Global Soil Gross Nitrogen Transformation Under Increasing Nitrogen Deposition
文献类型：期刊论文
| 作者 | Song, Lei1,2; Li, Zhaolei1; Niu, Shuli1,2 |
| 刊名 | GLOBAL BIOGEOCHEMICAL CYCLES
 |
| 出版日期 | 2021 |
| 卷号 | 35期号:1页码:12 |
| ISSN号 | 0886-6236 |
| 关键词 | nitrogen deposition gross N mineralization gross nitrification NH4+ immobilization NO3- immobilization |
| DOI | 10.1029/2020GB006711 |
| 通讯作者 | Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | Soil nitrogen (N) transformations, which regulate soil N availability, are important for ecosystem productivity and other functions. Nitrogen deposition influences soil N transformations, but it remains unclear how soil N transformations, especially microbial N immobilization, change with different N deposition rates. In this study, we compiled a global data set of gross N mineralization, nitrification, and microbial mineral N immobilization rates with different N addition treatments across terrestrial ecosystems to reveal their responses to different N deposition rates. The results showed that gross N mineralization and gross nitrification rates were stimulated by both low and high N additions, but the increments slightly decreased with increasing N addition rate. However, microbial ammonium (NH4+) and nitrate (NO3-) immobilization rates responded differently under low versus high N additions. They changed from being inhibited (NH4+ immobilization) or not affected (NO3- immobilization) under low N addition to being stimulated under high N addition (>55 kg N ha(-1) yr(-1)), performing a linear increase along with the increasing N addition rate. This challenges the traditional perception that N enrichment limits microbial N utilization. Our results suggest that the effects of N deposition on gross N transformations are highly dependent on N deposition rate. These findings indicate that biogeochemical models should take into account the differential responses of gross N transformations to different N addition rates to better predict ecosystem N cycling in the context of increasing N deposition. |
| WOS关键词 | AMMONIA-OXIDIZING BACTERIA ; EXTRACELLULAR ENZYME-ACTIVITIES ; MICROBIAL COMMUNITY COMPOSITION ; FOREST SOILS ; NITRIFICATION RATES ; FERTILIZATION ; METAANALYSIS ; TEMPERATE ; ARCHAEA ; CARBON |
| 资助项目 | National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31988102] ; International Partnership Program of Chinese Academy of Sciences[121311KYSB20170004] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000613330700004 |
| 资助机构 | National Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/160726]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Niu, Shuli |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Lei,Li, Zhaolei,Niu, Shuli. Global Soil Gross Nitrogen Transformation Under Increasing Nitrogen Deposition[J]. GLOBAL BIOGEOCHEMICAL CYCLES,2021,35(1):12. |
| APA | Song, Lei,Li, Zhaolei,&Niu, Shuli.(2021).Global Soil Gross Nitrogen Transformation Under Increasing Nitrogen Deposition.GLOBAL BIOGEOCHEMICAL CYCLES,35(1),12. |
| MLA | Song, Lei,et al."Global Soil Gross Nitrogen Transformation Under Increasing Nitrogen Deposition".GLOBAL BIOGEOCHEMICAL CYCLES 35.1(2021):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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