Fungi regulate the response of the N2O production process to warming and grazing in a Tibetan grassland

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dc.citation.issue14
dc.citation.volume15
dc.contributor.authorZhong L
dc.contributor.authorWang S
dc.contributor.authorXu X
dc.contributor.authorWang Y
dc.contributor.authorRui Y
dc.contributor.authorZhou X
dc.contributor.authorShen Q
dc.contributor.authorWang J
dc.contributor.authorJiang L
dc.contributor.authorLuo C
dc.contributor.authorGu T
dc.contributor.authorMa W
dc.contributor.authorChen G
dc.contributor.editorKuzyakov Y
dc.date.accessioned2024-08-18T23:51:30Z
dc.date.available2024-08-18T23:51:30Z
dc.date.issued2018-07-20
dc.description.abstractLack of understanding of the effects of warming and winter grazing on soil fungal contribution to the nitrous oxide (N2O) production process has limited our ability to predict N2O fluxes under changes in climate and land use management, because soil fungi play an important role in driving terrestrial N cycling. A controlled warming and winter grazing experiment that included control (C), winter grazing (G), warming (W) and warming with winter grazing (WG) was conducted to investigate the effects of warming and winter grazing on soil N2O production potential in an alpine meadow on the Tibetan Plateau. Our results showed that soil bacteria and fungi contributed 46 ± 2% and 54 ± 2% to nitrification, and 37 ± 3% and 63 ± 3% to denitrification in the control treatment, respectively. We conclude that soil fungi could be the main source of N2O production potential for the Tibetan alpine grasslands. In our results, neither warming nor winter grazing affected the activity of enzymes responsible for overall nitrification and denitrification. However, warming significantly increased the enzyme activity of bacterial nitrification and potential of N2O production from denitrification to 53 ± 2% and 55 ± 3%, respectively, but decreased them to 47 ± 2% and 45 ± 3%, respectively. Winter grazing had no such effects. Warming and winter grazing may not affect the soil N2O production potential, but climate warming can alter biotic pathways responsible for N2O production process. These findings confirm the importance of soil fungi in the soil N2O production process and how they respond to environmental and land use changes in alpine meadow ecosystems. Therefore, our results provide some new insights into ecological controls on the N2O production process and contribute to the development of an ecosystem nitrogen cycle model.
dc.description.confidentialfalse
dc.format.pagination4447-4457
dc.identifier.citationZhong L, Wang S, Xu X, Wang Y, Rui Y, Zhou X, Shen Q, Wang J, Jiang L, Luo C, Gu T, Ma W, Chen G. (2018). Fungi regulate the response of the N2O production process to warming and grazing in a Tibetan grassland. Biogeosciences. 15. 14. (pp. 4447-4457).
dc.identifier.doi10.5194/bg-15-4447-2018
dc.identifier.eissn1726-4189
dc.identifier.elements-typejournal-article
dc.identifier.issn1726-4170
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/71332
dc.languageEnglish
dc.publisherCopernicus Publications on behalf of the European Geosciences Union
dc.publisher.urihttps://bg.copernicus.org/articles/15/4447/2018/
dc.relation.isPartOfBiogeosciences
dc.rights(c) 2018 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleFungi regulate the response of the N2O production process to warming and grazing in a Tibetan grassland
dc.typeJournal article
pubs.elements-id413383
pubs.organisational-groupOther
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