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The stoichiometry of soil microbial biomass determines metabolic quotient of nitrogen mineralization

文献类型：期刊论文

作者Li, Zhaolei4; Zeng, Zhaoqi3; Tian, Dashuan; Wang, Jinsong; Fu, Zheng; Wang, Bingxue; Tang, Ze3; Chen, Weinan3; Chen, Han Y. H.; Wang, Changhui6
刊名ENVIRONMENTAL RESEARCH LETTERS
出版日期2020
卷号15期号:3
ISSN号1748-9326
关键词dominant driver global warming metabolic quotient natural ecosystems nitrogen cycling stoichiometry of microbial biomass
DOI10.1088/1748-9326/ab6a26
文献子类Article
英文摘要Soil nitrogen (N) mineralization is crucial for the sustainability of available soil N and hence ecosystem productivity and functioning. Metabolic quotient of N mineralization (Q(min)), 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 Q(min) changes and what are the controlling factors at the global scale. We compiled 871 observations of soil Q(min) from 79 published articles across terrestrial ecosystems (croplands, forests, grasslands, and wetlands) to elucidate the global variation of soil Q(min) and its predictors. Soil Q(min) decreased from the equator to two poles, which was significant in the North Hemisphere. Soil Q(min) 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 Q(min). Among those predictors, C:N ratio of soil microbial biomass was the most important factor contributing to the variations of soil Q(min) (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 Q(min) into Earth system models to better predict N cycling under environmental change.
学科主题Environmental Sciences ; Meteorology & Atmospheric Sciences
出版地BRISTOL
WOS关键词ENZYME-ACTIVITY ; LAND-USE ; TEMPERATURE SENSITIVITY ; COMMUNITY STRUCTURE ; FOREST ; CARBON ; GRASSLAND ; RESPONSES ; BACTERIAL ; ECOSYSTEM
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000537405400003
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31988102, 31625006] ; CAS international collaboration program [131A11KYSB20180010] ; Postdoctoral Science Foundation of ChinaChina Postdoctoral Science Foundation [2018M641459]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/21740]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Shandong Agr Univ, Coll Resources & Environm, Key Lab Agr Environm Univ Shandong, Natl Engn Lab Efficient Utilizat Soil & Fertilize, Tai An 271018, Shandong, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
5.CUNY Queens Coll, Sch Earth & Environm Sci, Flushing, NY 11367 USA
6.Chen, Han Y. H.] Lakehead Univ, Fac Nat Resources Management, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada
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：植物研究所

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