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

doi:10.1016/j.soilbio.2020.107814

	Soil moisture mediates microbial carbon and phosphorus metabolism during vegetation succession in a semiarid region
	Cui, Yongxing 2,3; Wang, Xia 2,3; Zhang, Xingchang 2; Ju, Wenliang 2,3; Duan, Chengjiao 2,3; Guo, Xiaobin 4; Wang, Yunqiang 1,5; Fang, Linchuan 2,5
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	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
DOI	10.1016/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.
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关键词	USE EFFICIENCY ; LOESS PLATEAU ; ECOENZYMATIC STOICHIOMETRY ; EXTRACTION METHOD ; NUTRIENT LIMITATION ; COMMUNITY STRUCTURE ; CNP STOICHIOMETRY ; ENZYME-ACTIVITY ; NITROGEN ; DYNAMICS
WOS研究方向	Agriculture
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000541372500001
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
内容类型	期刊论文
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 Earth Environm CAS, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Inst Soil & Water Conservat CAS&MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Govt Newfoundland & Labrador, Agr Prod & Res Div, Dept Fisheries & Land Resources, Corner Brook, NF A2H 6J8, Canada 5.CAS Ctr Excellence Quaternary Sci & Global Change, 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.