Soil extracellular enzyme stoichiometry reflects the shift from P- to N-limitation of microorganisms with grassland restoration | |
Yang, Yang1,2,3; Liang, Chao4; Wang, Yunqiang1,2; Cheng, Huan5,6; An, Shaoshan3; 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 | |
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. |
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