poor predictability for increased soil N2O emission.Global Change Biology. |
MLA | Yong Zhang,et al."Stimulation of ammonia oxidizer and denitrifier abundances by nitrogen loading: Poor predictability for increased soil N2O emission".Global Change Biology (2021). |
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