Soil extracellular enzyme stoichiometry reflects the shift from P- to N-limitation of microorganisms with grassland restoration

doi:10.1016/j.soilbio.2020.107928

IEECAS OpenIR > 生态环境研究室

	Soil extracellular enzyme stoichiometry reflects the shift from P- to N-limitation of microorganisms with grassland restoration
	Yang, Yang 1,2,3; Liang, Chao 4; Wang, Yunqiang 1,2; Cheng, Huan 5,6; An, Shaoshan 3; Chang, Scott X.7,8
通讯作者	An, Shaoshan(shan@ms.iswc.ac.cn)
	2020-10-01
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
卷号	149 页码:8
摘要	Soil extracellular enzyme stoichiometry (EES), the ratio of extracellular enzyme activities (EEAs) related to the acquisition of nutrients such as carbon (C), nitrogen (N) and phosphorus (P), reflects the demand for resources by microorganisms. However, how grassland restoration shifts microbial nutrient limitation as indicated by soil EES remains unclear. Here, we evaluated microbial nutrient limitation by studying soil EES across a chronosequence of grassland restoration sites. The ratio of the natural logarithm of C-, N-, and P-acquiring enzymes in our studied system ranged from 1:1.47:1.05 to 1:0.82:1.38, and the average was 1:1.08:1.28, deviating from the global ratio of 1:1:1 and indicating that microorganisms were co-limited by N and P. Enzyme N:P ratio increased and vector angles decreased with time since restoration, suggesting that the restored grassland shifted from P-limitation (angles>45 degrees ) to N-limitation (angles<45 degrees ), and N limitation gradually exacerbated over time. Strong relationships between microbial biomass C:N:P ratios and soil EES suggest that soil EES was dependent on microbial resource availability. We also found that the variation in soil EES was better explained by biotic than by abiotic factors, and the total variation explained increased with time since restoration, indicating that biotic control over soil EES increased over time as the environmental conditions such as soil moisture availability and nutrients improved for microorganisms. Overall, this study highlights the utility of the ecoenzymatic stoichiometry approach in assessing relationships in microbial resource ecology, and such insights provide guidance in developing restoration strategies such as the need for nutrient management in grassland ecosystems.
关键词	Extracellular enzyme activity Microbial biomass Nutrient limitation Restoration ecology Vector analysis
DOI	10.1016/j.soilbio.2020.107928
关键词[WOS]	MICROBIAL COMMUNITY STRUCTURE ; CARBON-USE EFFICIENCY ; ECOENZYMATIC STOICHIOMETRY ; LOESS PLATEAU ; NUTRIENT ACQUISITION ; CLIMATE-CHANGE ; NITROGEN ; AVAILABILITY ; DYNAMICS ; REVEGETATION
收录类别	SCI ; SCI
语种	英语
资助项目	Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB40020000] ; National Natural Sciences Foundation of China[41671280] ; International Partnership Program of Chinese Academy of Sciences[161461KYSB20170013] ; CAS Light of West China Program[XAB2019B07]
WOS研究方向	Agriculture
项目资助者	Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Sciences Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; CAS Light of West China Program
WOS类目	Soil Science
WOS记录号	WOS:000567094800012
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：105[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15284
专题	生态环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	An, Shaoshan
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 3.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Rd Xinong 26, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang 110016, Peoples R China 5.Univ Maryland, Dept Biol, College Pk, MD 20742 USA 6.Sichuan Agr Univ, Coll Forestry, Chengdu 611130, Peoples R China 7.Univ Alberta, Dept Renewable Resources, Edmonton, AB T6G 2E3, Canada 8.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Linan 311300, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yang,Liang, Chao,Wang, Yunqiang,et al. Soil extracellular enzyme stoichiometry reflects the shift from P- to N-limitation of microorganisms with grassland restoration[J]. SOIL BIOLOGY & BIOCHEMISTRY,2020,149:8.
APA	Yang, Yang,Liang, Chao,Wang, Yunqiang,Cheng, Huan,An, Shaoshan,&Chang, Scott X..(2020).Soil extracellular enzyme stoichiometry reflects the shift from P- to N-limitation of microorganisms with grassland restoration.SOIL BIOLOGY & BIOCHEMISTRY,149,8.
MLA	Yang, Yang,et al."Soil extracellular enzyme stoichiometry reflects the shift from P- to N-limitation of microorganisms with grassland restoration".SOIL BIOLOGY & BIOCHEMISTRY 149(2020):8.