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DOI	10.1016/j.scitotenv.2021.145911
	Characteristics of dissolved organic carbon and nitrogen in precipitation in the northern Tibetan Plateau
	Gao, Tanguang; Kang, Shichang; Chen, Rensheng; Wang, Xiaoming; Yang, Junhua; Luo, Xi; Wang, Xiaoxiang; Paudyal, Rukumesh; Han, Chuntan; He, Ruixia; Sillanpaa, Mika; Zhang, Yulan
通讯作者	Zhang, YL (通讯作者)，Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
发表日期	2021
ISSN	0048-9697
EISSN	1879-1026
卷号	776
英文摘要	Dissolved organic carbon (DOC) and nitrogen (N) play essential roles in global C and N cycles. To address the possible role of DOC and N in precipitation and enrich the related global database, the characteristics of DOC and N in precipitation were investigated in a typical remote permafrost region (upper Heihe River Basin) of the northern Tibetan Plateau (TP) from February 2019 to March 2020. The results demonstrated that the average DOC and total dissolved N (TDN) concentrations in the precipitation were 1.41 +/- 1.09 mu g mL(-1) and 0.84 +/- 0.48 mu gmL(-1), respectively, with relatively lower concentrations in the summer. The annual DOC and TDN fluxes were estimated to be 6.42 kg ha(-1) yr(-1) and 3.39 kg ha(-1) yr(-1), respectively, indicating that precipitation was a significant factor in C and N deposition. The light-absorbing properties of precipitation DOC from the SUVA(254) and spectral slope revealed that precipitation DOC containing more aromatic components and lower molecular weights mostly was present during the summer; the mass cross-section (at the wavelength of 365 nm) ranged 0.26-1.84 m(2) g(-1), suggesting the potential impact of DOC on climatic forcing in the area. The principal component analysis combined with air mass backward trajectories indicated that the air masses from west Siberia, Central Asia, and northwestern China most significantly influenced the precipitation C and N in the study area. The WRF-Chem simulations and aerosol vertical distributions further illustrated the air mass transport pathways, demonstrating that dust and anthropogenic emissions could be transported over the studied area by westerlies and monsoonal winds. In the study basin, the precipitation deposition of DOC and N contributed largely to the riverine DOC and N exportation during the summer and had potential ecological effects. These results highlight the importance of DOC and N deposition from precipitation in the northern TP. (C) 2021 Elsevier B.V. All rights reserved.
关键词	BLACK CARBON OPTICAL-PROPERTIES RIVER-BASIN SNOW COVER ABSORPTION MATTER DEPOSITION ALPINE CHINA MOUNTAINS
英文关键词	Dissolved organic carbon; Nitrogen; Precipitation; Permafrost; Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000644326700014
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254626
作者单位	[Gao, Tanguang] Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China; [Kang, Shichang; Yang, Junhua; Zhang, Yulan] Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Kang, Shichang; Chen, Rensheng; Wang, Xiaoming; Luo, Xi; Wang, Xiaoxiang; Paudyal, Rukumesh; Han, Chuntan; Zhang, Yulan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou 730000, Peoples R China; [Luo, Xi] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [He, Ruixia] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Sillanpaa, Mika] Duy Tan Univ, Inst Res & Dev, Da Nang 550000, Vietnam; [Sillanpaa, Mika] Duy Tan Univ, Fac Environm & Chem Engn, Da Nang 550000, Vietnam; [Sillanpaa, Mika] Univ Southern Queensland, Fac Hlth Engn & Sci, Sch Civil Engn & Surveying, West St, Toowoomba, Qld 4350, Australia
推荐引用方式 GB/T 7714	Gao, Tanguang,Kang, Shichang,Chen, Rensheng,et al. Characteristics of dissolved organic carbon and nitrogen in precipitation in the northern Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,776.
APA	Gao, Tanguang.,Kang, Shichang.,Chen, Rensheng.,Wang, Xiaoming.,Yang, Junhua.,...&Zhang, Yulan.(2021).Characteristics of dissolved organic carbon and nitrogen in precipitation in the northern Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,776.
MLA	Gao, Tanguang,et al."Characteristics of dissolved organic carbon and nitrogen in precipitation in the northern Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 776(2021).