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Dynamics of soil microbial C:N:P stoichiometry and its driving mechanisms following natural vegetation restoration after farmland abandonment

文献类型：期刊论文

作者Li, Jiwei2,3; Liu, Yulin1; Hai, Xuying1; Shangguan, Zhouping2,3; Deng, Lei2,3,4
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2019-11-25
卷号693页码:11
ISSN号0048-9697
关键词Ecological restoration Fungi and bacteria Homeostatic regulation Soil enzyme Soil microorganism Stoichiornetric ratios
DOI10.1016/j.scitotenv.2019.133613
通讯作者Deng, Lei(leideng@ms.iswc.ac.cn)
英文摘要Vegetation restoration after farmland abandonment has increased greatly and is commonly used to improve soil fertility and ecosystem service. Knowledge of soil community-level elemental homeostasis following natural vegetation restoration is specially limited for the abandoned farmlands. This study examined the changes in soil microbial biomass stoichiometry and homeostasis with a chronosequence of 3, 8, 13, 18, 23 and 30 years following natural vegetation restoration since farmland abandonment on the Loess Plateau, China. Vegetation communities, soil properties, microbial communities, and enzyme activities were analyzed to study the drivers on soil microbial C:N:P stoichiometry. The results showed that soil microbial biomass C: N ratios had little change following natural vegetation restoration since farmland abandonment, natural vegetation >23 years had significantly enhanced the microbial biomass C:P and N:P ratios by 26.1%-133.9% and 31.7%-67.4%, respectively. However, microbial biomass C:N, C:P and N:P ratios were constrained following natural vegetation restoration. Vegetation restoration for 30 years enhanced urease and alkaline phosphatase activities by 125.4% and 42.9%, respectively, which showed synchronous changes with N and P contents in microbial biomass. Soil fungi, urease and alkaline phosphatase were the drivers to the changes in microbial C:N:P stoichiometry. The results suggest that long-lean vegetation restoration (>23 years) will aggravate microbial P limitation, however, soil microorganism maintained the homeostatic regulation of stoichiometric ratios to mitigate P limitation. Fungi played a strong role in shaping microbial community-level elemental homeostasis and nutrient cycling through releasing N-converting and P-converting enzymes into soil following natural vegetation restoration. (C) 2019 Elsevier B.V. All rights reserved.
WOS关键词ARBUSCULAR MYCORRHIZAL FUNGI ; N-P STOICHIOMETRY ; LAND-USE CHANGES ; ENZYME-ACTIVITIES ; LOESS PLATEAU ; ECOENZYMATIC STOICHIOMETRY ; NUTRIENT LIMITATION ; EXTRACTION METHOD ; COMMUNITY COMPOSITION ; BACTERIAL COMMUNITY
资助项目National Natural Science Foundation of China[41730638] ; National Natural Science Foundation of China[41877538] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23070201] ; Funding of Special Support Plan of Young Talents Project of Shaanxi Province in China ; Funding of Promoting Plan to Creative Talents of Youth Science and Technology Star in Shaanxi Province of China[2018KJXX-088]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:000489694700031
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Funding of Special Support Plan of Young Talents Project of Shaanxi Province in China ; Funding of Promoting Plan to Creative Talents of Youth Science and Technology Star in Shaanxi Province of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/129763]  
专题中国科学院地理科学与资源研究所
通讯作者Deng, Lei
作者单位1.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, 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.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jiwei,Liu, Yulin,Hai, Xuying,et al. Dynamics of soil microbial C:N:P stoichiometry and its driving mechanisms following natural vegetation restoration after farmland abandonment[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,693:11.
APA Li, Jiwei,Liu, Yulin,Hai, Xuying,Shangguan, Zhouping,&Deng, Lei.(2019).Dynamics of soil microbial C:N:P stoichiometry and its driving mechanisms following natural vegetation restoration after farmland abandonment.SCIENCE OF THE TOTAL ENVIRONMENT,693,11.
MLA Li, Jiwei,et al."Dynamics of soil microbial C:N:P stoichiometry and its driving mechanisms following natural vegetation restoration after farmland abandonment".SCIENCE OF THE TOTAL ENVIRONMENT 693(2019):11.

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来源：地理科学与资源研究所

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