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Soil moisture mediates microbial carbon and phosphorus metabolism during vegetation succession in a semiarid region

文献类型：期刊论文

作者Cui, Yongxing1,2; Wang, Xia1,2; Zhang, Xingchang1; Ju, Wenliang1,2; Duan, Chengjiao1,2; Guo, Xiaobin3; Wang, Yunqiang4,5; Fang, Linchuan1,4
刊名SOIL BIOLOGY & BIOCHEMISTRY
出版日期2020-08-01
卷号147页码:11
关键词Extracellular enzymatic stoichiometry Microbial nutrient limitation Carbon use efficiency Vegetation succession Loess plateau
ISSN号0038-0717
DOI10.1016/j.soilbio.2020.107814
通讯作者Fang, Linchuan(flinc629@hotmail.com)
英文摘要Revegetation of semiarid lands depends upon soil microbial communities to supply nutrients for successive plant species, but microbial activity can be constrained by insufficient water. The objective of this study was to quantify the metabolic limitation of microbes by extracellular enzymatic stoichiometry, and to determine how this affected microbial carbon use efficiency (CUE) with biogeochemical equilibrium model. The study occurred in long-term revegetation experiment with seven successional stages (0, 11, 35, 60, 100, 130 and 150 years) in the Loess Plateau, China. Microbes maintained stoichiometric homeostasis in all successional stages, but plants did not. Microbial metabolism was limited by low soil phosphorus (P) concentration throughout the succession, whereas plants were limited by low soil P during the late successional stages (from 60 to 150 years) only. An increase in soil moisture during succession was associated with greater P limitation in microbes and plants. There was less microbial P limitation at the 35-year successional stage, and the greatest microbial P limitation occurred at the 130-year successional stage. The microbial C limitation followed a unimodal pattern through the vegetation succession and reached a maximum at 100 years of succession (the early forest stage). This coincided with the lowest microbial CUE at 100 years of succession (CUE was from 0.24 to 0.41), suggesting a change in the physiological responses from microbes (such as enzyme synthesis and the priming effect), that tended to reduce soil C sequestration. Our results indicate that soil moisture regulated microbial C and P metabolism during the vegetation succession in this semiarid region, which has implications for understanding how microbial metabolism affects soil C dynamics under vegetation restoration.
WOS关键词USE EFFICIENCY ; LOESS PLATEAU ; ECOENZYMATIC STOICHIOMETRY ; EXTRACTION METHOD ; NUTRIENT LIMITATION ; COMMUNITY STRUCTURE ; CNP STOICHIOMETRY ; ENZYME-ACTIVITY ; NITROGEN ; DYNAMICS
资助项目Chinese Academy of Sciences[XDB40020202] ; National Natural Science Foundation of China[41330852] ; National Natural Science Foundation of China[41571314] ; CAS Light of West China Program[XAB2016A03] ; State Key Research & Development Plan Project[2017YFC0504504]
WOS研究方向Agriculture
语种英语
WOS记录号WOS:000541372500001
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Chinese Academy of Sciences ; National Natural Science Foundation of China ; CAS Light of West China Program ; State Key Research & Development Plan Project
源URL[http://ir.ieecas.cn/handle/361006/14964]  
专题地球环境研究所_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Fang, Linchuan
作者单位1.Inst Soil & Water Conservat CAS&MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Govt Newfoundland & Labrador, Agr Prod & Res Div, Dept Fisheries & Land Resources, Corner Brook, NF A2H 6J8, Canada
4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
5.Inst Earth Environm CAS, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714		 Cui, Yongxing,Wang, Xia,Zhang, Xingchang,et al. Soil moisture mediates microbial carbon and phosphorus metabolism during vegetation succession in a semiarid region[J]. SOIL BIOLOGY & BIOCHEMISTRY,2020,147:11.
APA Cui, Yongxing.,Wang, Xia.,Zhang, Xingchang.,Ju, Wenliang.,Duan, Chengjiao.,...&Fang, Linchuan.(2020).Soil moisture mediates microbial carbon and phosphorus metabolism during vegetation succession in a semiarid region.SOIL BIOLOGY & BIOCHEMISTRY,147,11.
MLA Cui, Yongxing,et al."Soil moisture mediates microbial carbon and phosphorus metabolism during vegetation succession in a semiarid region".SOIL BIOLOGY & BIOCHEMISTRY 147(2020):11.

入库方式： OAI收割

来源：地球环境研究所

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