气候变化领域集成服务门户(CCPortal): Characterizing Dissolved Organic Matter and Other Water-Soluble Compounds in Ground Ice of the Russian Arctic: A Focus on Ground Ice Classification within the Carbon Cycle Context

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DOI	10.3390/geosciences14030077
	Characterizing Dissolved Organic Matter and Other Water-Soluble Compounds in Ground Ice of the Russian Arctic: A Focus on Ground Ice Classification within the Carbon Cycle Context
	Semenov, Petr; Pismeniuk, Anfisa; Kil, Anna; Shatrova, Elizaveta; Belova, Natalia; Gromov, Petr; Malyshev, Sergei; He, Wei; Lodochnikova, Anastasiia; Tarasevich, Ilya; Streletskaya, Irina; Leibman, Marina
发表日期	2024
EISSN	2076-3263
起始页码	14
结束页码	3
卷号	14 期号:3
英文摘要	Climate-induced changes contribute to the thawing of ice-rich permafrost in the Arctic, which leads to the release of large amounts of organic carbon into the atmosphere in the form of greenhouse gases, mainly carbon dioxide and methane. Ground ice constitutes a considerable volume of the cryogenically sequestered labile dissolved organic carbon (DOC) subjected to fast mineralization upon thawing. In this work, we collected a unique geochemical database of the ground and glacier ice comprising the samples from various geographic locations in the Russian Arctic characterized by a variety of key parameters, including ion composition, carbon-bearing gases (methane and carbon dioxide), bulk biogeochemical indicators, and fluorescent dissolved organic matter (DOM) fractions. Our results show that interaction with solid material-such as sediments, detritus, and vegetation-is likely the overriding process in enrichment of the ground ice in all the dissolved compounds. Terrigenous humic-like dissolved organic matter was predominant in all the analyzed ice samples except for glacier ice from Bolshevik Island (the Severnaya Zemlya archipelago) and pure (with low sediment content) tabular ground ice from western Yamal. The labile protein-like DOM showed no correlation to humic components and was probably linked to microbial abundance in the ground ice. The sum of the fluorophores deconvoluted by PARAFAC strongly correlates to DOC, which proves the potential of using this approach for differentiation of bulk DOC into fractions with various origins and biogeochemical behaviors. The pure tabular ground ice samples exhibit the highest rate of fresh easily degradable DOM in the bulk DOC, which may be responsible for the amplification of permafrost organic matter decomposition upon thawing.
英文关键词	ground ice; dissolved organic matter; excitation-emission matrix fluorimetry; biogeochemical cycling; greenhouse gas emission
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001193030200001
来源期刊	GEOSCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302500
作者单位	Lomonosov Moscow State University; Saint Petersburg State University; A.P. Karpinsky Russian Geological Research Institute (VSEGEI); China University of Geosciences; Russian Academy of Sciences; Tyumen Scientific Center of the Russian Academy of Sciences; Tyumen State University
推荐引用方式 GB/T 7714	Semenov, Petr,Pismeniuk, Anfisa,Kil, Anna,et al. Characterizing Dissolved Organic Matter and Other Water-Soluble Compounds in Ground Ice of the Russian Arctic: A Focus on Ground Ice Classification within the Carbon Cycle Context[J],2024,14(3).
APA	Semenov, Petr.,Pismeniuk, Anfisa.,Kil, Anna.,Shatrova, Elizaveta.,Belova, Natalia.,...&Leibman, Marina.(2024).Characterizing Dissolved Organic Matter and Other Water-Soluble Compounds in Ground Ice of the Russian Arctic: A Focus on Ground Ice Classification within the Carbon Cycle Context.GEOSCIENCES,14(3).
MLA	Semenov, Petr,et al."Characterizing Dissolved Organic Matter and Other Water-Soluble Compounds in Ground Ice of the Russian Arctic: A Focus on Ground Ice Classification within the Carbon Cycle Context".GEOSCIENCES 14.3(2024).