The stoichiometry of soil microbial biomass determines metabolic quotient of nitrogen mineralization
文献类型：期刊论文
| 作者 | Li,Zhaolei1,2; Zeng,Zhaoqi1,3; Tian,Dashuan1; Wang,Jinsong1; Fu,Zheng1; Wang,Bingxue1; Tang,Ze1,3; Chen,Weinan1,3; Chen,Han Y H4; Wang,Changhui5 |
| 刊名 | Environmental Research Letters
 |
| 出版日期 | 2020-02-18 |
| 卷号 | 15期号:3 |
| 关键词 | dominant driver global warming metabolic quotient natural ecosystems nitrogen cycling stoichiometry of microbial biomass |
| DOI | 10.1088/1748-9326/ab6a26 |
| 英文摘要 | Abstract Soil nitrogen (N) mineralization is crucial for the sustainability of available soil N and hence ecosystem productivity and functioning. Metabolic quotient of N mineralization (Qmin), which is defined as net soil N mineralization per unit of soil microbial biomass N, reflects the efficiency of soil N mineralization. However, it is far from clear how soil Qmin changes and what are the controlling factors at the global scale. We compiled 871 observations of soil Qmin from 79 published articles across terrestrial ecosystems (croplands, forests, grasslands, and wetlands) to elucidate the global variation of soil Qmin and its predictors. Soil Qmin decreased from the equator to two poles, which was significant in the North Hemisphere. Soil Qmin correlated negatively with soil pH, total soil N, the ratio of soil carbon (C) to N, and soil microbial biomass C, and positively with mean annual temperature and C:N ratio of soil microbial biomass at a global scale. Soil microbial biomass, climate, and soil physical and chemical properties in combination accounted for 41% of the total variations of global soil Qmin. Among those predictors, C:N ratio of soil microbial biomass was the most important factor contributing to the variations of soil Qmin (the standardized coefficient?=?0.39) within or across ecosystem types. This study emphasizes the critical role of microbial stoichiometry in soil N cycling, and suggests the necessity of incorporating soil Qmin into Earth system models to better predict N cycling under environmental change. |
| 语种 | 英语 |
| 出版者 | IOP Publishing |
| WOS记录号 | IOP:1748-9326-15-3-AB6A26 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/129469]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 1.Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China 2.National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Taian 271018, People’s Republic of China 3.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 4.Faculty of Natural Resources Management, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada 5.State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, People’s Republic of China 6.School of Earth and Environmental Sciences, Queens College of the City University of New York, New York 11367, United States of America |
| 推荐引用方式 GB/T 7714 | Li,Zhaolei,Zeng,Zhaoqi,Tian,Dashuan,et al. The stoichiometry of soil microbial biomass determines metabolic quotient of nitrogen mineralization[J]. Environmental Research Letters,2020,15(3). |
| APA | Li,Zhaolei.,Zeng,Zhaoqi.,Tian,Dashuan.,Wang,Jinsong.,Fu,Zheng.,...&Niu,Shuli.(2020).The stoichiometry of soil microbial biomass determines metabolic quotient of nitrogen mineralization.Environmental Research Letters,15(3). |
| MLA | Li,Zhaolei,et al."The stoichiometry of soil microbial biomass determines metabolic quotient of nitrogen mineralization".Environmental Research Letters 15.3(2020). |
入库方式： OAI收割
来源：地理科学与资源研究所
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