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dc.contributor.authorLin, Li
dc.contributor.authorZhu, Biao
dc.contributor.authorChen, Chengrong
dc.contributor.authorZhang, Zhenhua
dc.contributor.authorWang, Qi-Bing
dc.contributor.authorHe, Jin-Sheng
dc.date.accessioned2017-08-31T12:30:38Z
dc.date.available2017-08-31T12:30:38Z
dc.date.issued2016
dc.identifier.issn2045-2322
dc.identifier.doi10.1038/srep31438
dc.identifier.urihttp://hdl.handle.net/10072/100344
dc.description.abstractSoils in the alpine grassland store a large amount of nitrogen (N) due to slow decomposition. However, the decomposition could be affected by climate change, which has profound impacts on soil N cycling. We investigated the changes of soil total N and five labile N stocks in the topsoil, the subsoil and the entire soil profile in response to three years of experimental warming and altered precipitation in a Tibetan alpine grassland. We found that warming significantly increased soil nitrate N stock and decreased microbial biomass N (MBN) stock. Increased precipitation reduced nitrate N, dissolved organic N and amino acid N stocks, but increased MBN stock in the topsoil. No change in soil total N was detected under warming and altered precipitation regimes. Redundancy analysis further revealed that soil moisture (26.3%) overrode soil temperature (10.4%) in explaining the variations of soil N stocks across the treatments. Our results suggest that precipitation exerted stronger influence than warming on soil N pools in this mesic and high-elevation grassland ecosystem. This indicates that the projected rise in future precipitation may lead to a significant loss of dissolved soil N pools by stimulating the biogeochemical processes in this alpine grassland.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherNature Publishing Group
dc.relation.ispartofpagefrom31438-1
dc.relation.ispartofpageto31438-9
dc.relation.ispartofjournalScientific Reports
dc.relation.ispartofvolume6
dc.subject.fieldofresearchPhysical Sciences not elsewhere classified
dc.subject.fieldofresearchcode029999
dc.titlePrecipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
gro.hasfulltextFull Text
gro.griffith.authorChen, Chengrong


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