气候变化领域集成服务门户(CCPortal): Investigation of water-soluble organic constituents and their spatio-temporal heterogeneity over the Tibetan Plateau

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DOI	10.1016/j.envpol.2022.119093
	Investigation of water-soluble organic constituents and their spatio-temporal heterogeneity over the Tibetan Plateau
	Niu, Hewen; Lu, Xixi; Zhang, Guotao; Sarangi, Chandan
通讯作者	Niu, HW (通讯作者)，320 Donggang West Rd, Lanzhou, Gansu, Peoples R China.
发表日期	2022
ISSN	0269-7491
EISSN	1873-6424
卷号	302
英文摘要	Investigating the migration and transformation of carbonaceous and nitrogenous matter in the cryosphere areas is crucial for understanding global biogeochemical cycle and earth's climate system. However, water-soluble organic constituents and their transformation in multiple water bodies are barely investigated. Water-soluble organic carbon (WSOC) and organic nitrogen (WSON), and particulate black carbon (PBC) in multiple types of water bodies in eastern Tibetan Plateau (TP) cryosphere for the first time have been systematically investigated. Statistical results exhibited that from south to north and from east to west of this region, WSOC concentrations in alpine river runoff were gradually elevated. WSOC and nitrogenous matter in the alpine river runoff and precipitation in the glacier region presented distinct seasonal variations. WSON was the dominant component (63.4%) of water-soluble total nitrogen in precipitation over high-altitude southeastern TP cryosphere. Water-soluble carbonaceous matter dominated the carbon cycle in the TP cryosphere, but particulate carbonaceous matter in the alpine river runoff had a small fraction of the cryospheric carbon cycle. Analysis of optical properties illustrated that PBC had a much stronger light absorption ability (MAC-PBC: 2.28 +/- 0.37 m(2) g(-1)) than WSOC in the alpine river runoff (0.41 +/- 0.26 m(2) g(-1)). Ionic composition was dominated by SO42-, NO3-, and NH4+ (average: 45.13 +/- 3.75%) in the snow of glaciers, implying important contribution of (fossil fuel) combustion sources over this region. The results of this study have essential implications for understanding the carbon and nitrogen cycles in high altitude cryosphere regions of the world. Future work should be performed based on more robust in-situ observations and measurements from multiple environmental medium over the cryosphere areas, to ensure ecological protection and high-quality development of the high mountain Asia.
关键词	BLACK CARBON ELEMENTAL CARBON MINERAL DUST SNOW RIVER ICE AEROSOLS GLACIERS REGION OCEAN
英文关键词	Cryosphere; Chemical constituents; Tibetan plateau; Particulate black carbon
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000782593300004
来源期刊	ENVIRONMENTAL POLLUTION
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/254474
作者单位	[Niu, Hewen] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Lu, Xixi] Natl Univ Singapore, Dept Geog, 1 Arts Link, Singapore 117570, Singapore; [Zhang, Guotao] Inst Geog Sci & Nat Resources Res, Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; [Sarangi, Chandan] Indian Inst Technol, Dept Civil Engn, Chennai, India; [Sarangi, Chandan] Indian Inst Technol Madras, Lab Atmospher & Climate Sci, Chennai, India
推荐引用方式 GB/T 7714	Niu, Hewen,Lu, Xixi,Zhang, Guotao,et al. Investigation of water-soluble organic constituents and their spatio-temporal heterogeneity over the Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2022,302.
APA	Niu, Hewen,Lu, Xixi,Zhang, Guotao,&Sarangi, Chandan.(2022).Investigation of water-soluble organic constituents and their spatio-temporal heterogeneity over the Tibetan Plateau.ENVIRONMENTAL POLLUTION,302.
MLA	Niu, Hewen,et al."Investigation of water-soluble organic constituents and their spatio-temporal heterogeneity over the Tibetan Plateau".ENVIRONMENTAL POLLUTION 302(2022).