IB-CAS  > 植被与环境变化国家重点实验室
Nitrogen availability regulates topsoil carbon dynamics after permafrost thaw by altering microbial metabolic efficiency
Chen, Leiyi; Liu, Li1; Mao, Chao1; Qin, Shuqi1; Wang, Jun1; Liu, Futing1; Blagodatsky, Sergey2,3; Yang, Guibiao1; Zhang, Qiwen1; Zhang, Dianye1; Yu, Jianchun1; Yang, Yuanhe1
2018
Source PublicationNATURE COMMUNICATIONS
ISSN2041-1723
Volume9
AbstractInput of labile carbon may accelerate the decomposition of existing soil organic matter (priming effect), with the priming intensity depending on changes in soil nitrogen availability after permafrost thaw. However, experimental evidence for the linkage between the priming effect and post-thaw nitrogen availability is unavailable. Here we test the hypothesis that elevated nitrogen availability after permafrost collapse inhibits the priming effect by increasing microbial metabolic efficiency based on a combination of thermokarst-induced natural nitrogen gradient and nitrogen addition experiment. We find a negative correlation between the priming intensity and soil total dissolved nitrogen concentration along the thaw sequence. The negative effect is confirmed by the reduced priming effect after nitrogen addition. In contrast to the prevailing view, this nitrogen-regulated priming intensity is independent of extracellular enzyme activities but associated with microbial metabolic efficiency. These findings demonstrate that post-thaw nitrogen availability regulates topsoil carbon dynamics through its modification of microbial metabolic efficiency.
Subject AreaMultidisciplinary Sciences
DOI10.1038/s41467-018-06232-y
Indexed BySCI
Language英语
WOS KeywordORGANIC-MATTER DECOMPOSITION ; FUMIGATION-EXTRACTION METHOD ; TUSSOCK TUNDRA SOIL ; TIBETAN PLATEAU ; BIOMASS CALIBRATION ; COMMUNITY STRUCTURE ; CLIMATE-CHANGE ; ARCTIC TUNDRA ; FOREST SOILS ; STOICHIOMETRY
WOS IDWOS:000445819400002
PublisherNATURE PUBLISHING GROUP
SubtypeArticle
Publication PlaceLONDON
Funding OrganizationNational Key R&D Program of China [2017YFC0503903] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31770557, 31670482] ; Key Research Program of Frontier Sciences, CAS [QYZDB-SSW-SMC049] ; Youth Innovation Promotion Association of Chinese Academy of Science ; Chinese Academy of Sciences-Peking University Pioneer Cooperation Team
Corresponding Author Emailyhyang@ibcas.ac.cn
OAGreen Published, gold
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Cited Times:59[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/20362
Collection植被与环境变化国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Hohenheim, Inst Agr Sci Trop, Hans Ruthenberg Inst, D-70599 Stuttgart, Germany
4.Russian Acad Sci, Inst Physicochem & Biol Problems Soil Sci, Pushchino 142290, Russia
Recommended Citation
GB/T 7714
Chen, Leiyi,Liu, Li,Mao, Chao,et al. Nitrogen availability regulates topsoil carbon dynamics after permafrost thaw by altering microbial metabolic efficiency[J]. NATURE COMMUNICATIONS,2018,9.
APA Chen, Leiyi.,Liu, Li.,Mao, Chao.,Qin, Shuqi.,Wang, Jun.,...&Yang, Yuanhe.(2018).Nitrogen availability regulates topsoil carbon dynamics after permafrost thaw by altering microbial metabolic efficiency.NATURE COMMUNICATIONS,9.
MLA Chen, Leiyi,et al."Nitrogen availability regulates topsoil carbon dynamics after permafrost thaw by altering microbial metabolic efficiency".NATURE COMMUNICATIONS 9(2018).
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