Methane fluxes in the foreland soil of Longxiazailongba Glacier on the Tibetan Plateau

DOI

Glacier foreland soil was always considered as methane sink. However, there is still a lack of methane dynamics in the foreland soil of mountain glaciers , which are flooded by meltwater in the melting season. In present study, methane fluxes in foreland hollow and hummock soils were measured in June (pre-melting season) and August (melting season) 2020, using polyvinylchloride cylindrical (PVC) tubes . In the pre-melting season, the methane flux was -3.76 ± 9.84 μg·m-2·h-1, and significantly increased to 13.95 ± 12.44 μg·m-2·h-1 in the glacier melting season. Methane flux variations were also observed in the microtopography. Methane flux was -8.29 ± 9.44 μg·m-2·h-1 in hollow soils in the pre-melting season, which was significantly higher than that in hummock soils (0.78 ± 7.97 μg·m-2·h-1). Conversely, methane flux in melting season was 14.27 ± 12.15 μg·m-2·h-1 in hollow soils, which was no longer significantly different form that in hummock soils (13.64 ± 12.71 μg·m-2·h-1).

Identifier
DOI https://doi.org/10.1594/PANGAEA.943375
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.943375
Provenance
Creator Xing, Tingting ORCID logo
Publisher PANGAEA
Publication Year 2022
Funding Reference Chinese Academy of Sciences https://doi.org/10.13039/501100002367 Crossref Funder ID 2019QZKK0503 Second Tibetan Plateau Scientific Expedition and Research (STEP) program; Chinese Academy of Sciences https://doi.org/10.13039/501100002367 Crossref Funder ID XDA20050101 Strategic Priority Research Program (A) of the Chinese Academy of Sciences; National Key Research and Development Program of China https://doi.org/10.13039/501100012166 Crossref Funder ID 2019YFC1509103 ; National Natural Science Foundation of China https://doi.org/10.13039/501100001809 Crossref Funder ID 41971077 ; National Natural Science Foundation of China https://doi.org/10.13039/501100001809 Crossref Funder ID 91851207
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 252 data points
Discipline Earth System Research
Spatial Coverage (92.010W, 33.100S, 92.011E, 33.103N)
Temporal Coverage Begin 2020-06-28T10:30:00Z
Temporal Coverage End 2020-08-30T13:00:00Z