Microbes drive global soil nitrogen mineralization and availability

doi:10.1111/gcb.14557

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Microbes drive global soil nitrogen mineralization and availability
	Li, Zhaolei ; Tian, Dashuan ; Wang, Bingxue ; Wang, Jinsong ; Wang, Song 5; Chen, Han Y. H.; Xu, Xiaofeng 1; Wang, Changhui 3; He, Nianpeng 5; Niu, Shuli 5
刊名	GLOBAL CHANGE BIOLOGY
	2019
卷号	25 期号:3 页码:1078-1088
关键词	croplands dominant factor microbial biomass natural ecosystems nitrogen availability nitrogen mineralization soil properties
ISSN号	1354-1013
DOI	10.1111/gcb.14557
文献子类	Article
英文摘要	Soil net nitrogen mineralization rate (N-min), which is critical for soil nitrogen availability and plant growth, is thought to be primarily controlled by climate and soil physical and/or chemical properties. However, the role of microbes on regulating soil N-min has not been evaluated on the global scale. By compiling 1565 observational data points of potential net N-min from 198 published studies across terrestrial ecosystems, we found that N-min significantly increased with soil microbial biomass, total nitrogen, and mean annual precipitation, but decreased with soil pH. The variation of N-min was ascribed predominantly to soil microbial biomass on global and biome scales. Mean annual precipitation, soil pH, and total soil nitrogen significantly influenced N-min through soil microbes. The structural equation models (SEM) showed that soil substrates were the main factors controlling N-min when microbial biomass was excluded. Microbe became the primary driver when it was included in SEM analysis. SEM with soil microbial biomass improved the N-min prediction by 19% in comparison with that devoid of soil microbial biomass. The changes in N-min contributed the most to global soil NH4+-N variations in contrast to climate and soil properties. This study reveals the complex interactions of climate, soil properties, and microbes on N-min and highlights the importance of soil microbial biomass in determining N-min and nitrogen availability across the globe. The findings necessitate accurate representation of microbes in Earth system models to better predict nitrogen cycle under global change.
学科主题	Biodiversity Conservation ; Ecology ; Environmental Sciences
电子版国际标准刊号	1365-2486
出版地	HOBOKEN
WOS关键词	ORGANIC-MATTER MINERALIZATION ; TEMPERATURE SENSITIVITY ; ENZYME-ACTIVITIES ; N MINERALIZATION ; CLIMATE-CHANGE ; CARBON-CYCLE ; BIOMASS ; RESPIRATION ; RESPONSES ; PH
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000459456700024
资助机构	Ministry of Science and Technology of ChinaMinistry of Science and Technology, China [2016YFC0501803] ; Postdoctoral Science Foundation of ChinaChina Postdoctoral Science Foundation [2018M641459] ; CAS international collaboration program [131A11KYSB20180010] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31625006]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19542]
专题	植被与环境变化国家重点实验室
作者单位	1.Chen, Han Y. H.] Lakehead Univ, Fac Nat Resources Management, Thunder Bay, ON, Canada 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 3.San Diego State Univ, Dept Biol, San Diego, CA 92182 USA 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhaolei,Tian, Dashuan,Wang, Bingxue,et al. Microbes drive global soil nitrogen mineralization and availability[J]. GLOBAL CHANGE BIOLOGY,2019,25(3):1078-1088.
APA	Li, Zhaolei.,Tian, Dashuan.,Wang, Bingxue.,Wang, Jinsong.,Wang, Song.,...&Niu, Shuli.(2019).Microbes drive global soil nitrogen mineralization and availability.GLOBAL CHANGE BIOLOGY,25(3),1078-1088.
MLA	Li, Zhaolei,et al."Microbes drive global soil nitrogen mineralization and availability".GLOBAL CHANGE BIOLOGY 25.3(2019):1078-1088.