兰州大学机构库
The Spatial Distribution of Dissolved Organic Matter and Its Molecular Fingerprints in Seasonal Snow Over Northeastern China
Mu, Zhen1; Ma, Yuling1; Wen, Hanxuan1; Zhang, Chunyu1; Qi, Yulin1; Zhang, Daizhou2; Zhou, Yue3; Pu, Wei3; Wang, Xin1,3
2023-07-27
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES   Impact Factor & Quartile
ISSN2169-897X ; 2169-8996
EISSN2169-8996
Volume128Issue:14
page numbers16
AbstractDissolved organic matter in seasonal snow (DOMsnow) has a noticeable effect on the carbon cycle, carbon reserve, and ecosystems globally, but its regional characteristics remain unclear owing to a lack of surface measurements. The molecular compositions, potential sources, and degrees of oxidation of DOMsnow were investigated over northeastern China. The results of quantitative analysis for DOMsnow reflect the importance of anthropogenic influence. Fourier transform-ion cyclotron resonance-mass spectrometry analyses indicate that most (similar to 71%) identified molecular formulas are consistent with terrestrial compounds and derive from underlying soil and atmospheric deposition. Microbe-derived compounds are also important contributors (similar to 34%) to the DOMsnow pool. The heterogeneous distribution of DOMsnow molecules is a complex process caused by many kinds of factors. Sulfate ions, organic aerosols, longitude, and altitude explain 76.2% of the regional difference in organic components. High levels of oxidation DOMsnow molecules are found, and such high reactive molecules indicate the presence of secondary organic matter and aging processes within the snowpack. The objective of this study is to investigate the characteristics of DOMsnow in high-latitude regions of China so that we can further understand the impacts of changes in regional processes. Plain Language Summary Dissolved organic matter in seasonal snow (DOMsnow) has significantly influenced ecosystems in cryospheric regions globally. The purpose of this study was to investigate the molecular compositions, potential sources, and influence factors of DOMsnow in northeastern (NE) China. We found that DOMsnow content in NE China was significantly influenced by anthropogenic factors. Molecules from the terrestrial environment contributed significantly to DOMsnow through atmospheric deposition and snow-soil exchange. In addition, we identified a significant number of molecules with high oxidation, which are critical indicators of secondary organic products in snow. Sulfate ions, organic aerosols, longitude, and altitude may also play an important role in determining the regional heterogeneity of DOMsnow molecules. The proportion of DOMsnow compounds was not significantly different, but environmental differences could explain the difference in molecular weight.
KeywordDOMsnow molecules spatial distribution oxidation degree source
PublisherAMER GEOPHYSICAL UNION
DOI10.1029/2023JD039117
Indexed BySCIE
Language英语
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:001028764800001
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/569060
Collection兰州大学
Corresponding AuthorWang, Xin
Affiliation
1.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin, Peoples R China;
2.Prefectural Univ Kumamoto, Fac Environm & Symbiot Sci, Kumamoto, Japan;
3.Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou, Peoples R China
Recommended Citation
GB/T 7714
Mu, Zhen,Ma, Yuling,Wen, Hanxuan,et al. The Spatial Distribution of Dissolved Organic Matter and Its Molecular Fingerprints in Seasonal Snow Over Northeastern China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2023,128(14).
APA Mu, Zhen.,Ma, Yuling.,Wen, Hanxuan.,Zhang, Chunyu.,Qi, Yulin.,...&Wang, Xin.(2023).The Spatial Distribution of Dissolved Organic Matter and Its Molecular Fingerprints in Seasonal Snow Over Northeastern China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,128(14).
MLA Mu, Zhen,et al."The Spatial Distribution of Dissolved Organic Matter and Its Molecular Fingerprints in Seasonal Snow Over Northeastern China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 128.14(2023).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Altmetrics Score
Google Scholar
Similar articles in Google Scholar
[Mu, Zhen]'s Articles
[Ma, Yuling]'s Articles
[Wen, Hanxuan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Mu, Zhen]'s Articles
[Ma, Yuling]'s Articles
[Wen, Hanxuan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Mu, Zhen]'s Articles
[Ma, Yuling]'s Articles
[Wen, Hanxuan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
No comment.
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.